CN102807390B - Porous sintering heat-insulating hollow block and manufacturing process thereof - Google Patents
Porous sintering heat-insulating hollow block and manufacturing process thereof Download PDFInfo
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- CN102807390B CN102807390B CN2012103056870A CN201210305687A CN102807390B CN 102807390 B CN102807390 B CN 102807390B CN 2012103056870 A CN2012103056870 A CN 2012103056870A CN 201210305687 A CN201210305687 A CN 201210305687A CN 102807390 B CN102807390 B CN 102807390B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a porous sintering heat-insulating hollow block and a manufacturing process thereof. According to the porous sintering heat-insulating hollow block, the void rate is 35 to 60 percent, the density is 700 to 1,000 kg/m<3>, and the coefficient of heat conductivity is less than or equal to 0.22 W/m.K. The porous sintering heat-insulating hollow block consists of the following ingredients in percentage by weight: 30 to 45 percent of solid waste, 45 to 55 percent of inorganic binder and 5 to 15 percent of micropore pore forming agent. The manufacturing process comprises the following steps of: 1, performing grain composition; 2, sieving for grading; 3, weighing raw materials; 4, mixing, homogenizing and aging; 5, extruding for forming; 6, cutting and stacking; 7, drying;and 8, sintering. The porous sintering heat-insulating hollow block is reasonable in design, convenient to realize, high in utilization rate of solid wastes, energy-saving, environment-friendly, highin void rate, low in density, high in thermal performance and strength, stable in size and difficult to crack, can be popularized and used in large areas, and has the excellent economic and social benefits.
Description
Technical field
The invention belongs to building material technical field, especially relate to a kind of porous sintered heat insulating hollow building block and preparation technology thereof.
Background technology
At present, China's existing building area has reached 42,000,000,000 m
2And keep approximately 2,000,000,000 m
2The tremendous growth speed in/year.Body of wall is the most important building enclosure of buildings, and materials for wall is that the main structure of buildings is built by laying bricks or stones and cladding.Materials for wall accounts for 70% of buildings material of main part, is the material of construction that ratio is maximum in the building enclosure, use is maximum.At present, China builds total commodity energy consumption and is about 8.7 hundred million tons of mark coals, accounts for nearly 1/3rd of social total energy consumption, public building approximately is 5-15 times of common residential architecture, heat consumption of building mainly imports into by heat transfer across wall or spreads out of, and accounts for 80%, and wherein exterior wall accounts for 23-24%.
The external wall heat insulation system that is consisted of by sintered heat insulating hollow building block of the prior art exist easily come off, the defectives such as the life-span is short, poor stability, difficult quality control, and the non-sintered hollow building blocks such as gas concrete, foamed concrete, then because autogenous shrinkage is large, easily cause the problems such as wall crazing, and can not large-arealy promote the use of.Therefore, novel sintered walling product requirement is to the future development with high thermal property, high strength, high hole rate, the high doping level of waste residue, waste utilization, energy and land saving.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, provides that a kind of utilization rate of solid waste is high, mechanical property good, the simple porous sintered heat insulating hollow building block of technique.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of porous sintered heat insulating hollow building block is characterized in that: the hole ratio of described porous sintered heat insulating hollow building block is 35%～60%, density is 700kg/m
3～1000kg/m
3, thermal conductivity is not more than 0.22W/mK, described porous sintered heat insulating hollow building block is grouped into by the one-tenth of following weight percent: solid waste 30%～45%, mineral binder bond 45%～55%, micropore pore-forming material 5%～15%, described solid waste is coal gangue, flyash, slag, metallurgical tailings, red mud, building waste, domestic refuse or municipal sludge, described mineral binder bond is shale, riverway sludge, dregs or loess, and described micropore pore-forming material is sawdust, rice husk, granular polystyrene, diatomite or lime.
Above-mentioned porous sintered heat insulating hollow building block, it is characterized in that: the length of described porous sintered heat insulating hollow building block be 365mm～490mm, width be 240mm～290mm, highly for 240mm～115mm, hole on the described porous sintered heat insulating hollow building block is evenly distributed slot, the length of described slot is 20mm～50mm, the width of described slot is 8mm～15mm, the thickness of the outer wall of described porous sintered heat insulating hollow building block is 12mm～20mm, and the thickness of the rib of described porous sintered heat insulating hollow building block is 3mm～10mm.
The present invention also provide a kind of reasonable in design, realize convenient, utilization rate of solid waste is high, the preparation technology of the porous sintered heat insulating hollow building block of energy-conserving and environment-protective, it is characterized in that this technique may further comprise the steps:
Step 1, grain composition: at first, the first material conveyor is delivered to jaw crusher with the solid waste in the feeding machine; Then, jaw crusher carries out the first time to solid waste to be pulverized, and the second material conveyor will be pulverized for the first time the solid waste that obtains and deliver to vertical mill; Then, vertical mill carries out the pulverizing second time to pulverizing for the first time the solid waste that obtains, and the 3 material transfer roller will be pulverized for the second time the solid waste that obtains and deliver to screening plant;
Simultaneously, it is stand-by that the fines that the 4 materials transfer roller obtains screening is delivered to the storage of the first raw material cabin, it is stand-by that the middle material that the 5th material conveyor obtains screening is delivered to the storage of the second raw material cabin, and it is stand-by that the coarse fodder that the 6th material conveyor obtains screening is delivered to the storage of the 3rd raw material cabin;
When the porous sintered heat insulating hollow building block of required preparation was non-bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 6～10: 15～25 in the described solid waste: 65～75;
When the porous sintered heat insulating hollow building block of required preparation was bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 0～5: 5～15 in the described solid waste: 80～90;
Step 7, drying: the base substrate that will cut into desired size by drying cart is sent into the body drying chamber of frame bent structure and is carried out drying;
Step 8, roasting: the base substrate that drying is good is pulled out and is headed in the tunnel furnace by drying cart, through tunnel furnace base substrate is fired to be finished product.
Above-mentioned technique, it is characterized in that: synchronous mud bar cutting machine comprises frame described in the step 6, be equipped with on the described frame velocity sensor that the extruded velocity to the mud bar detects, with the mud bar transfer mechanism of the extruded velocity synchronous transport mud bar of mud bar and with the mud bar cutting mechanism of the extruded velocity synchronous cutting mud bar of mud bar, and be used for cutting automatic control system that mud bar transfer mechanism and mud bar cutting mechanism are controlled; Described mud bar transfer mechanism comprises mud bar conveying motor, the Belt Conveying assembly that the mud bar of carrying motor to join with the mud bar is carried step-down gear and carried step-down gear to join with the mud bar, described Belt Conveying assembly is made of a plurality of belt pulleys and two belts, a plurality of described belt pulleys are respectively the first belt pulley of carrying step-down gear to join with described mud bar, be erected at the second belt pulley of described frame top by the bracing frame that is arranged on described frame top, be horizontally disposed with and be erected at the 3rd belt pulley of described frame top with described the second belt pulley, be positioned at tiltedly below and be fixedly connected on the 4th belt pulley on the described frame of described the 3rd belt pulley, be positioned at tiltedly below and be fixedly connected on the 5th belt pulley on the described frame and be positioned at the oblique upper of described the 5th belt pulley and be positioned at tiltedly the 6th belt pulley of below of described the second belt pulley of described the 4th belt pulley, two described belts be respectively around be connected on described the first belt pulley and the second belt pulley the first belt and around being connected to described the second belt pulley, the 3rd belt pulley, the 4th belt pulley, the second belt on the 5th belt pulley and the 6th belt pulley; Described mud bar cutting mechanism comprises and is four root posts that square is laid in described frame top, the cutting knife that is installed on the column and can slides up and down along the chute that is arranged on the column and the wire frame that is fixedly connected on described cutting knife top and can moves up and down with cutting knife by vertical beam, and be used for driving the mud bar cutting motor that described cutting knife slides up and down at column and the mud bar cutting speed reducer that joins with mud bar cutting motor, the frame top that is positioned at the space that four described columns surround is provided with the cutting bed for the cutting of mud bar, be fixedly connected with four described columns around the described cutting bed, the bottom of described cutting bed is provided with the slide block that slides on described frame top, be connected with the many cutting steel wires that are used for cutting mud bar on the described wire frame, the output shaft of described mud bar cutting speed reducer is connected with cutting knife with described frame by connecting rod assembly; Described velocity sensor, mud bar carry motor and mud bar cutting motor all to join with described cutting automatic control system.
Above-mentioned technique, it is characterized in that: be provided with end face on the described frame mutually concordant with described cutting bed and be used for the mud bar carriage of carrying mud bar, the top of four described columns all is connected with crossbeam between any two, be provided with on the described wire frame be used to the steel wire hanging ring that hangs described cutting steel wire, the quantity of described cutting knife is two and is respectively front cutting knife and rear cutting knife, described front cutting knife and rear cutting knife symmetry are installed on the described column, be connected with couple axle on the output shaft of described mud bar cutting speed reducer, described couple axle is connected on the described frame by bearing, the quantity of described connecting rod assembly is two groups and is respectively the front rod assembly and the back link assembly, described front rod assembly comprises the first connecting rod that is rotatably connected on the described mud bar cutting speed reducer output shaft and second connecting rod and the third connecting rod that is rotationally connected with described first connecting rod, described second connecting rod is rotatably connected on the described frame, and described third connecting rod is rotatably connected on the described front cutting knife; Described back link assembly comprises the 4th connecting rod that is rotatably connected on the described couple axle and the 5th connecting rod and the 6th connecting rod that is rotationally connected with described the 4th connecting rod, described the 4th connecting rod and described first connecting rod are symmetrical arranged, described the 5th connecting rod is rotatably connected on the described frame and with described second connecting rod and is symmetrical arranged, and described the 6th connecting rod is rotatably connected on the described rear cutting knife and with described third connecting rod and is symmetrical arranged.
Above-mentioned technique, it is characterized in that: described cutting automatic control system comprises controller module, the human-computer interaction module that joins with controller module and be the power module of each electricity consumption module for power supply in the system, the input terminus of described controller module is connected to for the signal to velocity sensor output and amplifies, the signal conditioning circuit module of filtering and A/D conversion process, the output terminal of described controller module is connected to the first motor driver module and the second motor driver module, described velocity sensor and described signal conditioning circuit module are joined, described mud bar carries motor and described the first motor driver module to join, and described mud bar cutting motor and described the second motor driver module are joined.
Above-mentioned technique, it is characterized in that: the body drying chamber of the bent structure of frame described in the step 7 comprises the kiln main body, kiln supply air system and kiln automatic control system, described kiln main body comprises the building enclosure of cube structure and is arranged on the kiln top board on building enclosure top, be horizontally arranged with the across bulkhead that multiple tracks is used for the building enclosure internal space is separated into a plurality of dry sections in the described building enclosure, be vertically arranged with multiple row in the described building enclosure for the rotation blower to base substrate intermittent blowing to be dried, passage between the adjacent two row rotations blowers has consisted of the dry track that drying cart that a confession is equipped with base substrate to be dried passes through, and the building enclosure two ends of aiming at described dry track are symmetrically arranged with into Che Duanmen and go out car end door; Described kiln supply air system comprise be laid in kiln top board top and respectively corresponding in a plurality of dry sections many hot blasts of heat air delivery carry subtubes, many hot blast carries subtube to connect as one by a hot blast delivery manifold road, near being provided with exhausting moisture pipeline and hot air circulation pipeline on the described hot blast delivery manifold road that advances car end door, send calorifier near being connected with by the fan connecting tube road on the described hot blast delivery manifold road that goes out car end door, be connected with moisture-eliminating blower on the described exhausting moisture pipeline, be connected with hot air circulation blower on the described hot air circulation pipeline, described exhausting moisture pipeline, be provided with burner on hot air circulation pipeline and the fan connecting tube road, every described hot blast is carried on the subtube and is provided with a plurality of air outlets that pass described kiln top board, is provided with a plurality of suction openings that pass described kiln top board on the described exhausting moisture pipeline He on the hot air circulation pipeline; Described kiln automatic control system comprises main controller module and joins with main controller module and be used for the touch-screen of man-machine interaction, the input terminus of described main controller module is connected to a plurality of temperature sensors that are laid in each dry section and are used for the temperature in each dry section is detected and a plurality of humidity sensor that is laid in each dry section and is used for the humidity in each dry section is detected, the output terminal of described main controller module is connected to for to sending calorifier to carry out the first frequency transformer of variable frequency control, be used for moisture-eliminating blower is carried out the second frequency transformer of variable frequency control, be used for hot air circulation blower is carried out the 3rd frequency transformer of variable frequency control, a plurality of air-supply motor-driven control valves that are laid in each air outlet place and are used for air output is regulated and a plurality of exhausting motor-driven control valve that is laid in each suction opening place and is used for the exhausting amount is regulated, described calorifier and described the first frequency transformer of sending joins, described moisture-eliminating blower and described the second frequency transformer join, described hot air circulation blower and described the 3rd frequency transformer join, and the output terminal of described burner and described main controller module joins.
Above-mentioned technique is characterized in that: described building enclosure is the brick mixed building body, and the height of described building enclosure is 4.5m～6.5m; The quantity of described across bulkhead is five roads, the quantity of corresponding described dry section is six and is respectively the first dry section, the second dry section, the 3rd dry section, the 4th dry section, the 5th dry section and the 6th dry section along the described Che Duanmen of advancing to the direction that goes out car end door, and it is six that described hot blast is carried the quantity of subtube; Be vertically arranged with six row in the described building enclosure for the rotation blower to base substrate intermittent blowing to be dried, the quantity in corresponding described dry track is five, and the described Che Duanmen of advancing is five with the quantity that goes out car end door; The quantity of described exhausting moisture pipeline is that one and a plurality of suction openings of being arranged on the described exhausting moisture pipeline are positioned at the described first dry section, and the quantity of described hot air circulation pipeline is that one and a plurality of suction openings of being arranged on the described hot air circulation pipeline are positioned at the described second dry section; The quantity in described fan connecting tube road is two, and corresponding described to send the quantity of calorifier be two, and the quantity of described the first frequency transformer is two; Every described hot blast is carried on the subtube and is provided with three air outlets, be provided with three suction openings on the described exhausting moisture pipeline He on the hot air circulation pipeline, each described air outlet place and each described suction opening place are laid with a temperature sensor, a humidity sensor, a pressure transmitter and a under meter.
Above-mentioned technique is characterized in that: described kiln automatic control system comprises the upper monitoring computer that joins with described main controller module and the printer that joins with described upper monitoring computer; The input terminus of described main controller module is connected to a plurality of pressure transmitters that are laid in each dry section and are used for the air pressure in each dry section is detected and a plurality of under meter that is laid in each dry section and is used for the air flow quantity in each dry section is detected; Described rotation blower comprises the taper air duct and is arranged on taper air duct top and is used for driving the air barrel motor that the taper air duct rotates, the top of described taper air duct is provided with for the fence type blast inlet that sucks hot blast to the taper air duct, the output shaft end of described motor extend in the taper air duct and is connected be used to the wind feeding blades that presses down hot blast, be provided with air outlet along straight line from top to bottom on the sidewall of described taper air duct, described air outlet place is connected with the adjustable plate that polylith is used for regulating air output; The output terminal of described main controller module is connected to for the 4th frequency transformer that air barrel motor is carried out variable frequency control, and described air barrel motor and described the 4th frequency transformer join.
The present invention compared with prior art has the following advantages:
1, the present invention utilizes solid waste to prepare porous sintered heat insulating hollow building block, economizes on resources, and is beneficial to environmental protection, has good social benefit.
2, preparation technology of the present invention is simple, and is reasonable in design, and it is convenient to realize.
3, the present invention has created the twice disintegrating process technology of jaw crushing in conjunction with Vertical Mill, and has created the mixing homogenization system of biaxial rneader in conjunction with the disk sieve type feeding machine.
4, thermal property of the present invention can reach the energy-saving design standard of building energy conservation 65%, retaining wall than the external-wall external-insulation energy-saving heat insulation system have safety, fire prevention, with buildings with the sintered heat insulating hollow building block of the distinguishing features such as life-span, it reaches 50%～70% for multipurpose use of solid waste, produces fractional energy savings and reaches 47.61%.
5, adopted synchronous mud bar cutting machine among the preparation technology of the present invention, can automatically realize the synchronous cutting of mud bar, need not to re-use slitting shear machine, can directly the mud bar synchronous cutting of extrusion shaping machine moulding be become the building block base of scale length, production unit takes up room little, reduced operator's labour intensity, improved the formation efficiency of sintered heat insulating hollow building block, can guarantee that cutting steel wire can cut out straight building block base vertically downward, and, by adjusting many spacings between the cutting steel wire, just can cut out actual required building block base size, cut lengths are stable, greatly improved thus the Forming Quality of building block base.
6, be provided with a plurality of dry tracks in the building enclosure of cube structure in the body drying chamber of frame bent structure of the present invention, and a plurality of dry sections have been separated into by across bulkhead, consisted of the kiln main body of frame bent structure, novel structure, reasonable in design, each dry section has relatively independent space medium, temperature, humidity and flow velocity, can adapt to the corresponding requirements of base substrate different steps moisture evaporation to be dried.
7, in advancing the first dry section that the car end begins, kiln is provided with exhausting moisture pipeline in the body drying chamber of frame bent structure of the present invention, in advancing the second dry section that the car end begins, kiln is provided with the hot air circulation pipeline, utilize that highly humid air in the first dry section and the second dry section is counter to send each dryer section in the rear end, help to regulate the temperature and humidity in each dryer section of rear end, prevent that base substrate internal moisture translational speed to be dried from cracking less than the surface-moisture velocity of evaporation.
8, will send calorifier to be connected near on the described hot blast delivery manifold road that goes out car end door by the fan connecting tube road in the body drying chamber of frame bent structure of the present invention, a large amount of hot blasts is sent in the several dry section that kiln goes out the car end, can rapidly base substrate moisture to be dried be reduced to design objective, help to improve drying efficiency.
9, the hot blast in the body drying chamber of frame bent structure of the present invention is sent into kiln indirectly through the rotation blower, realized the air-supply at intermittence to base substrate to be dried, can leave time enough to external migration for base substrate internal moisture to be dried at the blowing interval, impel the moisture evaporation to reach balance.
10, be vertically arranged with multiple row in the building enclosure of the body drying chamber of frame bent structure of the present invention for the rotation blower to base substrate intermittent blowing to be dried, can make that the γ-ray emission vertical circulation flows in the kiln, prevent that kiln from air stratification occurring and affecting the quality of dry base substrate.
11, the kiln automatic control system in the body drying chamber of frame bent structure of the present invention can make kiln reasonably move in temperature, the humidity environment always, both can avoid because the appearance that temperature, the unreasonable adobe crackle that causes of humidity or adobe do not parch phenomenon, can send by change again the output rating of calorifier, moisture-eliminating blower and hot air circulation blower, reach energy-saving and cost-reducing purpose.
12, the present invention is provided with the kiln automatic control system, both can be on-the-spot by touch screen operation and observe running status, also can be long-range by the upper monitoring computer operation and observe running status, can also print the form that it needs by printer as required, intelligent degree is high, operates easy to use.
13, the present invention advances hot blast, hydrofuge is even, has a narrow range of temperature in the kiln, does not have thermal shocking, has realized evenly, dry stably, can guarantee well the quality of production of porous sintered heat insulating hollow building block.
14, the prepared porous sintered heat insulating hollow building block of the present invention, hole ratio are 35%～60%, microporosity is 5%～15%, density is 700kg/m
3～1000kg/m
3, thermal conductivity is not more than 0.22W/mK, length is that 365mm～490mm, width are 240mm～290mm, highly are 240mm～115mm, thermal property is high, intensity is high, hole ratio is high, can promote the use of in large area, has good economic benefit and social benefit.
In sum, the present invention is reasonable in design, and it is convenient to realize, utilization rate of solid waste is high, energy-conserving and environment-protective, and the hole ratio of sintered heat insulating hollow building block is high, and density is little, and thermal property is high, and intensity is high, and dimensional stabilizing is difficult for cracking, and can use by spread.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the porous sintered heat insulating hollow building block preparation technology's of the present invention process flow diagram.
Fig. 2 is the structured flowchart of the used generation equipment of the porous sintered heat insulating hollow building block preparation technology of the present invention.
Fig. 3 is the main body figure of the synchronous mud bar of the present invention cutting machine except cutting automatic control system.
Fig. 4 is the right view of Fig. 3.
Fig. 5 is the annexation schematic diagram of cutting automatic control system of the present invention and other each parts.
Fig. 6 is the structural representation of the porous sintered heat insulating hollow building block of the present invention.
Fig. 7 is the schematic cross-sectional view of kiln main body of the present invention.
Fig. 8 is the longitudinal section schematic diagram of kiln main body of the present invention.
Fig. 9 is the structural representation of kiln supply air system of the present invention.
Figure 10 is air outlet of the present invention and the laying schematic diagram of suction opening in each dry section.
Figure 11 is the schematic block circuit diagram of kiln automatic control system of the present invention.
Figure 12 is the structural representation that the present invention rotates blower.
Figure 13 is the right view of Figure 12.
Description of reference numerals:
1-building enclosure; The dry section of 1-1-first; The dry section of 1-2-second;
The dry section of 1-3-the 3rd; The dry section of 1-4-the 4th; The dry section of 1-5-the 5th;
The dry section of 1-6-the 6th; 2-kiln top board; 3-across bulkhead;
4-rotation blower; 4-1-taper air duct; 4-2-air barrel motor;
4-3-fence type blast inlet; 4-4-wind feeding blades; 4-5-air outlet;
4-6-adjustable plate; 5-drying cart; 6-advance car end door;
7-go out car end door; 8-base substrate to be dried; 9-hot blast is carried subtube;
10-hot blast delivery manifold road; 11-exhausting moisture pipeline; 12-hot air circulation pipeline;
13-fan connecting tube road; 14-send calorifier; 15-moisture-eliminating blower;
16-hot air circulation blower; 17-burner; 18-air outlet;
19-suction opening; 20-main controller module; 21-touch-screen;
The 22-temperature sensor; The 23-humidity sensor; 24-the first frequency transformer;
The 25-the second frequency transformer; The 26-the three frequency transformer; 27-air-supply motor-driven control valve;
28-exhausting motor-driven control valve; The 29-pressure transmitter; The 30-under meter;
31-upper monitoring computer; 32-printer; The 33-the four frequency transformer;
The 34-feeding machine; 35-the first material conveyor; The 36-jaw crusher;
37-the second material conveyor; The 38-vertical mill; 39-3 material transfer roller;
The 40-screening plant; 41-feed back transfer roller; 42-4 materials transfer roller;
43-the 5th material conveyor; 44-the 6th material conveyor; 45-the first raw material cabin;
46-the second raw material cabin; 47-the 3rd raw material cabin; 48-the first rubber conveyer;
49-biaxial rneader; The 50-the second rubber conveyer; 51-ageing storehouse;
The 52-the three rubber conveyer; 53-disk sieve type feeding machine; The 54-the seven material conveyor;
55-extrusion shaping machine; 56-synchronously mud bar cutting machines; 57-mechanical manipulator setting machine;
58-drying cart; The body drying chamber of 59-frame bent structure;
60-tunnel furnace; 61-frame; 61-1-bracing frame;
62-velocity sensor; 63-1-mud bar is carried motor;
63-2-mud bar is carried step-down gear; 63-3-first belt pulley;
63-4-second belt pulley; 63-5-the 3rd belt pulley; 63-6-the 4th belt pulley;
63-7-the 5th belt pulley; 63-8-first belt; 63-9-second belt;
63-10-the 6th belt pulley; 64-1-column; 64-2-front cutting knife;
64-3-rear cutting knife; 64-4-wire frame; 64-5-mud bar cutting motor;
64-6-mud bar cutting speed reducer; 64-7-cutting bed; 64-8-cutting steel wire;
64-9-first connecting rod; 64-10-second connecting rod; 64-11-third connecting rod;
64-12-vertical beam; 64-13-couple axle; 64-14-bearing;
64-15-the 4th connecting rod; 64-16-the 5th connecting rod; 64-17-the 6th connecting rod;
64-18-crossbeam; 64-19-steel wire hanging ring; 64-20-chute;
64-21-slide block; 65-1-controller module; 65-2-power module;
65-3-human-computer interaction module; 65-4-first motor driver module;
65-5-second motor driver module; 65-6-signal conditioning circuit module;
66-mud bar carriage; 67-mud bar; 68-porous sintered heat insulating hollow building block;
68-1-slot; 68-2-outer wall; 68-3-rib;
68-4-handgrip hole; 68-5-breather hole.
Embodiment
Embodiment 1
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 30%, mineral binder bond 55%, micropore pore-forming material 15%; Described solid waste is coal gangue, and described mineral binder bond is shale (granularity is less than 0.5mm), and described micropore pore-forming material is sawdust.
As depicted in figs. 1 and 2, the preparation technology of the present embodiment may further comprise the steps:
Step 1, grain composition: at first, the first material conveyor 35 is delivered to jaw crusher 36 with the solid waste in the feeding machine 34; Then, 36 pairs of solid waste of jaw crusher are carried out the pulverizing first time, and the second material conveyor 37 will be pulverized for the first time the solid waste that obtains and deliver to vertical mill 38; Then, 38 pairs of vertical mills are pulverized for the first time the solid waste that obtains and are carried out the pulverizing second time, and 3 material transfer roller 39 will be pulverized for the second time the solid waste that obtains and deliver to screening plant 40;
Simultaneously, it is stand-by that the fines that 4 materials transfer roller 42 obtains screening is delivered to 45 storages of the first raw material cabin, it is stand-by that the middle material that the 5th material conveyor 43 obtains screening is delivered to 46 storages of the second raw material cabin, and it is stand-by that the coarse fodder that the 6th material conveyor 44 obtains screening is delivered to 47 storages of the 3rd raw material cabin;
When the porous sintered heat insulating hollow building block 68 of required preparation was non-bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 6: 25: 65 in the described solid waste;
When the porous sintered heat insulating hollow building block 68 of required preparation was bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 0: 13: 90 in the described solid waste;
Step 7, drying: the base substrate that will cut into desired size by drying cart 58 is sent into the body drying chamber 59 of frame bent structure and is carried out drying;
Step 8, roasting: the base substrate that drying is good is pulled out and is headed in the tunnel furnace 60 by drying cart 58, through tunnel furnace 60 base substrate is fired to be finished product.
In conjunction with Fig. 3 and Fig. 4, in the present embodiment, synchronous mud bar cutting machine 56 comprises frame 61 described in the step 6, be equipped with on the described frame 61 velocity sensor 62 that the extruded velocity to mud bar 67 detects, with the mud bar transfer mechanism of the extruded velocity synchronous transport mud bar 67 of mud bar 67 and with the mud bar cutting mechanism of the extruded velocity synchronous cutting mud bar 67 of mud bar 67, and be used for cutting automatic control system that mud bar transfer mechanism and mud bar cutting mechanism are controlled; Described mud bar transfer mechanism comprises mud bar conveying motor 63-1, the Belt Conveying assembly that the mud bar of carrying motor 63-1 to join with the mud bar is carried step-down gear 63-2 and carried step-down gear 63-2 to join with the mud bar, described Belt Conveying assembly is made of a plurality of belt pulleys and two belts, a plurality of described belt pulleys are respectively the first belt pulley 63-3 that carries step-down gear 63-2 to join with described mud bar, be erected at the second belt pulley 63-4 of described frame 61 tops by the bracing frame 61-1 that is arranged on described frame 61 tops, be horizontally disposed with and be erected at the 3rd belt pulley 63-5 of described frame 61 tops with described the second belt pulley 63-4, be positioned at tiltedly below and be fixedly connected on the 4th belt pulley 63-6 on the described frame 61 of described the 3rd belt pulley 63-5, be positioned at tiltedly below and be fixedly connected on the 5th belt pulley 63-7 on the described frame 61 and be positioned at the oblique upper of described the 5th belt pulley 63-7 and be positioned at tiltedly the 6th belt pulley 63-10 of below of described the second belt pulley 63-4 of described the 4th belt pulley 63-6, two described belts be respectively around be connected on described the first belt pulley 63-3 and the second belt pulley 63-4 the first belt 63-8 and around being connected to described the second belt pulley 63-4, the 3rd belt pulley 63-5, the 4th belt pulley 63-6, the second belt 63-9 on the 5th belt pulley 63-7 and the 6th belt pulley 63-10; Described mud bar cutting mechanism comprises and is the four root post 64-1 that square is laid in described frame 61 tops, the wire frame 64-4 that is installed in the upper and cutting knife that can slide up and down along the chute 64-20 that is arranged on the column 64-1 of column 64-1 and is fixedly connected on described cutting knife top and can moves up and down with cutting knife by vertical beam 64-12, and be used for driving the mud bar cutting motor 64-5 that described cutting knife slides up and down at column 64-1 and the mud bar cutting speed reducer 64-6 that joins with mud bar cutting motor 64-5, frame 61 tops that are positioned at the space that four described column 64-1 surround are provided with the cutting bed 64-7 for the cutting of mud bar, be fixedly connected with four described column 64-1 around the described cutting bed 64-7, the bottom of described cutting bed 64-7 is provided with the slide block 64-21 that slides on described frame 61 tops, be connected with the many cutting steel wire 64-8 that are used for cutting mud bar 67 on the described wire frame 64-4, the output shaft of described mud bar cutting speed reducer 64-6 is connected with cutting knife with described frame 61 by connecting rod assembly; Described velocity sensor 62, mud bar carry motor 63-1 and mud bar cutting motor 64-5 all to join with described cutting automatic control system.
In conjunction with Fig. 3 and Fig. 4, in the present embodiment, be provided with end face on the described frame 61 mutually concordant with described cutting bed 64-7 and be used for the mud bar carriage 66 of carrying mud bar 67, the top of four described column 64-1 all is connected with crossbeam 64-18 between any two, be provided with on the described wire frame 64-4 be used to the steel wire hanging ring 64-19 that hangs described cutting steel wire 64-8, the quantity of described cutting knife is two and is respectively front cutting knife 64-2 and rear cutting knife 64-3, described front cutting knife 64-2 and rear cutting knife 64-3 symmetry are installed on the described column 64-1, be connected with couple axle 64-13 on the output shaft of described mud bar cutting speed reducer 64-6, described couple axle 64-13 is connected on the described frame 61 by bearing 64-14, the quantity of described connecting rod assembly is two groups and is respectively the front rod assembly and the back link assembly, described front rod assembly comprises the first connecting rod 64-9 that is rotatably connected on the described mud bar cutting speed reducer 64-6 output shaft and second connecting rod 64-10 and the third connecting rod 64-11 that is rotationally connected with described first connecting rod 64-9, described second connecting rod 64-10 is rotatably connected on the described frame 61, and described third connecting rod 64-11 is rotatably connected on the described front cutting knife 64-2; Described back link assembly comprises the 4th connecting rod 64-15 that is rotatably connected on the described couple axle 64-13 and the 5th connecting rod 64-16 and the 6th connecting rod 64-17 that is rotationally connected with described the 4th connecting rod 64-15, described the 4th connecting rod 64-15 and described first connecting rod 64-9 are symmetrical arranged, described the 5th connecting rod 64-16 is rotatably connected on the described frame 61 and with described second connecting rod 64-10 and is symmetrical arranged, and described the 6th connecting rod 64-17 is rotatably connected on described rear cutting knife 64-3 and upward and with described third connecting rod 64-11 is symmetrical arranged.
In conjunction with Fig. 5, in the present embodiment, described cutting automatic control system comprises controller module 65-1, the human-computer interaction module 65-3 that joins with controller module 65-1 and be the power module 65-2 of each electricity consumption module for power supply in the system, the input terminus of described controller module 65-1 is connected to for the signal to velocity sensor 62 outputs and amplifies, the signal conditioning circuit module 65-6 of filtering and A/D conversion process, the output terminal of described controller module 65-1 is connected to the first motor driver module 65-4 and the second motor driver module 65-5, described velocity sensor 62 joins with described signal conditioning circuit module 65-6, described mud bar carries motor 63-1 and described the first motor driver module 65-4 to join, and described mud bar cutting motor 64-5 and described the second motor driver module 65-5 join.
During implementation, after operation human-computer interaction module 65-3 unlatching automatic control system, the extruded velocity of velocity sensor 62 Real-time Collection mud bars 67 is also exported to signal conditioning circuit module 65-6 with detected signal, signal conditioning circuit module 65-6 amplifies the signal of velocity sensor 62 outputs, export to controller module 65-1 after filtering and the A/D conversion process, controller module 65-1 carries out analyzing and processing to its signal that receives, obtain the extruded velocity of mud bar 67 and obtain the mud bar is carried the control signal of motor 63-1 and mud bar cutting motor 64-5, the rotation that controller module 65-1 carries motor 63-1 by the first motor driver module 65-4 control mud bar, the mud bar is carried motor 63-1 to carry step-down gear 63-2 to drive the first belt pulley 63-3 by the mud bar and is rotated, the first belt pulley 63-3 drives the first belt 63-8 transmission, the first belt 63-8 drives the second belt pulley 63-4 and rotates, and then so that the extruded velocity synchronous transport mud bar 67 of the second belt 63-9 and mud bar 67; Simultaneously, controller module 65-1 is by the rotation of the second motor driver module 65-5 control mud bar cutting motor 64-5, mud bar cutting motor 64-5 drives front rod assembly and couple axle 64-13 action by mud bar cutting speed reducer 64-6, couple axle 64-13 drives the action of back link assembly again, and then cutting knife 64-2 moves downward forward before the described third connecting rod 64-11 promotion, cutting knife 64-3 moved downward forward after described the 6th connecting rod 64-17 and third connecting rod 64-11 promoted synchronously, front cutting knife 64-2 and rear cutting knife 64-3 drive four root post 64-1 and travel forward, and then drive cutting bed 64-7 slides on described frame 1 top by slide block 64-21, namely so that described mud bar cutting mechanism integral body travel forward again, and so that the speed that travels forward of described mud bar cutting mechanism and described mud bar 67 keep synchronous, in the process of being synchronized with the movement, cutting knife 64-3 drives wire frame 64-4 and cutting steel wire 64-8 moves downward, cutting steel wire 64-8 cuts mud bar 67 downwards, and mud bar 67 is cut into the long building block base of scale.After cutting was finished, described controller module 65-1 control mud bar cutting motor 64-5 counter-rotating so that each parts in the mud bar cutting mechanism are got back to the front initial position of cutting, prepared to carry out the cutting of next mud bar 67.So periodically repeat, guarantee the continuous synchronization excision forming to mud bar 67.
In conjunction with Fig. 7～Figure 11, in the present embodiment, the body drying chamber 59 of the bent structure of frame described in the step 7 comprises the kiln main body, kiln supply air system and kiln automatic control system, described kiln main body comprises the building enclosure 1 of cube structure and is arranged on the kiln top board 2 on building enclosure 1 top, be horizontally arranged with the across bulkhead 3 that multiple tracks is used for building enclosure 1 internal space is separated into a plurality of dry sections in the described building enclosure 1, be vertically arranged with multiple row in the described building enclosure 1 for the rotation blower 4 to base substrate 8 intermittent blowings to be dried, passage between the adjacent two row rotations blowers 4 has consisted of the dry track that drying cart 5 that a confession is equipped with base substrate 8 to be dried passes through, and building enclosure 1 two ends of aiming at described dry track are symmetrically arranged with into car end door 6 and go out car end door 7; Described kiln supply air system comprise be laid in kiln top board 2 tops and respectively corresponding in a plurality of dry sections many hot blasts of heat air delivery carry subtubes 9, many hot blast carries subtube 9 to connect as one by a hot blast delivery manifold road 10, near being provided with exhausting moisture pipeline 11 and hot air circulation pipeline 12 on the described hot blast delivery manifold road 10 that advances car end door 6, send calorifier 14 near being connected with by fan connecting tube road 13 on the described hot blast delivery manifold road 10 that goes out car end door 7, be connected with moisture-eliminating blower 15 on the described exhausting moisture pipeline 11, be connected with hot air circulation blower 16 on the described hot air circulation pipeline 12, described exhausting moisture pipeline 11, be provided with burner 17 on hot air circulation pipeline 12 and the fan connecting tube road 13, every described hot blast is carried on the subtube 9 and is provided with a plurality of air outlets 18 that pass described kiln top board 2, is provided with a plurality of suction openings 19 that pass described kiln top board 2 on the described exhausting moisture pipeline 11 He on the hot air circulation pipeline 12; Described kiln automatic control system comprises main controller module 20 and joins with main controller module 20 and be used for the touch-screen 21 of man-machine interaction, the input terminus of described main controller module 20 is connected to a plurality of temperature sensors 22 that are laid in each dry section and are used for the temperature in each dry section is detected and a plurality of humidity sensor 23 that is laid in each dry section and is used for the humidity in each dry section is detected, the output terminal of described main controller module 20 is connected to for to sending calorifier 14 to carry out the first frequency transformer 24 of variable frequency control, be used for moisture-eliminating blower 15 is carried out the second frequency transformer 25 of variable frequency control, be used for hot air circulation blower 16 is carried out the 3rd frequency transformer 26 of variable frequency control, a plurality of air-supply motor-driven control valves 27 that are laid in each air outlet 18 place and are used for air output is regulated and a plurality of exhausting motor-driven control valve 28 that is laid in each suction opening 19 place and is used for the exhausting amount is regulated, described calorifier 14 and described the first frequency transformer 24 of sending joins, described moisture-eliminating blower 15 joins with described the second frequency transformer 25, described hot air circulation blower 16 joins with described the 3rd frequency transformer 26, and described burner 17 joins with the output terminal of described main controller module 20.
Such as Fig. 7～shown in Figure 10, in the present embodiment, in the present embodiment, described building enclosure 1 is the brick mixed building body, and the height of described building enclosure 1 is 4.5m～6.5m; The quantity of described across bulkhead 3 is five roads, the quantity of corresponding described dry section is six and advances car end door 6 and be respectively the first dry section 1-1, the second dry section 1-2, the 3rd dry section 1-3, the 4th dry section 1-4, the 5th dry section 1-5 and the 6th dry section 1-6 to the direction that goes out car end door 7 along described, and it is six that described hot blast is carried the quantity of subtube 9; Be vertically arranged with six row in the described building enclosure 1 and be used for rotation blower 4 to base substrate 8 intermittent blowings to be dried, the quantity in corresponding described dry track is five, and the described quantity of advancing car end door 6 and going out car end door 7 is five; During implementation, in order to make base substrate 8 uniform drying to be dried, between every dry track at a distance of fixing spacing.By across bulkhead 3 separated six dry sections, every section has relatively independent space medium, temperature, humidity and flow velocity, can adapt to the corresponding requirements of base substrate 8 different steps moisture evaporation to be dried.At the first dry section 1-1 and the second dry section 1-2, base substrate 8 drying and dehydratings to be dried are fast, and dry shrinkage is large; At the 3rd dry section 1-3 and the 4th dry section 1-4, hot blast is mainly used in carrying out diffusion and the evaporation of base substrate 8 internal moisture to be dried; At the 5th dry section 1-5 and the 6th dry section 1-6, along with moisture in the base substrate 8 to be dried reduces gradually, dry indoor air temperature constantly raises, and this stage is mainly passed through the variation of temperature value in this section of kiln automatic controlling system.
As shown in Figure 9 and Figure 10, in the present embodiment, the quantity of described exhausting moisture pipeline 11 is that one and a plurality of suction openings 19 of being arranged on the described exhausting moisture pipeline 11 are positioned at the described first dry section 1-1, and the quantity of described hot air circulation pipeline 12 is that one and a plurality of suction openings 19 of being arranged on the described hot air circulation pipeline 12 are positioned at the described second dry section 1-2; The quantity in described fan connecting tube road 13 is two, and corresponding described to send the quantity of calorifier 14 be two, and the quantity of described the first frequency transformer 24 is two; Base substrate 8 to be dried enters the kiln initial stage, very responsive for humiture, therefore, in advancing the first dry section 1-1 that the car end begins, kiln is provided with exhausting moisture pipeline 11, advancing at kiln in the second dry section 1-2 that the car end begins to be provided with hot air circulation pipeline 12, utilize that highly humid air in the first dry section 1-1 and the second dry section 1-2 is counter to send each dryer section in the rear end, help to regulate the temperature and humidity in each dryer section of rear end, prevent that base substrate 8 internal moisture translational speeds to be dried from cracking less than the surface-moisture velocity of evaporation.Go out the several dry section of car end at kiln, because this section has been crossed stagnation point, the moisture evaporation can not cause that base substrate 8 to be dried shrinks again, so will send calorifier 14 to be connected near on the described hot blast delivery manifold road 10 that goes out car end door 7 by fan connecting tube road 13, a large amount of hot blasts is sent in the several dry section that kiln goes out the car end, can rapidly base substrate 8 moisture to be dried be reduced to design objective, help to improve drying efficiency.
As shown in Figure 9 and Figure 10, in the present embodiment, in the present embodiment, every described hot blast is carried on the subtube 9 and is provided with three air outlets 18, be provided with three suction openings 19 on the described exhausting moisture pipeline 11 He on the hot air circulation pipeline 12, each described air outlet 18 place and each described suction opening 19 place are laid with a temperature sensor 22, a humidity sensor 23, a pressure transmitter 29 and a under meter 30; So lay temperature, humidity, pressure and flow detection point, can guarantee well the equilibrium of kiln internal temperature and humidity.
As shown in figure 11, in the present embodiment, described kiln automatic control system comprises the upper monitoring computer 31 that joins with described main controller module 20 and the printer 32 that joins with described upper monitoring computer 31; The input terminus of described main controller module 20 is connected to a plurality of pressure transmitters 29 that are laid in each dry section and are used for the air pressure in each dry section is detected and a plurality of under meter 30 that is laid in each dry section and is used for the air flow quantity in each dry section is detected.
Such as Figure 12 and shown in Figure 13, in the present embodiment, described rotation blower 4 comprises taper air duct 4-1 and is arranged on taper air duct 4-1 top and is used for driving the air barrel motor 4-2 that taper air duct 4-1 rotates, the top of described taper air duct 4-1 is provided with for the fence type air intake 4-3 that sucks hot blast to taper air duct 4-1, the output shaft end of described motor extend among the taper air duct 4-1 and is connected be used to the wind feeding blades 4-4 that presses down hot blast, be provided with air outlet 4-5 along straight line from top to bottom on the sidewall of described taper air duct 4-1, described air-out 4-5 place is connected with the adjustable plate 4-6 that polylith is used for regulating air output; The output terminal of described main controller module 20 is connected to for the 4th frequency transformer 33 that air barrel motor 4-2 is carried out variable frequency control, and described air barrel motor 4-2 and described the 4th frequency transformer 33 join.Particularly, the quantity of described adjustable plate 4-6 is 5～20.
Hot blast among the present invention is sent into kiln indirectly through rotation blower 4, particularly, rotation blower 4 sucks hot blast by fence type blast inlet 4-3, and wind feeding blades 4-4 presses down hot blast, becomes upper next bar line evenly to send hot blast by the air outlet 4-5 on the lower taper air duct 4-1 sidewall again; Taper air duct 4-1 drives rotation by air barrel motor 4-2, and air-out 4-5 has realized the air-supply at intermittence to base substrate 8 to be dried along with taper air duct 4-1 intermittently blows to base substrate to be dried 8 surfaces with hot blast; Regulate the different rotating speeds of taper air duct 4-1, can realize the air-supply at different time interval; Air-out 4-5 place is connected with polylith adjustable plate 4-6, and rotation adjustable plate 4-6 can balancedly regulate up and down air quantity everywhere.Realize intermittently air-supply on base substrate to be dried 8 surfaces, can leave time enough to external migration for base substrate 8 internal moisture to be dried at the blowing interval, impel the moisture evaporation to reach balance.Among the present invention, be vertically arranged with multiple row in the building enclosure 1 and be used for rotation blower 4 to base substrate 8 intermittent blowings to be dried, can make that the γ-ray emission vertical circulation flows in the kiln, prevent that kiln from air stratification occurring and affecting the quality of dry base substrate.
Kiln automatic control system among the present invention is changed to starting point with control drying medium temperature and humidity, each temperature sensor 22, humidity sensor 23, the signal of pressure transmitter 29 and under meter 30 collection in worksite, after carrying out analyzing and processing, main controller module 20 generates corresponding control signal, air-supply motor-driven control valve 27 and exhausting motor-driven control valve 28 are controlled, watt level to burner 17 is controlled, and send calorifier 14 to carry out variable frequency control by 24 pairs in the first frequency transformer, carry out variable frequency control by 25 pairs of moisture-eliminating blowers of the second frequency transformer 15, carry out variable frequency control by 26 pairs of hot air circulation blowers of the 3rd frequency transformer 16,33 couples of air barrel motor 4-2 carry out variable frequency control by the 4th frequency transformer; By control air-supply motor-driven control valve 27 with send calorifier 14 to realize control to air output in each dry section, watt level by control combustion device 17, to the exhausting moisture pipeline 11 of flowing through, the air in hot air circulation pipeline 12 and fan connecting tube road 13 heats, realized control to humidity discharging amount in the first dry section 1-1 by control exhausting motor-driven control valve 28 and moisture-eliminating blower 15, realized control to hot air circulation amount in the second dry section 1-2 by control exhausting motor-driven control valve 28 and hot air circulation blower 16, by the rotating speed of control air barrel motor 4-2, realized the air-supply at rotation blower 4 different time intervals; In addition, main controller module 20 is also exported to touch-screen 21 and upper monitoring computer 31 in real time with the acquired signal of its reception, show each parameter at touch-screen 21, and at upper monitoring computer 31 generation temperature dynamic response curve and humidity dynamic response curves, operator can compare the curve that generates with drying theory temperature curve and moisture curve, the operation of the timely monitoring and controlling kiln of confession operator.Operator also can print the form that it needs by printer 32 as required.
Kiln automatic control system among the present invention can make kiln reasonably move in temperature, the humidity environment always, both can avoid because the appearance that temperature, the unreasonable adobe crackle that causes of humidity or adobe do not parch phenomenon, can send by change again the output rating of calorifier 14, moisture-eliminating blower 15 and hot air circulation blower 16, reach energy-saving and cost-reducing purpose.Simultaneously, can also store drying system and the relevant parameter of various products in the system, for calling at any time.In order to satisfy different manufacturing specification requests, can also in system, set corresponding control parameter according to different industrial scales by touch-screen 21 or upper monitoring computer 31, the data and parameter reference of operation is provided for control.
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 33%, mineral binder bond 53%, micropore pore-forming material 14%; Described solid waste is flyash, and described mineral binder bond is riverway sludge, and described micropore pore-forming material is rice husk.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 36%, mineral binder bond 51%, micropore pore-forming material 13%; Described solid waste is slag, and described mineral binder bond is riverway sludge, and described micropore pore-forming material is granular polystyrene.Wherein, granular polystyrene can be pulverized by the waste polyethylene foam and form.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 39%, mineral binder bond 49%, micropore pore-forming material 12%; Described solid waste is metallurgical tailings, and described mineral binder bond is dregs, and described micropore pore-forming material is diatomite.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 45%, mineral binder bond 45%, micropore pore-forming material 10%; Described solid waste is red mud, and described mineral binder bond is dregs, and described micropore pore-forming material is diatomite.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 42%, mineral binder bond 47%, micropore pore-forming material 11%; Described solid waste is building waste, and described mineral binder bond is loess, and described micropore pore-forming material is lime.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
Embodiment 7
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 43%, mineral binder bond 52%, micropore pore-forming material 5%; Described solid waste is domestic refuse, and described mineral binder bond is riverway sludge, and described micropore pore-forming material is rice husk.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
Embodiment 8
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 44%, mineral binder bond 49%, micropore pore-forming material 7%; Described solid waste is municipal sludge, and described mineral binder bond is loess, and described micropore pore-forming material is lime.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
The porous sintered heat insulating hollow building block 68 of the present embodiment is grouped into by the one-tenth of following weight percent: solid waste 37%, mineral binder bond 54%, micropore pore-forming material 9%; Described solid waste is domestic refuse, and described mineral binder bond is loess, and described micropore pore-forming material is lime.
The preparation method of the present embodiment is as different from Example 1:
Other step is all identical with embodiment 1.
Among above-described embodiment 1～embodiment 9, prepared porous sintered heat insulating hollow building block 68, hole ratio are 35%～60%, microporosity is 5%～15%, density is 700kg/m
3～1000kg/m
3, thermal conductivity is not more than 0.22W/mK; In conjunction with Fig. 6, the length of prepared porous sintered heat insulating hollow building block 68 be 365mm～490mm, width be 240mm～290mm, highly for 240mm～115mm, hole on the prepared porous sintered heat insulating hollow building block 68 is evenly distributed slot 68-1, the length of described slot 68-1 is 20mm～50mm, the width of described slot 68-1 is 8mm～15mm, the thickness of the outer wall 68-2 of described porous sintered heat insulating hollow building block 68 is 12mm～20mm, and the thickness of the rib 68-3 of described porous sintered heat insulating hollow building block 68 is 3mm～10mm.In addition, also be provided with handgrip hole 68-4 and breather hole 68-5 on the described porous sintered heat insulating hollow building block 68.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (9)
1. porous sintered heat insulating hollow building block is characterized in that: the hole ratio of described porous sintered heat insulating hollow building block (68) is 35%～60%, density is 700kg/m
3～1000kg/m
3, thermal conductivity is not more than 0.22W/mK, described porous sintered heat insulating hollow building block (68) is grouped into by the one-tenth of following weight percent: solid waste 30%～45%, mineral binder bond 45%～55%, micropore pore-forming material 5%～15%, described solid waste is coal gangue, flyash, slag, metallurgical tailings, red mud, building waste, domestic refuse or municipal sludge, described mineral binder bond is shale, riverway sludge, dregs or loess, and described micropore pore-forming material is sawdust, rice husk, granular polystyrene, diatomite or lime;
The preparation technology of this porous sintered heat insulating hollow building block may further comprise the steps:
Step 1, grain composition: at first, the first material conveyor (35) is delivered to jaw crusher (36) with the solid waste in the feeding machine (34); Then, jaw crusher (36) carries out the first time to solid waste to be pulverized, and the second material conveyor (37) will be pulverized for the first time the solid waste that obtains and deliver to vertical mill (38); Then, vertical mill (38) carries out the pulverizing second time to pulverizing for the first time the solid waste that obtains, and 3 material transfer roller (39) will be pulverized for the second time the solid waste that obtains and deliver to screening plant (40);
Step 2, sieve classification: screening plant (40) will be pulverized for the second time the solid waste that obtains and be divided into fines, middle material, coarse fodder and defective material, described fines is that granularity is less than the solid waste of 0.5mm, described middle material is that granularity is the solid waste of 0.5mm～1.0mm, described coarse fodder is that granularity is greater than 1.0mm and less than or equal to the solid waste of 1.2mm, described defective material is that granularity is greater than the solid waste of 1.2mm; The defective material that feed back transfer roller (41) obtains screening is recycled to vertical mill (38) and again pulverizes;
Simultaneously, it is stand-by that the fines that 4 materials transfer roller (42) obtains screening is delivered to the first raw material cabin (45) storage, it is stand-by that the middle material that the 5th material conveyor (43) obtains screening is delivered to the second raw material cabin (46) storage, and it is stand-by that the coarse fodder that the 6th material conveyor (44) obtains screening is delivered to the 3rd raw material cabin (47) storage;
Step 3, raw material weighing: by weight percentage weighing solid waste, mineral binder bond and micropore pore-forming material; Described solid waste is comprised of the coarse fodder of storing in the middle material of storing in the fines of storing in the first raw material cabin (45), the second raw material cabin (46) and the 3rd raw material cabin (47);
When the porous sintered heat insulating hollow building block (68) of required preparation was non-bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 6～10: 15～25 in the described solid waste: 65～75;
When the porous sintered heat insulating hollow building block (68) of required preparation was bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 0～5: 5～15 in the described solid waste: 80～90;
Step 4, mixing homogenizing and ageing: at first, load weighted solid waste, mineral binder bond and micropore pore-forming material in the step 3 are sent into biaxial rneader (49) through the first rubber conveyer (48) together, carry out obtaining the one-level compound after first adds the water mix and blend, the water ratio of control one-level compound is 16%～20%; Then, the one-level compound is sent into ageing storehouse (51) ageing through the second rubber conveyer (50) and obtain the secondary compound after 36～96 hours; Then, the secondary compound is sent into disk sieve type feeding machine (53) through the 3rd rubber conveyer (52), carry out obtaining three grades of compounds after second adds the water mix and blend, the water ratio of three grades of compounds of control is 21%～23%; At last, the 7th material conveyor (54) is delivered to extrusion shaping machine (55) with three grades of compounds in the disk sieve type feeding machine (53);
Step 5, extrusion moulding: adopt extrusion shaping machine (55) that three grades of compound plasticity are extruded into continuous mud bar, extrusion moulding pressure is 1.5MPa～2.0MPa, extrusion moulding vacuum tightness is-and 0.092MPa～-0.1MPa;
Step 6, cut code fortune: adopt synchronous mud bar cutting machine (56) the mud bar of moulding in the step 5 to be cut into the base substrate of desired size, and the base substrate that adopts mechanical manipulator setting machine (57) will cut into desired size is placed on the drying cart (58);
Step 7, drying: the base substrate that will cut into desired size by drying cart (58) is sent into the body drying chamber (59) of frame bent structure and is carried out drying;
Step 8, roasting: the base substrate that drying is good is pulled out and is headed in the tunnel furnace (60) by drying cart (58), through tunnel furnace (60) base substrate is fired to be finished product.
2. according to porous sintered heat insulating hollow building block claimed in claim 1, it is characterized in that: the length of described porous sintered heat insulating hollow building block (68) is 365mm～490mm, width is 240mm～290mm, highly be 240mm～115mm, hole on the described porous sintered heat insulating hollow building block (68) is evenly distributed slot (68-1), the length of described slot (68-1) is 20mm～50mm, the width of described slot (68-1) is 8mm～15mm, the thickness of the outer wall (68-2) of described porous sintered heat insulating hollow building block (68) is 12mm～20mm, and the thickness of the rib (68-3) of described porous sintered heat insulating hollow building block (68) is 3mm～10mm.
3. one kind prepares the as claimed in claim 1 technique of porous sintered heat insulating hollow building block, it is characterized in that this technique may further comprise the steps:
Step 1, grain composition: at first, the first material conveyor (35) is delivered to jaw crusher (36) with the solid waste in the feeding machine (34); Then, jaw crusher (36) carries out the first time to solid waste to be pulverized, and the second material conveyor (37) will be pulverized for the first time the solid waste that obtains and deliver to vertical mill (38); Then, vertical mill (38) carries out the pulverizing second time to pulverizing for the first time the solid waste that obtains, and 3 material transfer roller (39) will be pulverized for the second time the solid waste that obtains and deliver to screening plant (40);
Step 2, sieve classification: screening plant (40) will be pulverized for the second time the solid waste that obtains and be divided into fines, middle material, coarse fodder and defective material, described fines is that granularity is less than the solid waste of 0.5mm, described middle material is that granularity is the solid waste of 0.5mm～1.0mm, described coarse fodder is that granularity is greater than 1.0mm and less than or equal to the solid waste of 1.2mm, described defective material is that granularity is greater than the solid waste of 1.2mm; The defective material that feed back transfer roller (41) obtains screening is recycled to vertical mill (38) and again pulverizes;
Simultaneously, it is stand-by that the fines that 4 materials transfer roller (42) obtains screening is delivered to the first raw material cabin (45) storage, it is stand-by that the middle material that the 5th material conveyor (43) obtains screening is delivered to the second raw material cabin (46) storage, and it is stand-by that the coarse fodder that the 6th material conveyor (44) obtains screening is delivered to the 3rd raw material cabin (47) storage;
Step 3, raw material weighing: by weight percentage weighing solid waste, mineral binder bond and micropore pore-forming material; Described solid waste is comprised of the coarse fodder of storing in the middle material of storing in the fines of storing in the first raw material cabin (45), the second raw material cabin (46) and the 3rd raw material cabin (47);
When the porous sintered heat insulating hollow building block (68) of required preparation was non-bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 6～10: 15～25 in the described solid waste: 65～75;
When the porous sintered heat insulating hollow building block (68) of required preparation was bearing heat insulation hollow block, the weight ratio of coarse fodder, middle material and fines was 0～5: 5～15 in the described solid waste: 80～90;
Step 4, mixing homogenizing and ageing: at first, load weighted solid waste, mineral binder bond and micropore pore-forming material in the step 3 are sent into biaxial rneader (49) through the first rubber conveyer (48) together, carry out obtaining the one-level compound after first adds the water mix and blend, the water ratio of control one-level compound is 16%～20%; Then, the one-level compound is sent into ageing storehouse (51) ageing through the second rubber conveyer (50) and obtain the secondary compound after 36～96 hours; Then, the secondary compound is sent into disk sieve type feeding machine (53) through the 3rd rubber conveyer (52), carry out obtaining three grades of compounds after second adds the water mix and blend, the water ratio of three grades of compounds of control is 21%～23%; At last, the 7th material conveyor (54) is delivered to extrusion shaping machine (55) with three grades of compounds in the disk sieve type feeding machine (53);
Step 5, extrusion moulding: adopt extrusion shaping machine (55) that three grades of compound plasticity are extruded into continuous mud bar, extrusion moulding pressure is 1.5MPa～2.0MPa, extrusion moulding vacuum tightness is-and 0.092MPa～-0.1MPa;
Step 6, cut code fortune: adopt synchronous mud bar cutting machine (56) the mud bar of moulding in the step 5 to be cut into the base substrate of desired size, and the base substrate that adopts mechanical manipulator setting machine (57) will cut into desired size is placed on the drying cart (58);
Step 7, drying: the base substrate that will cut into desired size by drying cart (58) is sent into the body drying chamber (59) of frame bent structure and is carried out drying;
Step 8, roasting: the base substrate that drying is good is pulled out and is headed in the tunnel furnace (60) by drying cart (58), through tunnel furnace (60) base substrate is fired to be finished product.
4. according to technique claimed in claim 3, it is characterized in that: synchronous mud bar cutting machine (56) comprises frame (61) described in the step 6, be equipped with on the described frame (61) velocity sensor (62) that the extruded velocity to mud bar (67) detects, with the mud bar transfer mechanism of the extruded velocity synchronous transport mud bar (67) of mud bar (67) and with the mud bar cutting mechanism of the extruded velocity synchronous cutting mud bar (67) of mud bar (67), and be used for cutting automatic control system that mud bar transfer mechanism and mud bar cutting mechanism are controlled; Described mud bar transfer mechanism comprises mud bar conveying motor (63-1), the Belt Conveying assembly that the mud bar of carrying motor (63-1) to join with the mud bar is carried step-down gear (63-2) and carried step-down gear (63-2) to join with the mud bar, described Belt Conveying assembly is made of a plurality of belt pulleys and two belts, a plurality of described belt pulleys are respectively the first belt pulley (63-3) of carrying step-down gear (63-2) to join with described mud bar, be erected at second belt pulley (63-4) of described frame (61) top by the bracing frame (61-1) that is arranged on described frame (61) top, be horizontally disposed with and be erected at the 3rd belt pulley (63-5) of described frame (61) top with described the second belt pulley (63-4), be positioned at tiltedly below and be fixedly connected on the 4th belt pulley (63-6) on the described frame (61) of described the 3rd belt pulley (63-5), be positioned at tiltedly below and be fixedly connected on the 5th belt pulley (63-7) on the described frame (61) and be positioned at the oblique upper of described the 5th belt pulley (63-7) and be positioned at six belt pulley (63-10) of described the second belt pulley (63-4) below tiltedly of described the 4th belt pulley (63-6), two described belts be respectively around be connected on described the first belt pulley (63-3) and the second belt pulley (63-4) the first belt (63-8) and around being connected to described the second belt pulley (63-4), the 3rd belt pulley (63-5), the 4th belt pulley (63-6), the second belt (63-9) on the 5th belt pulley (63-7) and the 6th belt pulley (63-10); Described mud bar cutting mechanism comprises and is four root posts (64-1) that square is laid in described frame (61) top, the wire frame (64-4) that is installed in the upper and cutting knife that can slide up and down along the chute (64-20) that is arranged on the column (64-1) of column (64-1) and is fixedly connected on above the described cutting knife and can moves up and down with cutting knife by vertical beam (64-12), and be used for driving the mud bar cutting motor (64-5) that described cutting knife slides up and down at column (64-1) and the mud bar cutting speed reducer (64-6) that joins with mud bar cutting motor (64-5), frame (61) top that is positioned at the space that four described columns (64-1) surround is provided with the cutting bed (64-7) for the cutting of mud bar, be fixedly connected with four described columns (64-1) around the described cutting bed (64-7), the bottom of described cutting bed (64-7) is provided with the slide block (64-21) that slides on described frame (61) top, be connected with the many cutting steel wires (64-8) that are used for cutting mud bar (67) on the described wire frame (64-4), the output shaft of described mud bar cutting speed reducer (64-6) is connected with cutting knife with described frame (61) by connecting rod assembly; Described velocity sensor (62), mud bar carry motor (63-1) and mud bar cutting motor (64-5) all to join with described cutting automatic control system.
5. according to technique claimed in claim 4, it is characterized in that: be provided with end face on the described frame (61) mutually concordant with described cutting bed (64-7) and be used for the mud bar carriage (66) of carrying mud bar (67), the top of four described columns (64-1) all is connected with crossbeam (64-18) between any two, be provided with on the described wire frame (64-4) be used to the steel wire hanging ring that hangs described cutting steel wire (64-8) (64-19), the quantity of described cutting knife is two and is respectively front cutting knife (64-2) and rear cutting knife (64-3), described front cutting knife (64-2) and rear cutting knife (64-3) symmetry are installed on the described column (64-1), be connected with couple axle (64-13) on the output shaft of described mud bar cutting speed reducer (64-6), described couple axle (64-13) is connected on the described frame (61) by bearing (64-14), the quantity of described connecting rod assembly is two groups and is respectively the front rod assembly and the back link assembly, described front rod assembly comprises the first connecting rod (64-9) that is rotatably connected on described mud bar cutting speed reducer (64-6) output shaft and second connecting rod (64-10) and the third connecting rod (64-11) that is rotationally connected with described first connecting rod (64-9), described second connecting rod (64-10) is rotatably connected on the described frame (61), and described third connecting rod (64-11) is rotatably connected on the described front cutting knife (64-2); Described back link assembly comprises the 4th connecting rod (64-15) that is rotatably connected on the described couple axle (64-13) and the 5th connecting rod (64-16) and the 6th connecting rod (64-17) that is rotationally connected with described the 4th connecting rod (64-15), described the 4th connecting rod (64-15) is symmetrical arranged with described first connecting rod (64-9), described the 5th connecting rod (64-16) is rotatably connected on described frame (61) and upward and with described second connecting rod (64-10) is symmetrical arranged, and described the 6th connecting rod (64-17) is rotatably connected on described rear cutting knife (64-3) and upward and with described third connecting rod (64-11) is symmetrical arranged.
6. according to claim 4 or 5 described techniques, it is characterized in that: described cutting automatic control system comprises controller module (65-1), the human-computer interaction module (65-3) that joins with controller module (65-1) and be the power module (65-2) of each electricity consumption module for power supply in the system, the input terminus of described controller module (65-1) is connected to for the signal to velocity sensor (62) output and amplifies, the signal conditioning circuit module (65-6) of filtering and A/D conversion process, the output terminal of described controller module (65-1) is connected to the first motor driver module (65-4) and the second motor driver module (65-5), described velocity sensor (62) joins with described signal conditioning circuit module (65-6), described mud bar carries motor (63-1) and described the first motor driver module (65-4) to join, and described mud bar cutting motor (64-5) joins with described the second motor driver module (65-5).
7. according to technique claimed in claim 3, it is characterized in that: the body drying chamber (59) of the bent structure of frame described in the step 7 comprises the kiln main body, kiln supply air system and kiln automatic control system, described kiln main body comprises the building enclosure (1) of cube structure and is arranged on the kiln top board (2) on building enclosure (1) top, be horizontally arranged with the across bulkhead (3) that multiple tracks is used for building enclosure (1) internal space is separated into a plurality of dry sections in the described building enclosure (1), be vertically arranged with multiple row in the described building enclosure (1) for the rotation blower (4) to base substrate to be dried (8) intermittent blowing, passage between the adjacent two row rotations blowers (4) has consisted of the dry track that drying cart (5) that a confession is equipped with base substrate to be dried (8) passes through, and building enclosure (1) two ends of aiming at described dry track are symmetrically arranged with into car end door (6) and go out car end door (7); Described kiln supply air system comprise be laid in kiln top board (2) top and respectively corresponding in a plurality of dry sections many hot blasts of heat air delivery carry subtubes (9), many hot blast carries subtube (9) to connect as one by a hot blast delivery manifold road (10), near being provided with exhausting moisture pipeline (11) and hot air circulation pipeline (12) on the described hot blast delivery manifold road (10) that advances car end door (6), send calorifier (14) near described upper being connected with by fan connecting tube road (13) in hot blast delivery manifold road (10) that goes out car end door (7), be connected with moisture-eliminating blower (15) on the described exhausting moisture pipeline (11), be connected with hot air circulation blower (16) on the described hot air circulation pipeline (12), described exhausting moisture pipeline (11), be provided with burner (17) on hot air circulation pipeline (12) and fan connecting tube road (13), every described hot blast is carried on the subtube (9) and is provided with a plurality of air outlets (18) that pass described kiln top board (2), and described exhausting moisture pipeline (11) upward and on the hot air circulation pipeline (12) is provided with a plurality of suction openings (19) that pass described kiln top board (2); Described kiln automatic control system comprises main controller module (20) and joins with main controller module (20) and be used for the touch-screen (21) of man-machine interaction, the input terminus of described main controller module (20) is connected to a plurality of temperature sensors (22) that are laid in each dry section and are used for the temperature in each dry section is detected and a plurality of humidity sensor (23) that is laid in each dry section and is used for the humidity in each dry section is detected, the output terminal of described main controller module (20) is connected to for the first frequency transformer (24) to sending calorifier (14) to carry out variable frequency control, be used for moisture-eliminating blower (15) is carried out second frequency transformer (25) of variable frequency control, be used for hot air circulation blower (16) is carried out the 3rd frequency transformer (26) of variable frequency control, a plurality of air-supply motor-driven control valves (27) that are laid in that each air outlet (18) is located and are used for air output is regulated and a plurality ofly be laid in that each suction opening (19) is located and for the exhausting motor-driven control valve (28) that the exhausting amount is regulated, described calorifier (14) and described the first frequency transformer (24) of sending joins, described moisture-eliminating blower (15) joins with described the second frequency transformer (25), described hot air circulation blower (16) joins with described the 3rd frequency transformer (26), and described burner (17) joins with the output terminal of described main controller module (20).
8. according to technique claimed in claim 7, it is characterized in that: described building enclosure (1) is the brick mixed building body, and the height of described building enclosure (1) is 4.5m～6.5m; The quantity of described across bulkhead (3) is five roads, the quantity of corresponding described dry section is six and advances car end door (6) and be respectively the first dry section (1-1), the second dry section (1-2), the 3rd dry section (1-3), the 4th dry section (1-4), the 5th dry section (1-5) and the 6th dry section (1-6) to the direction that goes out car end door (7) along described, and it is six that described hot blast is carried the quantity of subtube (9); Be vertically arranged with six row in the described building enclosure (1) and be used for rotation blower (4) to base substrate to be dried (8) intermittent blowing, the quantity in corresponding described dry track is five, and the described quantity of advancing car end door (6) and going out car end door (7) is five; The quantity of described exhausting moisture pipeline (11) is that one and a plurality of suction openings (19) of being arranged on the described exhausting moisture pipeline (11) are positioned at the described first dry section (1-1), and the quantity of described hot air circulation pipeline (12) is that one and a plurality of suction openings (19) of being arranged on the described hot air circulation pipeline (12) are positioned at the described second dry section (1-2); The quantity in described fan connecting tube road (13) is two, and corresponding described to send the quantity of calorifier (14) be two, and the quantity of described the first frequency transformer (24) is two; Every described hot blast is carried on the subtube (9) and is provided with three air outlets (18), described exhausting moisture pipeline (11) upward and on the hot air circulation pipeline (12) is provided with three suction openings (19), and each described air outlet (18) is located to locate to be laid with a temperature sensor (22), a humidity sensor (23), a pressure transmitter (29) and a under meter (30) with each described suction opening (19).
9. according to claim 7 or 8 described techniques, it is characterized in that: described kiln automatic control system comprises the upper monitoring computer (31) that joins with described main controller module (20) and the printer (32) that joins with described upper monitoring computer (31); The input terminus of described main controller module (20) is connected to a plurality of pressure transmitters (29) that are laid in each dry section and are used for the air pressure in each dry section is detected and a plurality of under meter (30) that is laid in each dry section and is used for the air flow quantity in each dry section is detected; Described rotation blower (4) comprises taper air duct (4-1) and is arranged on taper air duct (4-1) top and is used for driving the air barrel motor (4-2) that taper air duct (4-1) rotates, the top of described taper air duct (4-1) is provided with for the fence type blast inlet (4-3) that sucks hot blast to taper air duct (4-1), the output shaft end of described motor extend in the taper air duct (4-1) and is connected be used to the wind feeding blades that presses down hot blast (4-4), be provided with air outlet (4-5) along straight line from top to bottom on the sidewall of described taper air duct (4-1), described air outlet (4-5) locates to be connected with the adjustable plate (4-6) that polylith is used for regulating air output; The output terminal of described main controller module (20) is connected to for the 4th frequency transformer (33) that air barrel motor (4-2) is carried out variable frequency control, and described air barrel motor (4-2) joins with described the 4th frequency transformer (33).
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| CN2012103056870A CN102807390B (en) | 2012-08-26 | 2012-08-26 | Porous sintering heat-insulating hollow block and manufacturing process thereof |
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| CN111004047A (en) * | 2019-11-22 | 2020-04-14 | 北京矿冶科技集团有限公司 | Novel process for industrial mass production of foamed ceramics, application of foamed ceramics and building component |
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| CN115636626A (en) * | 2022-09-07 | 2023-01-24 | 中国华能集团清洁能源技术研究院有限公司 | Concrete with heat storage function, preparation method and concrete heat accumulator |
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| CN1830869A (en) * | 2006-03-22 | 2006-09-13 | 西安墙体材料研究设计院 | Sintered heat insulating hollow building block |
| CN101684680B (en) * | 2009-08-19 | 2011-06-01 | 西安墙体材料研究设计院 | Iron tailing sintered porous heat insulation board |
| CN101643365A (en) * | 2009-09-01 | 2010-02-10 | 武汉理工大学 | Preparation method of self-heat-insulating bearing sintered porous blocks |
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