CN101907404A - Planar rectangular energy-saving cooler and cooling process thereof - Google Patents
Planar rectangular energy-saving cooler and cooling process thereof Download PDFInfo
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- CN101907404A CN101907404A CN2009100118873A CN200910011887A CN101907404A CN 101907404 A CN101907404 A CN 101907404A CN 2009100118873 A CN2009100118873 A CN 2009100118873A CN 200910011887 A CN200910011887 A CN 200910011887A CN 101907404 A CN101907404 A CN 101907404A
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Abstract
The invention relates to a planar rectangular energy-saving cooler and a cooling process thereof. The cooler is characterized in that the cooler is arranged on a horizontal plane under a single-tooth roll at the discharge end of a sintering machine; a vehicle return machine of the cooler is arranged in parallel to the cooler by vertically arranging two ferry vehicles rails respectively at the front and tail of the cooler; a discharge funnel and a concrete duct with a separator are arranged under the rail of a cooling trolley; a blower is arranged close to the concrete duct, and is communicated with the concrete duct through an air pipe; and a front ferry vehicle and a tail ferry vehicle are respectively arranged on the front ferry vehicle rail and the tail ferry vehicle rail on two ends of the cooler to form a planar rectangular circulating mechanism. The cooling process changes the conventional step-by-step sintering air extract cooling mode, and adopts the blow cooling mode which is more reasonable, more scientific and more energy-saving to cool agglomerate. The cooler has the advantages of simple equipment structure, small floor area, low cost and good cooling effect, and the adoption of the blow cooling mode can effectively reduce energy consumption.
Description
Technical field
The invention belongs to the agglomerating plant technical field, particularly a kind of planar rectangular energy-saving cooler and process for cooling thereof.
Background technology
The heat sinter temperature of sintering machine production can reach about 800～900 ℃, need cool off, and the sinter cooler that uses both at home and abroad roughly has following three kinds: 1, straight line cooler (abbreviation is with cold) at present.2, circular cooler (it is cold to be called for short ring), above-mentioned two kinds are air blast technology.3, exhausting cooling (the abbreviation machine is cold) on sintering machine.These coolers respectively have characteristics, belt-cooling machine is because of being three-dimensional circulation, weight of equipment is heavy, large diameter head, tail star-wheel need be arranged, and accuracy of manufacture requirement is high, even expensive flexible transmission is arranged, the chassis effective rate of utilization only reaches 50%, the central cooler floor space is big, and the sintering machine factory building is increased, and is difficult for configuration.Machine is cold owing to be exhausting cooling exhaust temperature height, needs to adopt high-effective dust-removing equipment and big blower fan, so make the various complexity of equipment, the energy consumption height.
At present commonly used also have a kind of step-by-step movement sintering machine, and it is that sintering and cooling are united two into one, and this step-by-step movement sintering machine one-time investment is lower, but equipment dispose and the selection of operating type on have a major defect:
The one: before the machine, tail chassis method of shipment all is the form of selecting vehicular to go and back running, holding time is long, has limited the speed of sintering machine;
The 2nd: because the exhausting type of cooling is adopted in cooling, exhausting process for cooling difficulty aspect the solution environmental pollution is less, but, the exhausting cooling just can make cooling air pass through sintering feed because must disposing the blower fan of high negative power, this just requires air exhauster than the more powerful motor of air blast configuration, it is reported, scale is 1,000,000 tons/year a step up-to-date style sintering machine, exhausting cooling adopts the power consumption of the air blast type of cooling to exceed about 1,166 ten thousand degree every year than equal specification, by every degree electricity charge is 0.7 yuan of calculating, then every year ten thousand yuan of cold then many expenditure 1166 * 0.7=816.2 of machine of the electricity charge only, this does not also comprise because the expense of material consumption that high-temp waste gas brings and equipment control maintenance.
The 3rd: the step-by-step movement sintering machine adopts the exhausting type of cooling why can not adopt the reason of the air blast type of cooling: the one, at the down draft sintering of sintering stage employing, so sintering deposit is denser after sintering is finished on the chassis, adopt the air blast cooling to increase air blast pressure greatly.Former therefore two, material sintering from top to down on the pallet, when entering into sintering end point, the upper strata sintering deposit cools off, in up air blast, chilled sintering deposit is heated up again, not only consume lot of energy, and strengthened the air quantity of air blast, consumed more electric energy, this is that SINTERING PRODUCTION technology institute is unallowed, also is that present step-by-step movement sintering machine does not adopt air-blast cooled major reason.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, energy consumption is low, good cooling results, the planar rectangular energy-saving cooler that floor space is little.
A further object of the present invention provides a kind of technology that adopts planar rectangular energy-saving cooler that sintering deposit is cooled off.
The object of the present invention is achieved like this, it comprises by the cooling chassis, the cooling bench Car Track, go-cart before the machine of cooling bench Car Track front end, the cooler that the tail hydro-mechanical tipper of go-cart liquid station and cooling bench Car Track end is formed, it is characterized in that described cooler is located at the Horizon place, below of sintering machine delivery end monodentate roller, below described cooling bench Car Track, be provided with the concrete air channel of unloading grey funnel and band dividing plate, air blast is located at by the concrete air channel, and be communicated with the concrete air channel by airduct, form the air blast cooling section, above air blast cooling section chassis, be provided with seal closure, the chassis carriage-returning track of carriage return machine and the cooling bench Car Track of cooler be arranged in parallel, crossing Car Track and tail before the machine crosses Car Track and vertically is arranged vertically two ends at cooler cooling bench Car Track and carriage return machine trolley carriage-returning track, before crossing car and tail before the machine and crossing the machine that car places two ends respectively, tail crosses on the Car Track, form a planar rectangular cycling mechanism, before described machine, cross car and tail and cross and be respectively equipped with track on the car.
In described grey funnel and the concrete air channel of unloading, be to be starting point with the material inlet, for unloading grey funnel, remainder to discharge gate is the concrete air channel to two chassis of front end apart from part.
Crossing Car Track and tail before described machine crosses and is respectively equipped with contact-making switch on the Car Track.
On the chassis carriage-returning track of described carriage return machine, be provided with the Vidacare corp that the elevator machine of pulling a cart is connected with the elevator machine of pulling a cart therewith.
Air blast in the setting of described air blast section is the 3-5 platform, and its blower export directly is blown in the concrete air channel by pipeline.
A kind of process for cooling that adopts planar rectangular energy-saving cooler is characterized in that comprising the following steps:
1) charging hopper of the hot ore deposit of sintering through entering cooler front end top after the fragmentation of sintering machine delivery end monodentate roller feeds on the cooling chassis again, the cooling chassis is in a step one step-type traveling process that stops, be pushed to length by length and advance, its fltting speed is: 1.0～1.8min/m, when chassis is pulled to the air blast section, air blast is started working, and its blast pressure is 2500～3500Pa, and air quantity is: 180000～500000m
3/ h, cold wind blasts cold wind and passes the chassis grate plate from the cooling pallet bottom, penetrates sinter bed, progressively finishes the sintering deposit cooling procedure, sintering deposit is cooled to＜100-120 ℃,
2) the cooling chassis of releasing from cooling section enters on the parking track of overturn platform of tail hydro-mechanical tipper, and the overturning operation begins immediately, starts the hydraulic cylinder on the tippler, and the tippler upset is all laid down cooled sintering deposit,
3) the empty chassis after the discharging is sent to tail and crosses on the car, when moving to tail and crossing the Car Track end, its tail crosses track on the car and the chassis carriage-returning track of carriage return machine joins, empty chassis enters the chassis carriage-returning track, empty chassis passes through elevator carriage return machine, steel cable at the carriage return machine, before proceeding to machine, carriage-returning track crosses Car Track successively, when before empty chassis moves to machine, crossing the Car Track end, crossing the car tracks before carriage-returning track on the carriage return this moment machine and the machine joins, this space-time chassis crosses car before by machine and transports cooler back, promptly finishes a circulation.
Described trolley movement speed is: 1.5min/m, blast pressure are 3000Pa, and air quantity is: 350000m3/h, its cooling sintering deposit is to＜110 ℃.
Advantage of the present invention is:
1, planar rectangular energy-saving cooler of the present invention, sintering stage and cooling section are separated, cooler is located at the Horizon place, below of sintering machine delivery end monodentate roller, this cooler is arranged in the open, need not factory building, and adopted planar rectangular to cross car formula carriage return mode, and can make the sintering machine plant area of same specification reduce 50%, also greatly reduce the expense that constructs the factory buildings simultaneously.
2, because the cooling chassis of invention is the planar rectangular circulation, and do not have huge and the complicated mechanical driving member, it lacks than the quantity that the band cooling pallet needs, and can improve the utilization rate of chassis to greatest extent.Littler than the cold floor space of ring, and easily configuration.
3, the present invention compares with the step-by-step movement sintering exhausting type of cooling, has adopted more reasonable, more science, the more energy-conservation air blast type of cooling, and this air blast type of cooling is the cooling effectiveness height not only, cool time is short, and the power consumptive province, cooling cost is low, and this is a significant advantage of the present invention; Save the energy up to more than 50% than the exhausting type of cooling, and open-air the layout, do not need factory building, and construction cost is low, build short construction period, it is fast to go into operation.
4, equipment of the present invention is light, and chassis directly overlays on the concrete air channel, so cost is very low, and all drivings all are motor-driven or hydraulic pressure, and corresponding stroke and speed regulation and control both can have been adopted general artificial electric control operation easily, also can realize the microcomputer automation mechanized operation.
Description of drawings
Fig. 1 is the structural representation of invention planar rectangular energy-saving cooler.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is that the B-B of Fig. 1 is to view.
The specific embodiment
The specific embodiment below in conjunction with the description of drawings invention.
Referring to accompanying drawing 1, Fig. 2, planar rectangular energy-saving cooler of the present invention, it comprises by cooling chassis 4, the cooling bench Car Track, go-cart 1 before the machine of cooling bench Car Track front end, the cooler that the tail hydro-mechanical tipper 15 of go-cart liquid station 2 and cooling bench Car Track end is formed, it is characterized in that described cooler is located at the one flat place, below of sintering machine delivery end monodentate roller, below described cooling bench Car Track 17, be provided with the concrete air channel 13 of unloading grey funnel 12 and band dividing plate, it is other that air blast 14 is located at concrete air channel 13, and be communicated with concrete air channel 13 by airduct, form the air blast cooling section, above air blast cooling section chassis, be provided with seal closure 16, the chassis carriage-returning track 7 of carriage return machine be arranged in parallel with the cooling bench Car Track 17 of cooler, crossing Car Track 11 and tail before the machine crosses Car Track 6 and vertically is arranged vertically two ends at cooler cooling bench Car Track 17 and carriage return machine trolley carriage-returning track 7, before crossing car 3 and tail before the machine and crossing the machine that car 5 places two ends respectively, tail crosses on the Car Track, form a planar rectangular cycling mechanism, before described machine, cross car 3 and tail and cross on the car 5 and be respectively equipped with track.
The present invention is to be starting point with the material inlet in described grey funnel 12 and the concrete air channel 13 of unloading, and for unloading grey funnel 12, remainder to discharge gate is concrete air channel 13 to two chassis of front end apart from part.
The present invention crosses Car Track 11 and tail and crosses and be respectively equipped with contact-making switch 10 on the Car Track 6 before described machine.
The present invention is provided with the elevator Vidacare corp that machine 8 is connected with the elevator machine of pulling a cart therewith of pulling a cart on the chassis carriage-returning track 7 of described carriage return machine, referring to accompanying drawing 3.
The present invention is the 3-5 platform at the air blast 14 that described air blast section is provided with, and its air blast 14 outlets directly are blown into 13 li in concrete air channel by pipeline.
Adopt the process for cooling of planar rectangular energy-saving cooler of the present invention, it is characterized in that comprising the following steps:
1) charging hopper of the hot ore deposit of sintering through entering cooler front end top after the fragmentation of sintering machine delivery end monodentate roller feeds on the cooling chassis 4 again, chassis 4 is in a step one step-type traveling process that stops, be pushed to length by length and advance, its fltting speed is: 1.0～1.8min/m, when the cooling chassis is pulled to the air blast section, air blast 14 is started working, and its blast pressure is 2500～3500Pa, and air quantity is: 180000～500000m
3/ h, cold wind blasts cold wind from cooling chassis 4 bottoms and passes the chassis grate plate, penetrates sinter bed, progressively finishes the sintering deposit cooling procedure, sintering deposit is cooled to＜100-120 ℃,
2) the cooling chassis of releasing from cooling section 4 enters on the parking track of overturn platform of tail hydro-mechanical tipper 15, and the overturning operation begins immediately, starts the hydraulic cylinder on the tippler, and the tippler upset is all laid down cooled sintering deposit,
3) the empty chassis after the discharging is sent to tail and crosses on the car 5, when moving to tail and crossing Car Track 6 ends, its tail crosses track on the car and the chassis carriage-returning track 7 of carriage return machine joins, empty chassis enters chassis carriage-returning track 7, empty chassis passes through elevator carriage return machine 8, steel cable 9 at the carriage return machine, before proceeding to machine, carriage-returning track crosses Car Track 11 successively, when before empty chassis moves to machine, crossing Car Track 11 ends, crossing car tracks 11 before carriage-returning track 7 on the carriage return this moment machine and the machine joins, this space-time chassis crosses car 3 before by machine and transports cooler back, promptly finishes a circulation.
When described cooling chassis movement velocity is: 1.5min/m, blast pressure are 3000Pa, and air quantity is: 350000m
3/ h can be cooled to sintering deposit＜110 ℃.
The operation principle of planar rectangular energy-saving cooler of the present invention is:
1, car puller go-cart operation: generally adopt existing go-cart mechanism, this machine is a hydraulic-driven, form by oil cylinder and Hydraulic Station, adopt the single cylinder double-guide mechanism, lay on the preceding platform of cooler, car puller effective travel of the present invention is designed to 2m, stepping period time 2.5min, its go-cart operation is to push crossing the chassis that car sends here before the machine, makes chassis accept the heat sinter that sintering machine unloads, push away a chassis, whenever pushing away once is a step (i.e. go-cart circulation) at every turn.
2, cross car before the machine: it is by Motor Drive and has the dolly of platform, and its function is that each one of the empty chassis on the loop is extradited to cooler, crosses car and is provided with and crosses Car Track, and be provided with contact-making switch on the both sides of track.
3, cooling chassis: form by wheel, breast board, grate plate, rolling bearing etc.
4, tail crosses car: tail crosses car to have to overturn and unloads the ore deposit, and will unload the double function that empty chassis behind the ore deposit is extradited the carriage return section, and this car has overturning mechanism, overturning mechanism is a hydraulic-driven, adopts two oil cylinders to work simultaneously, and Hydraulic Station is located at and crosses on the car, for guaranteeing to overturn steadily, system is provided with back pressure.Two cylinder drives, and except that there was flow divider control in system, by the effect of the bigger overturning frame mechanical synchronization of stiffness, guaranteeing its synchronous working, tail crossed that to cross the car segment structure before the structure of car section and the machine basic identical.
5, air blast: be used for heat of cooling sintering deposit, the platform number that its air blast is required, blast, parameters such as air quantity are to calculate according to concrete project scale to choose.Blower export directly is blown into by pipeline in the air channel of xoncrete structure, and wind penetrates sinter bed and cools off by the chassis grate plate, make the sintering deposit temperature reduce to＜100～120 ℃.
6, the carriage return machine that has hoisting mechanism: main hoist engine, hook, steel wire rope, the directive wheel of forming, parallel upper supporting roller, contact-making switch etc., equally with prior art operate by control device, elevator is provided with multiple speed as required, is selected arbitrarily by production process. see B～B sectional drawing of Fig. 3 for details.
Production process of the present invention is:
Before crossing car and tail before the machine that is loaded with chassis and crossing car and rest in machine respectively, behind the tail assigned position, car puller is under the situation of Lubricating-oil Station, pump start, advance the chassis that crosses before the machine of being parked on the car, stroke 2m, the time, about 2.5min pushed away once, after finishing above-mentioned task, cross car before the machine and turn back on the line of pulling a cart, wait for the arrival of second chassis.Heat sinter on the chassis advances under the effect of car puller, the cold wind that blasts penetrates the bed of material and cools off, along with chassis moves forward, the temperature of sintering deposit on chassis descends gradually, overturn when unloading the ore deposit to tail, the cooling task has promptly been finished in the temperature of sintering deposit＜120 °, is about one hour cool time.
When the chassis that crosses before the car puller kickoff mechanism on the car, corresponding tail crosses the chassis on the car, overturns and unloads the ore deposit, unloads the ore deposit time to be about 2.5min, unsnatches after the ore deposit crosses car and reset, and carries the sky chassis and transports to the carriage return machine and pull a cart on the line.Before the hoist engine of the line of pulling a cart is adjourned to machine by steel cable with empty chassis, cross on the car, be transported to cooler by crossing car before the machine again, prepare to push, promptly finish a circulation.
This circulation must the interlocking coordinated operation.Corresponding stroke and speed controlling element all are equipped with in the driving of each parts of this machine, can adopt general electrical control operation, also can realize microcomputer control.
Adopt planar rectangular energy-saving cooler of the present invention and be with cold, cold, cold qualitative being compared as follows of machine of ring with the sintering plant of producing 1000000 tons per year:
The every index of planar rectangular energy-saving cooler of the present invention as can be seen from the table all is better than various coolers, particularly compares with machine is cold, and it is cold all to be better than machine at aspects such as weight of equipment, cost, energy consumption, processing and manufacturing difficulty or ease.Its main cause is that the cold technology of machine is the exhausting cooling, because the exhausting cooling, and sintered discharge gas temperature height, the cold a lot of complex device of increase that need of machine, producing 1000000 tons of sintering plants per year with design is example, if the employing machine need increase when cold.(1) gravitational precipitator is one, and weight is about 100t.(2) 220m
2About 530t of weight of horizontal pair of chamber three electric field electric cleaners.(3) air quantity is 12000m
3One of/min is high temperature resistant centrifugal exhauster.(4) large-scale muffler is one, the about 30t of weight.(5) increase by one in chimney.(6) dust transportation system and platform, support, pipeline etc.Only increase air exhauster this, the power of motor of air exhauster is at least 2500kw, and planar rectangular energy-saving cooler power mostly is 660kw most, two differ 2500-660=1840kw, about 1,166 ten thousand degree of 1840kw power consumption, by every degree electricity charge is 0.7 yuan of calculating, then every year ten thousand yuan of cold then many expenditure 1166 * 0.7=816.2 of machine of the electricity charge only.
The present invention invests little, and construction cost is low, and energy consumption is low, pollution-free, builds short construction period, and it is fast to go into operation,, operation costs are low, therefore are very suitable for applying in newly-built or the step-by-step movement sintering machine transformation of having built up.
Claims (7)
1. planar rectangular energy-saving cooler, it comprises by the cooling chassis, the cooling bench Car Track, go-cart before the machine of cooling bench Car Track front end, the cooler that the tail hydro-mechanical tipper of go-cart liquid station and cooling bench Car Track end is formed, it is characterized in that described cooler is located at the Horizon place, below of sintering machine delivery end monodentate roller, below described cooling bench Car Track, be provided with the concrete air channel of unloading grey funnel and band dividing plate, air blast is located at by the concrete air channel, and be communicated with the concrete air channel by airduct, form the air blast cooling section, above air blast cooling section chassis, be provided with seal closure, the chassis carriage-returning track of carriage return machine and the cooling bench Car Track of cooler be arranged in parallel, crossing Car Track and tail before the machine crosses Car Track and vertically is arranged vertically two ends at cooler cooling bench Car Track and carriage return machine trolley carriage-returning track, before crossing car and tail before the machine and crossing the machine that car places two ends respectively, tail crosses on the Car Track, form a planar rectangular cycling mechanism, before described machine, cross car and tail and cross and be respectively equipped with track on the car.
2. planar rectangular energy-saving cooler according to claim 1 is characterized in that being to be starting point with the material inlet in described grey funnel and the concrete air channel of unloading, and for unloading grey funnel, remainder to discharge gate is the concrete air channel to two chassis of front end apart from part.
3. planar rectangular energy-saving cooler according to claim 1 is characterized in that crossing Car Track and tail and crosses and be respectively equipped with contact-making switch on the Car Track before described machine.
4. planar rectangular energy-saving cooler according to claim 1 is characterized in that being provided with the Vidacare corp that the elevator machine of pulling a cart is connected with the elevator machine of pulling a cart therewith on the chassis carriage-returning track of described carriage return machine.
5. planar rectangular energy-saving cooler according to claim 1 is characterized in that the air blast in the setting of described air blast section is the 3-5 platform, and its blower export directly is blown in the concrete air channel by pipeline.
6. a process for cooling that adopts the described planar rectangular energy-saving cooler of claim 1 is characterized in that comprising the following steps:
1) charging hopper of the hot ore deposit of sintering through entering cooler front end top after the fragmentation of sintering machine delivery end monodentate roller feeds on the cooling chassis again, the cooling chassis is in a step one step-type traveling process that stops, be pushed to length by length and advance, its fltting speed is: 1.0～1.8min/m, when chassis is pulled to the air blast section, air blast is started working, and its blast pressure is 2500～3500Pa, and air quantity is: 180000～500000m
3/ h, cold wind blasts cold wind and passes the chassis grate plate from the cooling pallet bottom, penetrates sinter bed, progressively finishes the sintering deposit cooling procedure, sintering deposit is cooled to＜100-120 ℃,
2) the cooling chassis of releasing from cooling section enters on the parking track of overturn platform of tail hydro-mechanical tipper, and the overturning operation begins immediately, starts the hydraulic cylinder on the tippler, and the tippler upset is all laid down cooled sintering deposit,
3) the empty chassis after the discharging is sent to tail and crosses on the car, when moving to tail and crossing the Car Track end, its tail crosses track on the car and the chassis carriage-returning track of carriage return machine joins, empty chassis enters the chassis carriage-returning track, empty chassis passes through elevator carriage return machine, steel cable at the carriage return machine, before proceeding to machine, carriage-returning track crosses Car Track successively, when before empty chassis moves to machine, crossing the Car Track end, crossing the car tracks before carriage-returning track on the carriage return this moment machine and the machine joins, this space-time chassis crosses car before by machine and transports cooler back, promptly finishes a circulation.
7. the process for cooling of planar rectangular energy-saving cooler according to claim 5, it is characterized in that when described cooling chassis movement velocity being: 1.5min/m, blast pressure are 3000Pa, and air quantity is: 350000m
3/ h can be cooled to sintering deposit＜110 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100118873A CN101907404B (en) | 2009-06-08 | 2009-06-08 | Planar rectangular energy-saving cooler and cooling process thereof |
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| CN2009100118873A CN101907404B (en) | 2009-06-08 | 2009-06-08 | Planar rectangular energy-saving cooler and cooling process thereof |
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| CN101907404A true CN101907404A (en) | 2010-12-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519256A (en) * | 2012-01-12 | 2012-06-27 | 张健 | Quick tail transfer vehicle for plane sintering machine |
| CN104819634A (en) * | 2015-04-17 | 2015-08-05 | 邓文华 | Natural rubber drying device |
| CN113883868A (en) * | 2021-09-27 | 2022-01-04 | 江苏羚羊水泥工程技术有限公司 | Marching type brown coal drying-machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415330Y (en) * | 2000-04-18 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Blast circular cooling machine |
| CN1544662A (en) * | 2003-11-17 | 2004-11-10 | 范正付 | Plane circular multilayer sintering method and equipment |
| CN201043859Y (en) * | 2007-04-06 | 2008-04-02 | 刘治政 | Recooling flat burning machine |
| CN201429331Y (en) * | 2009-06-08 | 2010-03-24 | 于良富 | planar rectangular energy-saving cooling machine |
-
2009
- 2009-06-08 CN CN2009100118873A patent/CN101907404B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519256A (en) * | 2012-01-12 | 2012-06-27 | 张健 | Quick tail transfer vehicle for plane sintering machine |
| CN102519256B (en) * | 2012-01-12 | 2013-10-23 | 张健 | Quick tail transfer vehicle for plane sintering machine |
| CN104819634A (en) * | 2015-04-17 | 2015-08-05 | 邓文华 | Natural rubber drying device |
| CN104819634B (en) * | 2015-04-17 | 2019-01-11 | 邓文华 | A kind of natural rubber dry processing device |
| CN113883868A (en) * | 2021-09-27 | 2022-01-04 | 江苏羚羊水泥工程技术有限公司 | Marching type brown coal drying-machine |
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