CN218937017U - Gangue sintering decarburization processing system - Google Patents
Gangue sintering decarburization processing system Download PDFInfo
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Abstract
A gangue sintering decarburization processing system comprises a screening crushing unit, a batching unit, a mixing unit and a sintering cooling unit which are sequentially connected in series. Wherein, screening crushing unit includes screening plant and breaker. The screening device comprises a first screen, a second screen and a third screen which are sequentially arranged from top to bottom and gradually smaller in aperture. The material outlet between the first screen mesh and the second screen mesh is a large-particle material outlet and is connected with the feed inlet of the batching unit. The material outlet below the third screen is a small particle material outlet and is connected with the feed inlet of the batching unit. The gangue sintering decarburization processing system provided by the utility model has reasonable design, can realize continuous stable operation, and can be used for separately batching and conveying products with different granularities, so that the gangue treatment capacity is reduced, and the cost is reduced. Meanwhile, dust generated in the production process is recycled, so that the full utilization of resources is realized.
Description
Technical Field
The utility model relates to a gangue processing system, in particular to a gangue sintering decarburization processing system, and belongs to the technical field of ferrous metallurgy.
Background
The gangue is solid waste produced in the coal mining process and the coal washing process, is rock with low carbon content and hard granularity and is associated with a coal bed, and the main component of the gangue is Al 2 O 3 、SiO 2 In addition, fe is contained in different amounts 2 O 3 、CaO、MgO、Na 2 O、K 2 O、P 2 O 5 、SO 3 And trace rare elements. According to incomplete statistics, the coal gangue storage amount in China is up to 100 hundred million tons at present, and the occupied area is more than 2 ten thousand mu. The gangue also becomes the most accumulation and annual production in China and occupies the most accumulation area,Industrial waste which is a great hazard to the environment.
The utilization ways of the coal gangue are as follows: (1) recovering coal and pyrite; (2) for generating electricity; (3) building materials are manufactured. The gangue can partially or completely replace clay component to produce ordinary cement. The coal gangue after spontaneous combustion or artificial combustion has a certain activity, and can be used as an active mixed material of cement to produce ordinary silicate cement, pozzolanic cement and less clinker cement. It can also be directly mixed with lime and gypsum in proper proportion, ground into clinker-free cement, and can be used as cementing material, and the boiling slag can be used as aggregate or stone or boiling slag can be used as coarse and fine aggregate to make the building material of concrete block or concrete hollow block, etc..
At present, a great deal of research is carried out on the efficient utilization of coal gangue in China. Studies have shown that the preparation of active materials by fire calcination of coal gangue is an effective method for digestion and massive stockpiling of coal gangue. The technology for preparing the mixed material by firing the gangue through a fire method utilizes the characteristics of high temperature and short time of a combustion section in the sintering process, the gangue can form a vitreous phase, meanwhile, the inside of the sintering material is mainly in an oxidizing atmosphere, and harmful components in the gangue, such as organic matters, carbon residue, sulfur and the like, can be removed at a high temperature, so that adverse effects on the cementing property, freezing resistance and durability of cement are prevented.
However, no specific processing system for fire roasting of coal gangue exists in the prior art, and the processing of the coal gangue is greatly influenced, for example: the method has the problems that coal gangue is difficult to treat effectively, ash produced in the process of treating the coal gangue cannot be utilized effectively, the process of treating the coal gangue is complex, and the like.
Disclosure of Invention
Aiming at the problems that coal gangue is difficult to treat and a specific processing system for fire roasting of the coal gangue is lacking in the prior art, the utility model provides the coal gangue sintering decarburization processing system which can be used for decarburizing and processing the coal gangue obtained by exploitation into a finished product from a source, and meanwhile, ash produced in the roasting process is effectively utilized, sintering bottom materials and upper materials are separated in advance, so that the production energy consumption is reduced, and continuous stabilization operation can be realized.
According to an embodiment of the utility model, a gangue sintering decarburization processing system is provided.
A gangue sintering decarburization processing system comprises a screening crushing unit, a batching unit, a mixing unit and a sintering cooling unit which are sequentially connected in series. Wherein, screening crushing unit includes screening plant and breaker. The screening device comprises a first screen, a second screen and a third screen which are sequentially arranged from top to bottom and gradually smaller in aperture. Wherein, the material outlet of first screen cloth top, the material outlet between second screen cloth and the third screen cloth all is connected to breaker's feed inlet through broken material conveying device, and breaker's discharge gate is connected with screening plant's feed inlet through screening material conveying device again. The material outlet between the first screen and the second screen is a large particle material outlet, which is connected with the feed inlet of the batching unit. The material outlet below the third screen is a small particle material outlet which is connected with the feed inlet of the batching unit.
Preferably, the batching unit comprises a bedding buffer tank, a batching ore tank and a batching discharging device. The large granule material outlet between first screen cloth and the second screen cloth is connected with the shop bottom material buffer tank through first batching delivery mechanism, and the discharge end of first batching delivery mechanism sets up in the top of shop bottom material buffer tank feed inlet. The small particle material outlet below the third screen is connected with the batching ore tank through a second batching material conveying device, the discharge end of the second batching material conveying device is arranged above the batching ore tank feed inlet, and the batching discharging device is arranged on the second batching material conveying device. The discharge gate of bedding material buffer tank is connected with sintering cooling unit, and the discharge gate of batching ore tank is connected with the compounding unit.
Preferably, the batching unit comprises a plurality of batching mineral tanks, the second batching conveying means passes through the upper space of all batching mineral tanks, and the batching discharging means can freely move on the second batching conveying means.
Preferably, the mixing unit comprises a primary mixing mechanism and a secondary mixing mechanism. The discharge gate of batching ore tank is connected with the feed inlet of primary mixing mechanism through compounding feeding device. The discharge port of the primary mixing mechanism is connected with the feed port of the secondary mixing mechanism through the secondary mixing and conveying device, and the discharge port of the secondary mixing mechanism is connected with the sintering cooling unit.
Preferably, the sintering cooling unit comprises a bottom laying bin, a mixing bin, a sintering machine, an ignition heat preservation furnace, a sintering discharging device, a bellows and a flue. And the bottom laying bin and the mixing bin are arranged above the sintering machine. The discharge gate of bedding material dashing groove is connected with the feed inlet of shop bottom feed bin through first sintering conveying device, and the bottom of shop bottom feed bin is equipped with first distributing device. The discharge gate of secondary mixing mechanism is connected with the feed inlet of mixing bunker through second sintering conveying device, and the bottom of mixing bunker is equipped with second distributing device. The ignition holding furnace is arranged above the sintering machine head. The sintering discharging device is arranged at the tail part of the sintering machine. The bellows is arranged at the bottom of the sintering machine and is communicated with a material layer above the sintering machine. The flue is arranged below the air box and communicated with the air box.
Preferably, the flue is divided into a sintering flue and a cooling flue, wherein the sintering flue is a flue close to the lower part of the/-/bellows of the sintering machine head, and the cooling flue is a flue close to the lower part of the/-/bellows of the sintering machine tail. The sintering cooling unit further comprises a first ash collecting device and a second ash collecting device, wherein the first ash collecting device is arranged inside the sintering flue, and the second ash collecting device is arranged inside the cooling flue.
Preferably, the batching unit further comprises a pneumatic conveying receiving device and a powder ore tank, wherein the discharge end of the pneumatic conveying receiving device is arranged above the feeding port of the powder ore tank, and the discharging port of the powder ore tank is arranged above the mixing and conveying device and is communicated with the mixing and conveying device. The discharge port of the first ash collecting device is connected with the feed end of the pneumatic conveying receiving device through the first ash conveying device.
Preferably, the system further comprises a flue gas cleaning unit. The flue gas purification unit comprises a dust removal mechanism, an exhaust mechanism and a chimney. The sintering flue and the cooling flue are connected with an air inlet of the dust removing mechanism through a first flue gas conveying pipeline. The air outlet of the dust removing mechanism is connected with the air inlet of the air exhausting mechanism through a second flue gas conveying pipeline. The air outlet of the air draft mechanism is connected with a chimney through a third flue gas conveying pipeline.
Preferably, an ash bucket is arranged below the dust removing mechanism, an ash discharging valve is arranged at the bottom of the ash bucket, an ash collecting device is arranged below the ash bucket, and a discharge port of the ash collecting device is connected with a feed end of the pneumatic conveying receiving device through a second ash conveying device.
Preferably, the system further comprises a raw material stacking unit, and the raw material stacking unit is arranged between the screening and crushing unit and the batching unit according to the trend of the materials. The raw material stacking unit comprises an outer wall, a retaining wall, a first stacking device, a second stacking device, a first material taking device and a second material taking device. The outer wall is of a closed structure, and the retaining wall is arranged on the central axis of the outer wall in the length direction. The large-particle material outlet of the screening and crushing unit is connected with the feeding end of the first stacking device, and the discharging end of the first stacking device is arranged on one side of the enclosing wall. The small particle material outlet of the screening and crushing unit is connected with the feeding end of the second stacking device, and the discharging end of the second stacking device is arranged on the other side of the enclosing wall. The large granular material and the small granular material form two material piles on two sides of the retaining wall respectively. The feeding end of the first material taking device is arranged at a material pile position on one side where the first material piling device is arranged, and the discharging end of the first material taking device is connected with the feeding end of the first material distributing and conveying device. The feeding end of the second material taking device is arranged at the material pile position on one side where the second material piling device is arranged, and the discharging end of the second material taking device is connected with the feeding end of the second material distributing and conveying device.
Preferably, the raw material stacking unit further comprises a partition wall, the partition wall is perpendicular to the retaining wall, and partition walls are arranged on two sides of the retaining wall.
Preferably, the raw material stacking unit includes a plurality of partition walls dividing both sides of the wall into a plurality of regions.
Preferably, the system further comprises a finishing unit. The finished product unit comprises a discharging car and a finished product ore tank. And a discharge hole of the sintering discharge device is connected with a feed inlet of the discharge car through a finished product conveying device. The finished product ore tank is arranged below the finished product conveying device, and a blanking valve is arranged at the bottom of the finished product ore tank.
Preferably, the discharge port of the second ash collecting device is connected with the feeding end of the finished product conveying device through a third ash conveying device. Preferably, the system further comprises a raw material receiving unit comprising a mine receiving tank and a feeding device. The discharge gate of receiving the ore deposit groove is connected with the feed inlet of screening broken unit through feeding device.
Preferably, the first screen 1011 has a mesh size of 23 to 27mm. The second screen 1012 has a mesh size of 15 to 18mm. The mesh opening of the third screen 1013 is 6 to 10mm.
In the utility model, a screening and crushing unit, a batching unit, a mixing unit and a sintering cooling unit are sequentially arranged in series. The coal gangue is processed through the screening and crushing unit to obtain products with two granularities of 0-8 mm and 16-25 mm, wherein the products with granularity of 16-25 mm are conveyed to the bedding material buffer tank through the first batching conveying device, and the products with granularity of 0-8 mm are conveyed to the batching ore tank through the second batching conveying device. After the two kinds of granularity products are respectively mixed in a bedding buffer tank and a batching mineral tank, the 16-25 mm granularity products are conveyed to a bedding bin through a first sintering conveying device, then are paved on a sintering machine as a bedding through a first distributing device, the 0-8 mm granularity products are conveyed to a mixing unit through a mixing conveying device, and are conveyed to a mixing bin through a second sintering conveying device after primary mixing and secondary mixing in the mixing unit, and are paved above the bedding through a second distributing device. After the material layer is laid, the sintering machine is used for igniting and sintering the material layer, and the obtained finished product is discharged through a sintering discharging device.
In the utility model, the flue gas generated in the sintering process is discharged through the flue below the sintering machine, a large amount of dust is usually contained in the flue gas, the flue gas is divided into a sintering flue and a cooling flue, the sintering flue is positioned at the head of the sintering machine, the cooling flue is positioned at the tail of the sintering machine, the deposited dust in the cooling flue is the dust after sintering and decarburization, the dust can be directly sent to a finished product unit, and most of the dust in the sintering flue is the dust which is not sintered and decarburized and needs to be returned to the batching process to participate in batching sintering again. In addition, the system is also provided with a flue gas purifying unit, the flue gas purifying unit also comprises an ash bucket, and residual dust in sintering flue gas is collected and sent to a batching process to be recordered and sintered.
In the present utility model, a raw material stocking unit, a finished product unit, and a raw material receiving unit are also provided. The raw material storage unit is arranged between the screening and crushing unit and the batching unit, so that the raw material storage of the whole system can be ensured, continuous and stable production is realized, and the coal gangue can be further homogenized in the raw material storage unit, so that the stability of decarburized products is further improved. The finished product unit is arranged at the downstream of the sintering cooling device, and finished ore in the finished product unit can be transported out through an automobile. The raw material receiving unit is arranged at the upstream of the screening and crushing unit and is used for receiving the coal gangue raw material.
In the utility model, the bedding materials in the bedding material buffer tank of the batching unit can be produced by transporting the bedding materials to a vertical kiln through the outside of an automobile.
In the utility model, the bottom materials and the mixture required by sintering are respectively proportioned and conveyed, namely, small-particle materials and large-particle materials are separated from a screening and crushing process, so that the treatment capacity of coal gangue in a subsequent mixing process is reduced, and resources are saved. Meanwhile, dust generated in the production process is effectively recycled, so that the full utilization of resources is realized.
Compared with the prior art, the utility model has the following beneficial effects:
1. the gangue sintering decarburization processing system provided by the utility model has reasonable design, can realize continuous stable operation, and can be used for separately batching and conveying products with different granularities, so that the gangue treatment capacity is reduced, and the cost is reduced. Meanwhile, dust generated in the production process is recycled, so that the full utilization of resources is realized.
2. According to the gangue sintering decarburization processing system provided by the utility model, the raw material storage unit is arranged, so that the homogenization of raw materials is further realized, and the stability of decarburization products is improved.
Drawings
Fig. 1 is a schematic structural diagram of a gangue sintering decarburization processing system provided by the utility model.
Fig. 2 is a schematic structural diagram of a screening and crushing unit in the gangue sintering decarburization processing system.
Fig. 3 is a schematic structural diagram of a batching unit in the gangue sintering decarburization processing system.
Fig. 4 is a schematic structural diagram of a mixing unit in the gangue sintering decarburization processing system provided by the utility model.
Fig. 5 is a schematic structural diagram of a sintering cooling unit in the gangue sintering decarburization processing system provided by the utility model.
Fig. 6 is a schematic structural diagram of a flue gas purifying unit in the gangue sintering decarburization processing system provided by the utility model.
Fig. 7 is a schematic structural diagram of a raw material stacking unit in the gangue sintering decarburization processing system.
Fig. 8 is a schematic structural diagram of a finished product unit in the gangue sintering decarburization processing system provided by the utility model.
Fig. 9 is a schematic structural diagram of a raw material receiving unit in the gangue sintering decarburization processing system.
FIG. 10 is a schematic diagram of the complete structure of the gangue sintering decarburization processing system provided by the utility model.
1: a sieving and crushing unit; 101: a screening device; 1011: a first screen; 1012: a second screen; 1013: a third screen; 102: a crushing device; 103: crushing and conveying the material; 104: sieving the material conveying device; 2: a batching unit; 201: a bedding material buffer tank; 202: a batching ore tank; 203: a batching and discharging device; 204: a first material dispensing and conveying device; 205: a second batching and conveying device; 206: pneumatic conveying and receiving device; 207: a powder ore tank; 3: a mixing unit; 301: a primary mixing mechanism; 302: a secondary mixing mechanism; 303: a mixing and conveying device; 304: a second material mixing and conveying device; 4: a sintering cooling unit; 401: paving a bottom material bin; 4011: a first distributing device; 402: a mixing bin; 4021: a second distributing device; 403: a sintering machine; 404: igniting a heat preservation furnace; 405: a sintering discharge device; 406: a wind box; 407: a flue; 4071: sintering flue; 4072: a cooling flue; 408: a first sintering material conveying device; 409: a second sintering material conveying device; 410: a first dust collection device; 411: a second dust collecting device; 412: a first ash conveying means; 413: a third ash conveying means; 5: a flue gas purifying unit; 501: a dust removing mechanism; 502: an air exhausting mechanism; 503: a chimney; 504: a first flue gas delivery duct; 505: a second flue gas delivery duct; 506: a third flue gas delivery duct; 507: an ash bucket; 5071: an ash discharge valve; 508: ash collection means; 509: a second ash conveying device; 6: a raw material piling unit; 601: an outer wall; 602: a retaining wall; 603: a first stacker; 604: a second stacker; 605: a first reclaimer; 606: a second material taking device; 607: partition walls; 7: a finished product unit; 701: a discharging car; 702: a finished ore tank; 7021: a blanking valve; 703: a finished product conveying device; 8: a raw material receiving unit; 801: a mineral receiving tank; 802: and a feeding device.
Detailed Description
The following examples illustrate the technical aspects of the utility model, and the scope of the utility model claimed includes but is not limited to the following examples.
According to an embodiment of the utility model, a gangue sintering decarburization processing system is provided.
The system comprises a screening and crushing unit 1, a batching unit 2, a mixing unit 3 and a sintering cooling unit 4 which are sequentially connected in series. Wherein the screening and crushing unit 1 comprises a screening device 101 and a crushing device 102. The screening device 101 includes a first screen 1011, a second screen 1012, and a third screen 1013 which are disposed in this order from the top down and have gradually smaller apertures. Wherein, the material outlet above the first screen 1011, the material outlet between the second screen 1012 and the third screen 1013 are all connected to the feeding port of the crushing device 102 through the crushing and conveying device 103, and the discharging port of the crushing device 102 is connected to the feeding port of the sieving device 101 through the re-sieving and conveying device 104. The material outlet between the first screen 1011 and the second screen 1012 is a large particle material outlet, which is connected with the feed inlet of the batching unit 2. The material outlet below the third screen 1013 is a small particle material outlet, which is connected with the feed inlet of the dosing unit 2.
Preferably, the batching unit 2 comprises a bedding buffer tank 201, a batching chute 202 and a batching discharge device 203. The large granule material outlet between first screen cloth 1011 and second screen cloth 1012 is connected with the shop bottom material buffer tank 201 through first batching delivery mechanism 204, and the discharge end of first batching delivery mechanism 204 sets up in the top of the shop bottom material buffer tank 201 feed inlet. The small particle material outlet below the third screen 1013 is connected with the batching chute 202 through a second batching conveying device 205, the discharge end of the second batching conveying device 205 is arranged above the feeding port of the batching chute 202, and the batching discharging device 203 is arranged on the second batching conveying device 205. The discharge gate of bedding material buffer tank 201 is connected with sintering cooling unit 4, and the discharge gate of batching ore tank 202 is connected with compounding unit 3.
Preferably, the batching unit 2 comprises a plurality of batching tanks 202, and the second batching delivery means 205 passes through the space above all batching tanks 202, and the batching discharge means 203 is freely movable on the second batching delivery means 205.
Preferably, the mixing unit 3 includes a primary mixing mechanism 301 and a secondary mixing mechanism 302. The discharge port of the batching chute 202 is connected with the feed port of the primary mixing mechanism 301 through a mixing and conveying device 303. The discharge port of the primary mixing mechanism 301 is connected with the feed port of the secondary mixing mechanism 302 through the secondary mixing and conveying device 304, and the discharge port of the secondary mixing mechanism 302 is connected with the sintering cooling unit 4.
Preferably, the sintering cooling unit 4 comprises a bottom material paving bin 401, a mixing bin 402, a sintering machine 403, an ignition holding furnace 404, a sintering discharge device 405, a wind box 406 and a flue 407. The bottoming bin 401 and the mixing bin 402 are both disposed above the sintering machine 403. The discharge gate of bedding material dashing groove 201 is connected with the feed inlet of shop bottom feed bin 401 through first sintering feeding mechanism 408, and the bottom of shop bottom feed bin 401 is equipped with first distributing device 4011. The discharge port of the secondary mixing mechanism 302 is connected with the feed port of the mixing bin 402 through a second sintering material conveying device 409, and a second distributing device 4021 is arranged at the bottom of the mixing bin 402. The ignition holding furnace 404 is arranged above the head of the sintering machine 403. The sintering discharge device 405 is arranged at the tail of the sintering machine 403. The bellows 406 is arranged at the bottom of the sintering machine 403 and is communicated with a material layer above the sintering machine 403. A flue 407 is disposed below the bellows 406 in communication with the bellows 406.
Preferably, the flue 407 is divided into a sintering flue 4071 and a cooling flue 4072, the sintering flue 4071 is a flue under a 1/2-2/3 air box near the head of the sintering machine, and the cooling flue 4072 is a flue under a 1/3-1/2 air box near the tail of the sintering machine. The sintering cooling unit 4 further comprises a first ash collecting device 410 and a second ash collecting device 411, wherein the first ash collecting device 410 is arranged inside the sintering flue 4071, and the second ash collecting device 411 is arranged inside the cooling flue 4072.
Preferably, the batching unit 2 further includes a pneumatic conveying receiving device 206 and a powder ore tank 207, where a discharge end of the pneumatic conveying receiving device 206 is disposed above a feed inlet of the powder ore tank 207, and a discharge outlet of the powder ore tank 207 is disposed above the mixing and conveying device 303 and is communicated with the mixing and conveying device 303. The discharge port of the first ash collector 410 is connected to the feed end of the pneumatic conveying receiver 206 through a first ash conveyor 412.
Preferably, the system further comprises a flue gas cleaning unit 5. The flue gas cleaning unit 5 comprises a dust removal mechanism 501, an exhaust mechanism 502 and a chimney 503. The sintering flue 4071 and the cooling flue 4072 are connected with an air inlet of the dust removing mechanism 501 through a first flue gas conveying pipeline 504. The air outlet of the dust removing mechanism 501 is connected with the air inlet of the air exhausting mechanism 502 through a second flue gas conveying pipeline 505. The air outlet of the air extraction mechanism 502 is connected to a chimney 503 via a third flue gas duct 506.
Preferably, an ash bucket 507 is disposed below the dust removing mechanism 501, an ash unloading valve 5071 is disposed at the bottom of the ash bucket 507, an ash collecting device 508 is disposed below the ash bucket 507, and a discharge port of the ash collecting device 508 is connected with a feed end of the pneumatic conveying receiving device 206 through a second ash conveying device 509.
Preferably, the system further comprises a material stocking unit 6, the material stocking unit 6 being arranged between the screening and crushing unit 1 and the batching unit 2 in accordance with the course of the material. The raw material stacking unit 6 includes an outer wall 601, a retaining wall 602, a first stacking device 603, a second stacking device 604, a first material taking device 605 and a second material taking device 606. The outer wall 601 is of a closed structure, and the retaining wall 602 is disposed on a central axis of the outer wall 601 in a length direction. The large granule material outlet of screening broken unit 1 is connected with the feed end of first windrow device 603, and the discharge end of first windrow device 603 sets up in one side of enclosure. The small particle material outlet of the screening and crushing unit 1 is connected with the feeding end of the second stacking device 604, and the discharging end of the second stacking device 604 is arranged on the other side of the enclosing wall. The large and small granular materials form two piles on either side of the retaining wall 602. The feeding end of the first material taking device 605 is arranged at the material pile position on the side where the first material piling device 603 is located, and the discharging end of the first material taking device 605 is connected with the feeding end of the first material distributing and conveying device 204. The feeding end of the second material taking device 606 is disposed at the material pile on the side where the second material stacking device 604 is located, and the discharging end of the second material taking device 606 is connected with the feeding end of the second material distributing and conveying device 205.
Preferably, the raw material stacking unit 6 further includes a partition 607, the partition 607 is perpendicular to the retaining wall 602, and both sides of the retaining wall 602 are provided with the partition 607.
Preferably, the raw material stacking unit 6 includes a plurality of partition walls 607 dividing both sides of the retaining wall 602 into a plurality of regions.
Preferably, the system further comprises a finishing unit 7. The finished product unit 7 comprises a dump truck 701 and a finished product tank 702. The discharge port of the sintering discharge device 405 is connected with the feed port of the discharge car 701 through a finished product conveying device 703. The finished product ore tank 702 is arranged below the finished product conveying device 703, and a blanking valve 7021 is arranged at the bottom of the finished product ore tank 702.
Preferably, the outlet of the second ash collecting device 411 is connected to the inlet end of the product conveying device 703 through the third ash conveying device 413.
Preferably, the system further comprises a raw material receiving unit 8, said raw material receiving unit 8 comprising a mine receiving tank 801 and a feeding means 802. The discharge port of the ore receiving tank 801 is connected with the feed port of the screening and crushing unit 1 through a feeding device 802.
Preferably, the first screen 1011 has a mesh size of 23 to 27mm. The second screen 1012 has a mesh size of 15 to 18mm. The mesh opening of the third screen 1013 is 6 to 10mm.
Claims (15)
1. A gangue sintering decarburization processing system is characterized in that: the system comprises a screening and crushing unit (1), a batching unit (2), a mixing unit (3) and a sintering cooling unit (4) which are sequentially connected in series; wherein the screening and crushing unit (1) comprises a screening device (101) and a crushing device (102); the screening device (101) comprises a first screen (1011), a second screen (1012) and a third screen (1013) which are sequentially arranged from top to bottom and gradually become smaller in pore diameter; wherein, the material outlet above the first screen (1011), the material outlet between the second screen (1012) and the third screen (1013) are all connected to the feeding port of the crushing device (102) through the crushing and conveying device (103), and the discharging port of the crushing device (102) is connected with the feeding port of the screening device (101) through the re-screening and conveying device (104); the material outlet between the first screen (1011) and the second screen (1012) is a large particle material outlet which is connected with the feed inlet of the batching unit (2); the material outlet below the third screen (1013) is a small particle material outlet which is connected with the feed inlet of the batching unit (2).
2. The system according to claim 1, wherein: the batching unit (2) comprises a bedding buffer tank (201), a batching ore tank (202) and a batching discharging device (203); the large-particle material outlet between the first screen (1011) and the second screen (1012) is connected with the bedding material buffer tank (201) through a first batching and conveying device (204), and the discharge end of the first batching and conveying device (204) is arranged above the feed inlet of the bedding material buffer tank (201); the small particle material outlet below the third screen (1013) is connected with the batching ore tank (202) through a second batching and conveying device (205), the discharge end of the second batching and conveying device (205) is arranged above the feeding port of the batching ore tank (202), and the batching and discharging device (203) is arranged on the second batching and conveying device (205); the discharge port of the bedding material buffer tank (201) is connected with the sintering cooling unit (4), and the discharge port of the batching ore tank (202) is connected with the mixing unit (3).
3. The system according to claim 2, wherein: the batching unit (2) comprises a plurality of batching mineral tanks (202), the second batching conveying device (205) passes through the space above all the batching mineral tanks (202), and the batching discharging device (203) can freely move on the second batching conveying device (205).
4. A system according to claim 3, characterized in that: the mixing unit (3) comprises a primary mixing mechanism (301) and a secondary mixing mechanism (302); the discharge port of the batching chute (202) is connected with the feed port of the primary mixing mechanism (301) through a mixing and conveying device (303); the discharge port of the primary mixing mechanism (301) is connected with the feed port of the secondary mixing mechanism (302) through a secondary mixing and conveying device (304), and the discharge port of the secondary mixing mechanism (302) is connected with the sintering cooling unit (4).
5. The system according to claim 4, wherein: the sintering cooling unit (4) comprises a bottom laying bin (401), a mixing bin (402), a sintering machine (403), an ignition heat preservation furnace (404), a sintering unloading device (405), a bellows (406) and a flue (407); the bottom laying bin (401) and the mixing bin (402) are arranged above the sintering machine (403); a discharge hole of the bedding material buffer groove (201) is connected with a feed hole of a bedding material bin (401) through a first sintering conveying device (408), and a first material distributing device (4011) is arranged at the bottom of the bedding material bin (401); the discharge port of the secondary mixing mechanism (302) is connected with the feed port of the mixing bin (402) through a second sintering conveying device (409), and a second distributing device (4021) is arranged at the bottom of the mixing bin (402); the ignition heat preservation furnace (404) is arranged above the head of the sintering machine (403); the sintering unloading device (405) is arranged at the tail part of the sintering machine (403); the bellows (406) is arranged at the bottom of the sintering machine (403) and is communicated with a material layer above the sintering machine (403); a flue (407) is arranged below the air box (406) and is communicated with the air box (406).
6. The system according to claim 5, wherein: the flue (407) is divided into a sintering flue (4071) and a cooling flue (4072), wherein the sintering flue (4071) is a flue below a 1/2-2/3 air box close to the head of the sintering machine, and the cooling flue (4072) is a flue below a 1/3-1/2 air box close to the tail of the sintering machine; the sintering cooling unit (4) further comprises a first ash collecting device (410) and a second ash collecting device (411), wherein the first ash collecting device (410) is arranged inside the sintering flue (4071), and the second ash collecting device (411) is arranged inside the cooling flue (4072).
7. The system according to claim 6, wherein: the batching unit (2) further comprises a pneumatic conveying receiving device (206) and a powder ore tank (207), wherein the discharge end of the pneumatic conveying receiving device (206) is arranged above the feed inlet of the powder ore tank (207), and the discharge outlet of the powder ore tank (207) is arranged above the mixing and conveying device (303) and is communicated with the mixing and conveying device (303); the discharge port of the first ash collecting device (410) is connected with the feed end of the pneumatic conveying receiving device (206) through a first ash conveying device (412).
8. The system according to claim 7, wherein: the system further comprises a flue gas cleaning unit (5); the flue gas purification unit (5) comprises a dust removal mechanism (501), an air draft mechanism (502) and a chimney (503); the sintering flue (4071) and the cooling flue (4072) are connected with an air inlet of the dust removing mechanism (501) through a first flue gas conveying pipeline (504); an air outlet of the dust removing mechanism (501) is connected with an air inlet of the air exhausting mechanism (502) through a second flue gas conveying pipeline (505); the air outlet of the air draft mechanism (502) is connected with a chimney (503) through a third flue gas conveying pipeline (506).
9. The system according to claim 8, wherein: the dust removing device is characterized in that an ash bucket (507) is arranged below the dust removing mechanism (501), an ash discharging valve (5071) is arranged at the bottom of the ash bucket (507), an ash collecting device (508) is arranged below the ash bucket (507), and a discharge port of the ash collecting device (508) is connected with a feed end of the pneumatic conveying receiving device (206) through a second ash conveying device (509).
10. The system according to claim 9, wherein: the system also comprises a raw material stacking unit (6), wherein the raw material stacking unit (6) is arranged between the screening and crushing unit (1) and the batching unit (2) according to the trend of materials; the raw material stacking unit (6) comprises an outer wall (601), a retaining wall (602), a first stacking device (603), a second stacking device (604), a first material taking device (605) and a second material taking device (606); the outer wall (601) is of a closed structure, and the retaining wall (602) is arranged on the central axis of the outer wall (601) in the length direction; the large-particle material outlet of the screening and crushing unit (1) is connected with the feeding end of the first stacking device (603), and the discharging end of the first stacking device (603) is arranged on one side of the enclosing wall; the small particle material outlet of the screening and crushing unit (1) is connected with the feeding end of the second stacking device (604), and the discharging end of the second stacking device (604) is arranged on the other side of the enclosing wall; the large granular material and the small granular material form two material piles on two sides of the retaining wall (602) respectively; the feeding end of the first material taking device (605) is arranged at a material pile on one side of the first material piling device (603), and the discharging end of the first material taking device (605) is connected with the feeding end of the first material distributing and conveying device (204); the feeding end of the second material taking device (606) is arranged at the material pile position on one side of the second material piling device (604), and the discharging end of the second material taking device (606) is connected with the feeding end of the second material distributing and conveying device (205).
11. The system according to claim 10, wherein: the raw material stacking unit (6) further comprises a partition wall (607), the partition wall (607) is perpendicular to the retaining wall (602), and partition walls (607) are arranged on two sides of the retaining wall (602).
12. The system according to claim 11, wherein: the raw material piling unit (6) comprises a plurality of partition walls (607) which divide the two sides of the retaining wall (602) into a plurality of areas.
13. The system according to claim 12, wherein: the system further comprises a finishing unit (7); the finished product unit (7) comprises a discharging car (701) and a finished product ore tank (702); the discharge port of the sintering discharge device (405) is connected with the feed port of the discharge car (701) through a finished product conveying device (703); the finished product ore tank (702) is arranged below the finished product conveying device (703), and a blanking valve (7021) is arranged at the bottom of the finished product ore tank (702).
14. The system according to claim 13, wherein: the discharge port of the second ash collecting device (411) is connected with the feeding end of the finished product conveying device (703) through a third ash conveying device (413).
15. The system according to claim 14, wherein: the system further comprises a raw material receiving unit (8), wherein the raw material receiving unit (8) comprises a mineral receiving tank (801) and a feeding device (802); the discharge port of the ore receiving tank (801) is connected with the feed port of the screening and crushing unit (1) through a feeding device (802); and/or
The mesh aperture of the first screen (1011) is 23-27 mm; the mesh aperture of the second screen (1012) is 15-18 mm; the mesh opening of the third screen (1013) is 6-10 mm.
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| CN202223045305.3U CN218937017U (en) | 2022-11-16 | 2022-11-16 | Gangue sintering decarburization processing system |
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| CN202223045305.3U CN218937017U (en) | 2022-11-16 | 2022-11-16 | Gangue sintering decarburization processing system |
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