CN117534348A - Method for preparing silicate cement clinker by using mineral waste - Google Patents
Method for preparing silicate cement clinker by using mineral waste Download PDFInfo
- Publication number
- CN117534348A CN117534348A CN202311491988.1A CN202311491988A CN117534348A CN 117534348 A CN117534348 A CN 117534348A CN 202311491988 A CN202311491988 A CN 202311491988A CN 117534348 A CN117534348 A CN 117534348A
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- China
- Prior art keywords
- clinker
- fixedly connected
- cooling box
- cooling
- primary cooling
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000010811 mineral waste Substances 0.000 title claims abstract description 17
- 239000003469 silicate cement Substances 0.000 title claims description 6
- 238000001816 cooling Methods 0.000 claims abstract description 197
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000001354 calcination Methods 0.000 claims abstract description 15
- 239000011398 Portland cement Substances 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims description 31
- 239000004065 semiconductor Substances 0.000 claims description 30
- 238000000227 grinding Methods 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 claims description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 10
- 235000012054 meals Nutrition 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/47—Cooling ; Waste heat management
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of cement clinker preparation, in particular to a method for preparing portland cement clinker by utilizing mineral waste, which comprises a base, wherein the upper surface of the base is provided with a secondary cooling mechanism for carrying out secondary cooling on clinker, the secondary cooling mechanism is provided with a mounting bracket, a primary cooling mechanism for carrying out primary cooling on clinker is arranged on the inner side of the mounting bracket, the primary cooling mechanism is provided with a discharging hopper for conveying the calcined clinker, the primary cooling mechanism comprises a primary cooling box fixedly connected on the inner side of the mounting bracket, and the agglomerated clinker is crushed when the calcined clinker is obtained by the primary cooling mechanism, so that the clinker is heated more fully in the cooling process, the cooling efficiency of the clinker is improved, the energy loss is reduced, and meanwhile, hot air generated in the cooling process is conveyed to calcination equipment again to preheat raw meal.
Description
Technical Field
The invention relates to the technical field of cement clinker preparation, in particular to a method for preparing silicate cement clinker by utilizing mineral waste.
Background
The cement clinker is prepared by calcining cement raw materials mixed with mineralizer to form cement clinker, and in the process of preparing cement clinker, the original sandstone is replaced by silica slag (silicon content is 90%) with low crystalline silicon, the converter slag is replaced by copper slag, and the yellow phosphorus slag is used as mineralizer, so that the combustibility of raw materials can be improved, the energy consumption is reduced, and the clinker quality is improved.
However, the clinker obtained from the raw meal after calcination produces many agglomerates, and the central position of the agglomerated clinker is cooled slowly during the cooling of the clinker obtained from calcination, which affects the overall cooling efficiency of the clinker, and at the same time, more energy is used during the cooling.
Disclosure of Invention
Therefore, the invention provides a method for preparing silicate cement clinker by using mineral waste, which solves the technical problems.
The invention provides a method for preparing silicate cement clinker by using mineral waste, which comprises the following steps:
s1, preparing raw materials: preparing the required silicon slag and copper slag, and then respectively crushing the silicon slag and the copper slag.
S2, mixing raw materials: and (3) uniformly mixing the crushed silica slag and copper slag in the step (S1) according to the proportion of ingredients to obtain a mixture.
S3, grinding raw materials: the mixture obtained in step S2 is ground again to further refine the particles and increase the surface area.
S4, preparing a mineralizer: the yellow phosphorus slag and the calcium fluoride slag are mixed in a two-to-one ratio mode to prepare the mineralizer.
S5, firing raw materials: and (3) uniformly mixing the ground mixture obtained in the step (S3) and the mineralizer obtained in the step (S4) according to the proportion of the ingredients, and then placing the mixture into a kiln for calcination to form clinker.
S6, cooling clinker: and (5) conveying the clinker obtained in the step (S5) into cooling equipment for cooling to obtain cooled clinker.
S7, grinding clinker; grinding the cooling clinker obtained in the step S6 to obtain the cement clinker with proper fineness.
The cooling equipment related to the step S6 comprises a base, wherein a secondary cooling mechanism for performing secondary cooling on clinker is arranged on the upper surface of the base, and a mounting bracket is arranged on the secondary cooling mechanism.
The primary cooling mechanism is arranged on the inner side of the mounting bracket and is provided with a clinker discharging hopper for conveying the calcined clinker.
The primary cooling mechanism comprises a primary cooling box fixedly connected to the inner side of the mounting bracket, two symmetrically arranged second connecting pipes for recovering hot gas are connected to the upper surface of the primary cooling box in a penetrating manner, a plurality of first connecting pipes for conveying cold air are distributed on the circumferential surface of the primary cooling box in a circumferential array manner, crushing pieces for crushing caking clinker are arranged in the primary cooling box, and auxiliary pieces for being matched with the crushing pieces are arranged at the bottom end of the primary cooling box.
The secondary cooling mechanism comprises a secondary cooling box fixedly connected to the base, a plurality of semiconductor cooling plates are uniformly distributed in the secondary cooling box, pushing pieces for pushing part of the semiconductor cooling plates are arranged on the front surface and the rear surface of the secondary cooling box, and driving pieces for assisting the semiconductor cooling plates to push part of the semiconductor cooling plates are arranged on the front surface of the secondary cooling box.
According to the embodiment of the invention, the crushing piece comprises a connecting vertical shaft which is rotationally connected inside a primary cooling box, the axis of the connecting vertical shaft coincides with the axis of the primary cooling box, the bottom end of the circumferential surface of the connecting vertical shaft is rotationally connected with a rolling roller, the axis of the rolling roller is vertical to the axis of the connecting vertical shaft, one end of the rolling roller, which is far away from the connecting vertical shaft, is fixedly connected with a gear shaft, a plurality of groups of first mounting cavities are formed in the rolling roller along the axis direction, the number of each group of first mounting cavities is multiple and distributed in a circumferential array, an elastic telescopic crushing rod is fixedly connected in the first mounting cavities, and the telescopic end of the elastic telescopic crushing rod penetrates to the outer side of the rolling roller.
According to the embodiment of the invention, the bottom end of the connecting vertical shaft penetrates through the upper surface of the primary cooling box, the upper surface of the primary cooling box is fixedly connected with the first driving motor, and the top end of the connecting vertical shaft is fixedly connected with the output shaft of the first driving motor.
According to the embodiment of the invention, the auxiliary piece comprises a second installation cavity arranged in the bottom end of the primary cooling box, a fluted disc is fixedly connected in the second installation cavity, a sliding groove is formed in the inner circumferential surface of the primary cooling box and at a position corresponding to the second installation cavity, and flexible baffle plates are fixedly connected to the upper inner wall and the lower inner wall of the sliding groove.
According to the embodiment of the invention, the flexible baffle plates are meshed with the gear shaft, the shaft of the gear shaft penetrates through the sliding groove, and the upper end and the lower end of the two flexible baffle plates inside the sliding groove are attached to the circumferential surface of the shaft of the gear shaft and are in sliding connection.
According to the embodiment of the invention, the pushing piece on the front side comprises a plurality of evenly distributed connecting grooves formed in the front surface of the secondary cooling box, connecting columns are connected in the connecting grooves in a sliding mode, connecting cross rods are fixedly connected to the front surfaces of the connecting columns together, a plurality of elastic telescopic connecting rods are fixedly connected to the upper surface of the connecting cross rods, and the rear surface of the fixed end of each elastic telescopic connecting rod is fixedly connected with the secondary cooling box.
According to the embodiment of the invention, the opening positions of the plurality of connecting grooves correspond to the intervals of the plurality of semiconductor cooling plates in the secondary cooling box, and the rear surfaces of the connecting columns are fixedly connected with the corresponding semiconductor cooling plates.
According to the embodiment of the invention, the driving piece comprises a fixing frame fixedly connected to the front surface of the secondary cooling box and positioned below the connecting cross rod, the cam is rotatably connected to the front surface of the secondary cooling box and positioned on the inner side of the fixing frame, a second driving motor is fixedly installed on the fixing frame, and an output shaft of the second driving motor is fixedly connected with the cam.
The technical scheme of the invention is as follows: 1. the primary cooling mechanism breaks up the agglomerated clinker when cooling the clinker obtained by calcination, so that the clinker is heated more fully in the cooling process, the cooling efficiency of the clinker is improved, the energy loss is reduced, and meanwhile, the hot air generated in the cooling process is conveyed to the calcination equipment again to preheat the raw meal, so that the energy utilization rate is higher.
2. When the clinker obtained by calcination is subjected to secondary cooling by the secondary cooling mechanism, the clinker is crushed into particles with smaller diameter again, so that the clinker can be cooled more rapidly, and the grinding efficiency is higher when the cooled clinker is ground, and the production efficiency of the clinker is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for preparing portland cement clinker using mineral waste provided by the invention.
Fig. 2 is a schematic perspective view of a cooling apparatus in the method for preparing portland cement clinker using mineral waste according to the present invention.
FIG. 3 is a schematic diagram of a primary cooling mechanism provided by the present invention.
Fig. 4 is a schematic view in partial cross-section of fig. 3 provided by the present invention.
Fig. 5 is an enlarged view of portion a of fig. 4 provided by the present invention.
Fig. 6 is a right side cross-sectional view of the laminating roller structure provided by the present invention.
FIG. 7 is a schematic diagram of a secondary cooling mechanism provided by the present invention.
Fig. 8 is a schematic view in partial cross-section of fig. 7 provided by the present invention.
FIG. 9 is a second schematic diagram of a secondary cooling mechanism provided by the present invention.
Reference numerals:
1. discharging a hopper; 2. a primary cooling mechanism; 3. a mounting bracket; 4. a secondary cooling mechanism; 5. a base; 21. a first-stage cooling box; 22. a first connection pipe; 23. a second connection pipe; 24. a crushing member; 25. an auxiliary member; 41. a secondary cooling tank; 42. a semiconductor cooling plate; 43. a driving member; 44. a pushing member; 241. connecting the vertical shaft; 242. a roller; 243. a gear shaft; 244. a first mounting cavity; 245. an elastically telescopic crushing rod; 251. a flexible baffle; 252. a sliding groove; 253. fluted disc; 254. a second mounting cavity; 431. a fixing frame; 432. a second driving motor; 433. a cam; 441. an elastic telescopic connecting rod; 442. a connecting groove; 443. connecting the cross bars; 444. and (5) connecting the columns.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 and 2, a method for preparing portland cement clinker using mineral waste, comprising the steps of:
s1, preparing raw materials: the needed silica slag and copper slag are prepared, then the silica slag and the copper slag are respectively crushed, the silica slag (silicon content is 90%) with low crystalline silicon is adopted to replace the original sandstone, and the copper slag is adopted to replace converter slag, so that the combustibility of raw materials can be improved.
S2, mixing raw materials: and (3) uniformly mixing the crushed silica slag and copper slag in the step (S1) according to the proportion of ingredients to obtain a mixture.
S3, grinding raw materials: the mixture obtained in step S2 is ground again to further refine the particles and increase the surface area.
S4, preparing a mineralizer: the yellow phosphorus slag and the calcium fluoride slag are mixed in a two-to-one ratio mode to prepare the mineralizer.
S5, firing raw materials: and (3) uniformly mixing the ground mixture obtained in the step (S3) and the mineralizer obtained in the step (S4) according to a proportion of ingredients, then placing the mixture into a kiln for calcination to form clinker, and adopting high-heat-value coal as fuel (the received base heat value is more than 5500kca l) to properly raise the calcination temperature of the kiln head on the basis of the original material.
S6, cooling clinker: and (5) conveying the clinker obtained in the step (S5) into cooling equipment for cooling to obtain cooled clinker.
S7, grinding clinker; grinding the cooling clinker obtained in the step S6 to obtain the cement clinker with proper fineness.
The cooling device in the step S6 comprises a base 5, a secondary cooling mechanism 4 for performing secondary cooling on clinker is arranged on the upper surface of the base 5, and a mounting bracket 3 is arranged on the secondary cooling mechanism 4.
The primary cooling mechanism 2 is used for primary cooling of clinker, the primary cooling mechanism 2 is arranged on the inner side of the mounting bracket 3, and the primary cooling mechanism 2 is provided with a discharging hopper 1 used for conveying the calcined clinker.
As shown in fig. 3, the primary cooling mechanism 2 comprises a primary cooling box 21 fixedly connected to the inner side of the mounting bracket 3, two symmetrically arranged second connecting pipes 23 for recovering hot air are connected to the upper surface of the primary cooling box 21 in a penetrating manner, a plurality of first connecting pipes 22 for conveying cold air are distributed on the circumferential surface of the primary cooling box 21 in a circumferential array manner, crushing pieces 24 for crushing agglomerated clinker are arranged in the primary cooling box 21, and auxiliary pieces 25 for being matched with the crushing pieces 24 to crush are arranged at the bottom end of the primary cooling box 21.
As shown in fig. 4 and 6, the crushing member 24 includes a connecting vertical shaft 241 rotatably connected to the inside of the primary cooling tank 21, the axis of the connecting vertical shaft 241 coincides with the axis of the primary cooling tank 21, the bottom end of the circumferential surface of the connecting vertical shaft 241 is rotatably connected with a rolling roller 242, the axis of the rolling roller 242 is perpendicular to the axis of the connecting vertical shaft 241, one end of the rolling roller 242 away from the connecting vertical shaft 241 is fixedly connected with a gear shaft 243, multiple groups of first mounting cavities 244 are formed in the inside of the rolling roller 242 along the axis direction, the number of each group of first mounting cavities 244 is multiple and distributed in a circumferential array, the inside of each first mounting cavity 244 is fixedly connected with an elastic telescopic crushing rod 245, the telescopic end of the elastic telescopic crushing rod 245 penetrates to the outside of the rolling roller 242, the bottom end of the connecting vertical shaft 241 penetrates the upper surface of the primary cooling tank 21, the upper surface of the primary cooling tank 21 is fixedly connected with a first driving motor, and the top end of the connecting vertical shaft 241 is fixedly connected with the output shaft of the first driving motor.
As shown in fig. 4 and 5, the auxiliary member 25 includes a second mounting cavity 254 disposed inside the bottom end of the primary cooling tank 21, a fluted disc 253 is fixedly connected to the inside of the second mounting cavity 254, a sliding groove 252 is formed on the inner circumferential surface of the primary cooling tank 21 and at a position corresponding to the second mounting cavity 254, flexible baffle plates 251 are fixedly connected to the upper and lower inner walls of the sliding groove 252, the flexible baffle plates 251 are meshed with the gear shaft 243, the shaft of the gear shaft 243 penetrates through the sliding groove 252, and the upper and lower ends of the two flexible baffle plates 251 inside the sliding groove 252 are attached to and slidably connected with the circumferential surface of the shaft of the gear shaft 243.
When the clinker cooling device is specifically used, when the clinker obtained by calcination begins to be cooled, the clinker enters the inside of the first-stage cooling box 21 from two positions above the first-stage cooling box 21 through the lower hopper 1, cooling air enters the inside of the first-stage cooling box 21 through the first connecting pipe 22, heated hot air outside exhaust fan conveys hot air to calcination equipment through the second connecting pipe 23 to be secondarily utilized, meanwhile, the first driving motor drives the grinding roller 242 to rotate in the inside of the first-stage cooling box 21 through the connecting vertical shaft 241, the grinding roller 242 is driven to rotate on the connecting vertical shaft 241 along with the gear shaft 243 attached to the fluted disc 253 in the process of rotating the connecting vertical shaft 241, meanwhile, the gear shaft 243 slides in the inside of the sliding groove 252, when the grinding roller 242 rotates along with the rotating process of the grinding roller 242, the grinding roller 242 is matched with the rotating to crush some caked clinker, meanwhile, the elastic telescopic crushing rod 245 contracts when passing through the bottom end of the first-stage cooling box 21, the elastic crushing rod 245 stretches into the inside of the cooling box 21 under the action of the self-elastic crushing rod 245 when passing through the leak hole of the bottom end of the first-stage cooling box 21, the elastic crushing rod 245 stretches into the inside of the clamping hole 243 to slide in the inside of the cooling box 252 along with the connecting vertical shaft 241, and the inside of the cooling plate 243 can normally slide in the inside of the cooling box 252, and the inside of the cooling box is prevented from entering the inside of the cooling box 252 to normally, and the inside of the cooling box is guaranteed to slide in the inside of the cooling box is guaranteed.
As shown in fig. 7, the secondary cooling mechanism 4 includes a secondary cooling tank 41 fixedly connected to the base 5, a plurality of semiconductor cooling plates 42 are uniformly distributed inside the secondary cooling tank 41, pushing members 44 for pushing part of the semiconductor cooling plates 42 are provided on both front and rear surfaces of the secondary cooling tank 41, and a driving member 43 for assisting the semiconductor cooling plates 42 in pushing part of the semiconductor cooling plates 42 is provided on the front surface of the secondary cooling tank 41.
As shown in fig. 8 and 9, taking the front side pushing member 44 as an example, the front side pushing member 44 includes a plurality of evenly distributed connecting grooves 442 formed on the front surface of the secondary cooling box 41, connecting columns 444 are slidably connected in the connecting grooves 442, connecting cross bars 443 are fixedly connected to the front surfaces of the connecting columns 444, a plurality of elastic telescopic connecting rods 441 are fixedly connected to the upper surfaces of the connecting cross bars 443, the rear surfaces of the fixed ends of the elastic telescopic connecting rods 441 are fixedly connected with the secondary cooling box 41, the positions of the plurality of connecting grooves 442 are spaced from and correspond to the plurality of semiconductor cooling plates 42 in the secondary cooling box 41, and the rear surfaces of the connecting columns 444 are fixedly connected with the corresponding semiconductor cooling plates 42.
As shown in fig. 7 and 8, the driving member 43 includes a fixing frame 431 fixedly connected to the front surface of the secondary cooling tank 41 and located below the connecting cross bar 443, a cam 433 is rotatably connected to the front surface of the secondary cooling tank 41 and located inside the fixing frame 431, a second driving motor 432 is fixedly mounted on the fixing frame 431, and an output shaft of the second driving motor 432 is fixedly connected to the cam 433.
When the clinker falls from the bottom end of the first-stage cooling box 21, the clinker enters the second-stage cooling box 41, then the clinker falls downwards from gaps between the plurality of semiconductor cooling plates 42, the semiconductor cooling plates 42 perform secondary cooling on the clinker in the process that the clinker falls from the gaps between the two semiconductor cooling plates 42, the clinker is cooled in a scattered passing mode, multiple faces of the clinker can be simultaneously cooled, the cooling speed of the clinker with thinner stacking thickness is higher, the energy is saved, the second driving motor 432 drives the cam 433 to rotate when the clinker passes through the semiconductor cooling plates 42, the cam 433 is matched with the self elastic force of the elastic telescopic connecting rod 441 to push the connecting cross rod 443 to reciprocate up and down in the rotating process, the connecting cross rod 443 passes through the connecting groove 442 at intervals to drive the semiconductor cooling plates 42 to move up and down, the semiconductor cooling plates 42 in the single-number position in the second-stage cooling box 41 are always fixed along with the connecting column 444, the clinker is simultaneously cooled, the clinker is simultaneously stacked between the two semiconductor cooling plates 42, the clinker is cooled in the cooling speed, the clinker is more rapid in the cooling speed, the clinker is saved, the clinker is cooled down by the grinding mechanism, the grinding efficiency is not carried out until the clinker is more than the grinding and cooled down in the grinding process.
Working principle: when the clinker grinding device is specifically used, firstly, the calcined clinker is conveyed to the inside of the first-stage cooling box 21 through the blanking hopper 1, cold air is conveyed to the inside of the first-stage cooling box 21 through the first connecting pipe 22 to perform first-stage cooling on the clinker in the first-stage cooling box 21, meanwhile, after the clinker enters the inside of the first-stage cooling box 21, the clinker in the first-stage cooling box 21 is crushed through the crushing piece 24 matched with the auxiliary piece 25, so that the clinker can be fully contacted with cooling air, meanwhile, the air heated by the clinker in the first-stage cooling box 21 is conveyed to calcining equipment through the second connecting pipe 23, raw meal can be preheated, the utilization rate of energy sources can be improved, the cost is saved, the clinker subjected to first-stage cooling falls into the inside of the second-stage cooling box 41 from the bottom end of the first-stage cooling box 21, and falls down from gaps between a plurality of semiconductor cooling plates 42 after the clinker enters the second-stage cooling box 41, the clinker is subjected to second-stage cooling through the semiconductor cooling plates 42 when the clinker passes through the semiconductor cooling plates 42, meanwhile, the driving piece 43 drives the clinker to move the semiconductor cooling plates 42 in the second-stage cooling plates in the second-stage cooling mode through the pushing piece 44 at intervals, the clinker can be more quickly ground into the clinker, and the clinker can be ground into clinker with a smaller diameter when the clinker is crushed, and the clinker can be more quickly cooled down, and the clinker can be more conveniently and ground.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "first," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second", "first", "second" may include at least one such feature, either explicitly or implicitly. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (8)
1. A method for preparing silicate cement clinker by using mineral waste, which is characterized by comprising the following steps: the method comprises the following steps:
s1, preparing raw materials: preparing the required silicon slag and copper slag, and then respectively crushing the silicon slag and the copper slag;
s2, mixing raw materials: uniformly mixing the crushed silica slag and copper slag in the step S1 according to the proportion of ingredients to obtain a mixture;
s3, grinding raw materials: grinding the mixture obtained in the step S2 again to further refine particles and increase the surface area;
s4, preparing a mineralizer: the yellow phosphorus slag and the calcium fluoride slag are subjected to double doping in a two-to-one ratio mode to prepare a mineralizer;
s5, firing raw materials: uniformly mixing the ground mixture obtained in the step S3 and the mineralizer obtained in the step S4 according to the proportion of the ingredients, and then placing the mixture into a kiln for calcination to form clinker;
s6, cooling clinker: conveying the clinker obtained in the step S5 into cooling equipment for cooling to obtain cooled clinker;
s7, grinding clinker; grinding the cooling clinker obtained in the step S6 to obtain cement silicate clinker with proper fineness;
the cooling equipment related to the step S6 comprises a base (5), wherein a secondary cooling mechanism (4) for performing secondary cooling on clinker is arranged on the upper surface of the base (5), and a mounting bracket (3) is arranged on the secondary cooling mechanism (4);
the clinker calcination device comprises a primary cooling mechanism (2) for primary cooling of clinker, wherein the primary cooling mechanism (2) is arranged on the inner side of a mounting bracket (3), and a discharging hopper (1) for conveying the calcined clinker is arranged on the primary cooling mechanism (2);
the primary cooling mechanism (2) comprises a primary cooling box (21) fixedly connected to the inner side of the mounting bracket (3), two second connecting pipes (23) which are symmetrically arranged and used for recycling hot air are connected to the upper surface of the primary cooling box (21) in a penetrating manner, a plurality of first connecting pipes (22) used for conveying cold air are distributed on the circumferential surface of the primary cooling box (21) in a circumferential array manner, crushing pieces (24) used for crushing agglomerated clinker are arranged in the primary cooling box (21), and auxiliary pieces (25) used for being matched with the crushing pieces (24) to crush are arranged at the bottom end of the primary cooling box (21);
the secondary cooling mechanism (4) comprises a secondary cooling box (41) fixedly connected to the base (5), a plurality of semiconductor cooling plates (42) are uniformly distributed in the secondary cooling box (41), pushing pieces (44) for pushing part of the semiconductor cooling plates (42) are arranged on the front surface and the rear surface of the secondary cooling box (41), and driving pieces (43) for assisting the semiconductor cooling plates (42) to push part of the semiconductor cooling plates (42) are arranged on the front surface of the secondary cooling box (41).
2. A method for preparing portland cement clinker using mineral waste according to claim 1, wherein: crushing piece (24) are including rotating connection at inside connection vertical scroll (241) of one-level cooling tank (21), the axis of connection vertical scroll (241) is the coincidence with the axis of one-level cooling tank (21), the circumference bottom of connection vertical scroll (241) rotates and is connected with rolls roller (242), the axis of rolls roller (242) is perpendicular with the axis of connection vertical scroll (241), the one end fixedly connected with gear shaft (243) of connecting vertical scroll (241) is kept away from to rolls roller (242), multiunit first installation cavity (244) have been seted up along the axis direction to roll the inside of roller (242), every group the quantity of first installation cavity (244) is a plurality of and is circumference array distribution, the inside fixedly connected with flexible broken pole (245) of first installation cavity (244), the flexible end of flexible broken pole (245) runs through to the outside of rolls roller (242).
3. A method for preparing portland cement clinker using mineral waste according to claim 2, wherein: the bottom of the connecting vertical shaft (241) penetrates through the upper surface of the primary cooling box (21), a first driving motor is fixedly connected to the upper surface of the primary cooling box (21), and the top of the connecting vertical shaft (241) is fixedly connected with an output shaft of the first driving motor.
4. A method for preparing portland cement clinker using mineral waste according to claim 3, wherein: the auxiliary piece (25) comprises a second installation cavity (254) arranged inside the bottom end of the primary cooling box (21), a fluted disc (253) is fixedly connected inside the second installation cavity (254), a sliding groove (252) is formed in the inner circumferential surface of the primary cooling box (21) and at a position corresponding to the second installation cavity (254), and flexible baffle plates (251) are fixedly connected to the upper inner wall and the lower inner wall of the sliding groove (252).
5. The method for preparing portland cement clinker by using mineral waste according to claim 4, wherein: the flexible baffle plates (251) are meshed with the gear shaft (243), the shaft of the gear shaft (243) penetrates through the sliding groove (252), and the upper end and the lower end of the two flexible baffle plates (251) inside the sliding groove (252) are attached to the circumferential surface of the shaft of the gear shaft (243) and are in sliding connection.
6. A method for preparing portland cement clinker using mineral waste according to claim 1, wherein: the front side pushing piece (44) comprises a plurality of evenly distributed connecting grooves (442) formed in the front surface of the secondary cooling box (41), connecting columns (444) are connected to the inside of each connecting groove (442) in a sliding mode, a plurality of connecting cross rods (443) are fixedly connected to the front surfaces of the connecting columns (444) together, a plurality of elastic telescopic connecting rods (441) are fixedly connected to the upper surfaces of the connecting cross rods (443), and the rear surfaces of fixed ends of the elastic telescopic connecting rods (441) are fixedly connected with the secondary cooling box (41).
7. A method for preparing portland cement clinker using mineral waste according to claim 6, wherein: the opening positions of the plurality of connecting grooves (442) are corresponding to the intervals of the plurality of semiconductor cooling plates (42) in the secondary cooling box (41), and the rear surfaces of the connecting columns (444) are fixedly connected with the corresponding semiconductor cooling plates (42).
8. A method for preparing portland cement clinker using mineral waste according to claim 6, wherein: the driving piece (43) comprises a fixing frame (431) fixedly connected to the front surface of the secondary cooling box (41) and located below the connecting cross rod (443), a cam (433) is rotatably connected to the front surface of the secondary cooling box (41) and located on the inner side of the fixing frame (431), a second driving motor (432) is fixedly installed on the fixing frame (431), and an output shaft of the second driving motor (432) is fixedly connected with the cam (433).
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| WO1999054044A1 (en) * | 1998-04-18 | 1999-10-28 | Cemag Gmbh | Method and device for fine grinding mineral and non-mineral substances |
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| CN214599625U (en) * | 2021-03-15 | 2021-11-05 | 葛志 | Cement vertical mill for grinding cement raw materials |
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| CN114349375A (en) * | 2022-01-26 | 2022-04-15 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for firing portland cement by utilizing magnetite preselected waste rock |
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| SU1135490A1 (en) * | 1983-05-06 | 1985-01-23 | Всесоюзный Научно-Исследовательский Институт Цементного Машиностроения | Vertical roller mill drive |
| WO1999054044A1 (en) * | 1998-04-18 | 1999-10-28 | Cemag Gmbh | Method and device for fine grinding mineral and non-mineral substances |
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