CN117778712A - Process and device for treating cooked pellet bulk material of rotary kiln of chain grate machine - Google Patents
Process and device for treating cooked pellet bulk material of rotary kiln of chain grate machine Download PDFInfo
- Publication number
- CN117778712A CN117778712A CN202211148644.6A CN202211148644A CN117778712A CN 117778712 A CN117778712 A CN 117778712A CN 202211148644 A CN202211148644 A CN 202211148644A CN 117778712 A CN117778712 A CN 117778712A
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- Prior art keywords
- chain grate
- belt conveyor
- bulk material
- temperature
- rotary kiln
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- 239000013590 bulk material Substances 0.000 title claims abstract description 55
- 239000008188 pellet Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 10
- 239000000463 material Substances 0.000 claims abstract description 78
- 238000007599 discharging Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 4
- 239000011707 mineral Substances 0.000 claims abstract description 4
- 230000000630 rising effect Effects 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 230000001502 supplementing effect Effects 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a processing technology and a system for cooked sphere bulk materials of a rotary kiln pellet of a chain grate machine, which comprises the chain grate machine, a rotary kiln and a cooked sphere bulk material processing device, wherein the cooked sphere bulk material processing device comprises a low-temperature bulk material conveying mechanism, a high Wen Sanliao processing conveying mechanism, a belt conveyor II, a ball mill, a slurry pump, a drainage pump and filtering equipment, and the processing technology comprises the following steps: the low-temperature bulk materials from the low-temperature bulk material section of the air box of the chain grate machine are delivered to the rubber belt conveyor I through the chute; the materials in the bulk material buffer bin fall into a cooling pool, the cooled bulk materials in the high-temperature section are discharged from a chute of the rising section of the slag dragging machine and fed into a rubber belt conveyor II together with the low-temperature bulk materials at the discharging end of the rubber belt conveyor I, and then fed into a ball mill and filtering equipment by the rubber belt conveyor II, and the dehydrated mineral powder is reused. The invention can completely recycle bulk materials in the production process, reduce environmental pollution and reduce the ring forming risk of the rotary kiln.
Description
Technical Field
The invention relates to a processing technology and a device for cooked pellet bulk materials of a rotary kiln of a chain grate machine.
Background
In the existing pellet production process, a chain grate machine, a rotary kiln and a circular cooler are mature processes, and the chain grate machine is generally divided into four sections along the direction of material flow: the device comprises an air blast drying section, an air draft drying section, a preheating section and a preheating section; the two sides of each section are correspondingly provided with hot air bellows. The cooked sphere bulk material of the grate machine rotary kiln pellet is generally bulk material of a grate machine bellows high temperature section generated from bulk materials of two bellows at the discharging end and a high temperature section of a rotary kiln tail cover, and the material of the grate machine except for the two bellows at the high temperature section is low temperature Duan Sanliao of the grate machine bellows.
The process flow of the traditional rotary kiln cooked sphere bulk material treatment of the chain grate machine mainly comprises the following steps: the cooked sphere bulk material comes from two parts, one part comes from a grate machine bellows low temperature Duan Sanliao; part of the high-temperature bulk materials come from a high-temperature section (mainly two air boxes at the discharging end) of the air box of the chain grate machine and the high-temperature bulk materials of the kiln tail cover of the rotary kiln.
The two parts of materials are processed in the following way: the temperature of the part of the material is lower than the temperature of the part of the material at the low temperature Duan Sanliao of the air box of the chain grate machine, the part of the material is collected and stored in a bulk bin by a tape machine, and the bulk bin is transported and delivered by an automobile at regular intervals to serve as a sintering raw material; the high-temperature section (mainly two air boxes at the discharging end) of the air box of the chain grate machine and the high-temperature bulk material of the kiln tail cover of the rotary kiln are collected by a chute and then lifted into the kiln tail cover of the rotary kiln by a high Wen Dou lifter to participate in roasting again.
The above process has the following problems or disadvantages:
1) The periodic outward transportation at the low temperature Duan Sanliao firstly causes serious waste because the high-grade iron-containing raw materials cannot be recycled, and secondly causes unavoidable pollution to the environment in the processes of loading and outward transportation of automobiles;
2) The high-temperature section bulk cargo or the preheating balls fall to the hopper from the upper surface of the grate bed and the high position of the rotary kiln and then are thrown into the rotary kiln, so that the preheating balls are crushed, the powder entering the rotary kiln is increased, and the risk of looping is increased.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a system and a process for treating the cooked pellet bulk material of the rotary kiln of the chain grate machine, which can completely recycle the bulk material in the production process, reduce environmental pollution and reduce the ring formation risk of the rotary kiln.
The invention relates to a system for treating cooked pellet bulk materials of a rotary kiln of a chain grate machine, which comprises the chain grate machine, a rotary kiln and a cooked pellet bulk material treatment device, wherein a high-temperature section of the chain grate machine is communicated with a kiln tail cover of the rotary kiln; the two bellows at the discharging end of the chain grate machine are taken as a high Wen Sanliao section of the bellows of the chain grate machine, the tail cover of the rotary kiln is taken as a high Wen Sanliao section, the rest bellows bulk materials of the chain grate machine are taken as a low-temperature bulk material section of the bellows of the chain grate machine, the cooked ball bulk material treatment device comprises a low-temperature bulk material conveying mechanism, a high Wen Sanliao treatment conveying mechanism, a rubber belt conveyor II, a ball mill, a slurry pump, a drainage pump and filtering equipment, wherein the rubber belt conveyor I is arranged at the lower part of the low-temperature bellows bulk material section of the chain grate machine and used for collecting low-temperature bulk materials, the high Wen Sanliao treatment conveying mechanism comprises a chute, a bulk material buffer bin, a cooling pond, a slag dragging machine and a steam collecting cover, the cooling pond is arranged on the terrace of the high-temperature bulk material section of the chain grate machine, the upper part of the bulk material buffer bin is arranged at the lower part of a discharge port of the bellows of the high-temperature section of the chain grate machine and the tail Wen Sanliao of the rotary kiln, and the steam collecting cover is arranged at the lower end of the discharge port of the bulk material buffer bin through the steam collecting cover, and the steam collecting cover is arranged outside the discharge pipe;
the material receiving end of the belt conveyor II is arranged at the lower part of the material discharging end of the belt conveyor I, the slag dragging machine is arranged in the cooling pond, the material discharging port of the slag dragging machine and the material discharging end of the belt conveyor I are arranged at the upper part of the material receiving end of the belt conveyor II, the material discharging end of the belt conveyor II is arranged at the upper part of the material feeding port of the ball mill, the material feeding end of the slurry pump is communicated with the material discharging port of the ball mill, and the material discharging end of the slurry pump is connected with the filtering equipment.
Preferably, a drain pipeline is arranged at the lower part of the cooling pool, a water supplementing pipe is arranged on the ball mill, one end of the drain pump is communicated with the drain pipe, and the other end of the drain pump is communicated with the water supplementing pipe.
Preferably, the bottom of the filtering device is provided with a water outlet, and the filtered water is communicated with the cooling pool through a circulating water pipeline.
The invention relates to a processing technology of cooked pellet bulk materials of a rotary kiln of a chain grate machine, which is characterized by comprising the following steps:
1) The low-temperature bulk materials from the low-temperature bulk material section of the air box of the chain grate machine are delivered to the rubber belt conveyor I through the chute and then conveyed to the discharging end of the chain grate machine by the rubber belt conveyor I;
2) High Wen Sanliao of two bellows from the discharging end of the chain grate machine and high-temperature bulk materials of a high-temperature bulk material section of a kiln tail cover of the rotary kiln are jointly discharged into a bulk material buffer bin through a chute;
3) The materials in the bulk material buffer bin fall into a cooling pool, the cooled bulk materials in the high-temperature section are discharged from a chute of the rising section of the slag conveyor and fed into a rubber belt conveyor II together with the low-temperature bulk materials at the discharging end of the rubber belt conveyor I, and then fed into a ball mill by the rubber belt conveyor II;
4) The discharged materials of the ball mill are pumped to filtering equipment through a slurry pump, and the dehydrated mineral powder is reused.
Preferably, the wastewater of the cooling pond is fed into the ball mill through a drainage pump and a water supplementing pipe on a drainage pipeline for supplementing water for the ball mill.
Preferably, the wastewater generated by the filtering equipment is re-entered into the cooling tank 7 for recycling through a circulating water pipeline.
The invention has the advantages that:
1) Bulk materials in the production process can be completely recycled;
2) The environmental pollution caused by transporting bulk materials is reduced;
3) Powder materials entering the rotary kiln are reduced;
4) The risk of looping caused by powdery materials is reduced;
5) The operation rate of the pellet production line is improved;
6) The ore pulp is conveyed by a pipeline, so that the environment is not polluted;
7) The water is recycled, and no sewage is generated.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
As shown in figure 1, the invention relates to a system for treating cooked pellet bulk materials of a rotary kiln of a chain grate machine, which comprises the chain grate machine, a rotary kiln and a cooked pellet bulk material treatment device, wherein a high-temperature section of the chain grate machine is communicated with a kiln tail cover of the rotary kiln; the two bellows at the discharging end of the chain grate machine are used as a high Wen Sanliao section 2 of the bellows of the chain grate machine, the tail cover of the rotary kiln is used as a high-temperature bulk material section 1, the rest bellows of the chain grate machine is used as a low-temperature bulk material section 3 of the bellows of the chain grate machine, the cooked ball bulk material treatment device comprises a low-temperature bulk material conveying mechanism consisting of a rubber belt conveyor I4, a high Wen Sanliao treatment conveying mechanism, a rubber belt conveyor II 11, a ball mill 13, a slurry pump 14, a drainage pump 10 and a filtering device 15, the rubber belt conveyor I4 is arranged at the lower part of the low-temperature bulk material section 3 of the bellows of the chain grate machine and used for collecting low-temperature bulk materials, the cooling pond 7, a slag conveyor 8 and a steam collecting cover 6, the cooling pond 7 is arranged on a terrace of the high-temperature bulk material section 1 of the chain grate machine, the upper part of the bulk material buffering chamber 6 is arranged at the upper part of the cooling pond 7, the upper part of the bulk material buffering chamber 5 is arranged at the lower part of a drain port of the high Wen Sanliao of the bellows of the chain grate machine and the tail of the rotary kiln, and the steam collecting chamber 5 is arranged at the lower end of the drain pipe 6 through the cooling pond, and the steam collecting chamber is inserted into the steam collecting chamber 7;
the material receiving end of the belt conveyor II 11 is arranged at the lower part of the material discharging end of the belt conveyor I4, the slag dragging machine 8 is arranged in the cooling pond 7, the material discharging port of the slag dragging machine 8 and the material discharging end of the belt conveyor I4 are arranged at the upper part of the material receiving end of the belt conveyor II 11, the material discharging end of the belt conveyor II 11 is arranged at the upper part of the material feeding port of the ball mill 13, the material feeding end of the slurry pump 14 is communicated with the material discharging port of the ball mill 13, and the material discharging end of the slurry pump 14 is connected with the filtering equipment 15.
The invention is provided with a drainage pipeline 10-1 at the lower part of a cooling pool 7, a water supplementing pipe 10-2 is arranged on a ball mill 13, one end of the drainage pump 10 is communicated with the drainage pipeline 10-1, and the other end is communicated with the water supplementing pipe 10-2.
The bottom of the filtering equipment 15 is provided with a water outlet, and filtered water is communicated with the cooling pool 7 through a circulating water pipeline 9.
The invention relates to a processing technology of cooked pellet bulk materials of a rotary kiln of a chain grate machine, which is characterized by comprising the following steps:
1) The low-temperature bulk materials from the low-temperature bellows bulk material section 3 of the chain grate machine are delivered to the rubber belt conveyor I4 through the chute, and then are conveyed to the discharging end of the chain grate machine through the rubber belt conveyor I4;
2) The high Wen Sanliao from the Wen Sanliao section 2 of the air box of the chain grate machine and the high Wen Sanliao of the high-temperature bulk material section 1 of the kiln tail hood of the rotary kiln are jointly discharged into a bulk material buffer bin 5 through a chute;
3) The materials in the bulk material buffer bin fall into the cooling pool 7, the cooled bulk materials in the high temperature section are discharged from the chute of the ascending section of the slag conveyor 8, and are fed into the belt conveyor II 11 together with the low temperature bulk materials at the discharging end of the belt conveyor I4, and then are fed into the ball mill 13 by the belt conveyor II 11;
4) The discharged material of the ball mill 13 is sent to a filtering device 15 through a slurry pump 14, and the dehydrated mineral powder is reused.
In order to fully utilize the wastewater, the wastewater of the cooling tank 7 is fed into ball milling through a drainage pump 10 and a water supplementing pipe 10-2 on a drainage pipeline for supplementing water to a ball mill; the wastewater generated by the filtering device 15 enters the cooling pool 7 again through the circulating water pipeline 9 for recycling. The wastewater can be recycled, so that the water is saved, and the problem of wastewater pollution is solved.
Claims (6)
1. The system comprises a chain grate, a rotary kiln and a cooked sphere bulk material treatment device, wherein a high-temperature section of the chain grate is communicated with a kiln tail cover of the rotary kiln; the two bellows at the discharging end of the chain grate machine are taken as a high Wen Sanliao section of the bellows of the chain grate machine, the tail cover of the rotary kiln is taken as a high Wen Sanliao section, the rest bellows bulk materials of the chain grate machine are taken as a low-temperature bulk material section of the bellows of the chain grate machine, the cooked ball bulk material treatment device comprises a low-temperature bulk material conveying mechanism, a high Wen Sanliao treatment conveying mechanism, a rubber belt conveyor II, a ball mill, a slurry pump, a drainage pump and filtering equipment, wherein the rubber belt conveyor I is arranged at the lower part of the low-temperature bulk material section of the bellows of the chain grate machine and used for collecting low-temperature bulk materials, the high Wen Sanliao treatment conveying mechanism comprises a chute, a bulk material buffer bin, a cooling pond, a slag dragging machine and a steam collecting cover, the cooling pond is arranged on the terrace of the high-temperature bulk material section of the chain grate machine, the upper part of the steam collecting cover is arranged at the upper part of the cooling pond, the upper part of the bulk material buffer bin is arranged at the lower part of the discharge opening of the bellows of the high-temperature section of the chain grate machine and the tail Wen Sanliao of the rotary kiln, and the steam collecting cover is arranged at the lower end of the steam collecting cover through the steam collecting pond;
the material receiving end of the belt conveyor II is arranged at the lower part of the material discharging end of the belt conveyor I, the slag dragging machine is arranged in the cooling pond, the material discharging port of the slag dragging machine and the material discharging end of the belt conveyor I are arranged at the upper part of the material receiving end of the belt conveyor II, the material discharging end of the belt conveyor II is arranged at the upper part of the material feeding port of the ball mill, the material feeding end of the slurry pump is communicated with the material discharging port of the ball mill, and the material discharging end of the slurry pump is connected with the filtering equipment.
2. The system for processing the cooked pellet bulk material of the rotary kiln of the chain grate machine according to claim 1, wherein the system is characterized in that: the lower part of the cooling tank is provided with a drainage pipeline, the ball mill is provided with a water supplementing pipe, one end of the drainage pump is communicated with the drainage pipe, and the other end is communicated with the water supplementing pipe.
3. The system for treating the cooked pellet bulk material of the rotary kiln of the chain grate machine according to claim 1, which is characterized in that a water outlet is arranged at the bottom of the filtering equipment, and the filtered water is communicated with the cooling tank through a circulating water pipeline.
4. A process for treating cooked pellet bulk materials of a rotary kiln of a chain grate machine is characterized by comprising the following steps:
1) The low-temperature bulk materials from the bulk material section of the low-temperature bellows of the chain grate machine are delivered to the rubber belt conveyor I through the chute and then conveyed to the discharging end of the chain grate machine by the rubber belt conveyor I;
2) High Wen Sanliao of two bellows from the discharging end of the chain grate machine and high-temperature bulk materials of a high-temperature bulk material section of a kiln tail cover of the rotary kiln are jointly discharged into a bulk material buffer bin through a chute;
3) The materials in the bulk material buffer bin fall into a cooling pool, the cooled bulk materials in the high-temperature section are discharged from a chute of the rising section of the slag conveyor and fed into a rubber belt conveyor II together with the low-temperature bulk materials at the discharging end of the rubber belt conveyor I, and then fed into a ball mill by the rubber belt conveyor II;
4) The discharged materials of the ball mill are pumped to filtering equipment through a slurry pump, and the dehydrated mineral powder is reused.
5. The process for treating cooked pellet bulk material of rotary kiln of chain grate machine according to claim 4, characterized in that
The waste water of the cooling pool is fed into ball mill through a drainage pump and a water supplementing pipe on a drainage pipeline for supplementing water for the ball mill.
6. The process for treating the cooked pellet and bulk materials of the rotary kiln of the chain grate machine according to claim 4, wherein the wastewater generated by the filtering equipment is re-entered into the cooling pool for recycling through the circulating water pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148644.6A CN117778712A (en) | 2022-09-21 | 2022-09-21 | Process and device for treating cooked pellet bulk material of rotary kiln of chain grate machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148644.6A CN117778712A (en) | 2022-09-21 | 2022-09-21 | Process and device for treating cooked pellet bulk material of rotary kiln of chain grate machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117778712A true CN117778712A (en) | 2024-03-29 |
Family
ID=90383887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211148644.6A Pending CN117778712A (en) | 2022-09-21 | 2022-09-21 | Process and device for treating cooked pellet bulk material of rotary kiln of chain grate machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117778712A (en) |
-
2022
- 2022-09-21 CN CN202211148644.6A patent/CN117778712A/en active Pending
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