CN112121567A - Dedusting treatment system and method for flue gas of steel slag hot stewing pool - Google Patents
Dedusting treatment system and method for flue gas of steel slag hot stewing pool Download PDFInfo
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- CN112121567A CN112121567A CN202011101600.9A CN202011101600A CN112121567A CN 112121567 A CN112121567 A CN 112121567A CN 202011101600 A CN202011101600 A CN 202011101600A CN 112121567 A CN112121567 A CN 112121567A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003546 flue gas Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 65
- 239000002893 slag Substances 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000000428 dust Substances 0.000 claims abstract description 64
- 239000007921 spray Substances 0.000 claims abstract description 54
- 238000005406 washing Methods 0.000 claims abstract description 36
- 238000004062 sedimentation Methods 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 19
- 238000011010 flushing procedure Methods 0.000 claims description 17
- 239000006228 supernatant Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims 3
- 239000002245 particle Substances 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/025—Other waste gases from metallurgy plants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention relates to a dedusting treatment system for flue gas in a steel slag hot stewing pool, which comprises a spray tower, a pneumatic high-efficiency dedusting demister, a hydrocyclone, a process water tank, a sedimentation tank, a circulating pump, a slurry discharge pump and a demister washing water pump, wherein the spray tower can be connected with the steel slag hot stewing pool, and the spray tower is also connected with the pneumatic high-efficiency dedusting demister, the hydrocyclone and the process water tank. The system has high dust removal efficiency, and the removal rate of particles with the particle size of 1-5 um is more than 90 percent, and the removal rate of particles with the particle size of 10um is 100 percent.
Description
Technical Field
The invention belongs to the technical field of dust removal, and particularly relates to a system and a method for removing dust from flue gas in a steel slag hot stewing pool.
Background
The purpose of the steel slag treatment is to finish the cooling, pulverization and magnetic separation of high-temperature liquid steel slag generated in the steel-making (converter and electric furnace) process. The mainstream process for treating the steel slag of domestic iron and steel enterprises comprises the following steps: hot splashing method, hot stewing pool method and rollingThe hot-braising method, the roller method and the air quenching method, wherein the hot-braising pool method has the advantages of small investment, simple maintenance and low operating cost, and is favored by most iron and steel enterprises. In the process of treating the steel slag by the hot stewing pool method, the steel slag is loaded, slag is removed, water is pumped, a large amount of dust is generated, the dust treatment difficulty is high due to the characteristic of station layout of the hot stewing pool method, and at present, domestic steel enterprises using the hot stewing pool method do not carry out dust treatment on the link, so that the problem that the working environment of the link is severe, the dust pollution is serious, and the hot stewing pool method is the biggest scaling problem in treating the steel slag. With the release of new national environmental regulations, the unorganized emission standard is 8mg/m3How to treat the dust in the process of hot-stewing slag and reach the ultralow emission standard issued by the national ministry of environmental protection is an important difficulty faced by domestic iron and steel enterprises.
Through searching, the following two patent publications related to the patent application of the invention are found:
1. a method and system (CN 110694399A) for treating steel slag flue gas, wherein high-temperature liquid steel slag generated by steel making is conveyed into a hot stewing pool, water is sprayed into the hot stewing pool to cool and pulverize the high-temperature liquid steel slag to obtain dust-containing steam, the dust-containing steam is conveyed to a spray tower through a pipe network, the dust-containing steam is sprayed in the spray tower to obtain dust-containing flue gas, the dust-containing flue gas is dehydrated through a dehydrator to obtain dry flue gas, the dry flue gas is conveyed to a wet absorption tower through an induced draft fan, and the dry flue gas is discharged into the atmosphere after being dedusted and whitened by the wet absorption tower; the invention achieves the national ultra-low standard that the dust concentration is less than 10mg/m by sequentially treating the high-temperature liquid steel slag, then passing the treated high-temperature liquid steel slag through dust-containing steam, dust-containing flue gas and dry flue gas, finally filtering the treated high-temperature liquid steel slag through a wet absorption tower and then discharging the filtered high-temperature liquid steel slag into the atmosphere3The method meets the requirement of deep purification of the steel slag waste gas, and has the advantages of good dust removal effect, low cost, safety, environmental protection and no pollution.
2. The utility model provides a dust pelletizing system (CN 208018351U) for hot braising slag is handled, includes the entrapment cover, flue gas dewatering defogging device, flue gas heating device, dust collector, air exhauster and the emission chimney that connect gradually through the tuber pipe, just still through the supplementary grey device of scribbling in advance of pipe connection filter material on the tuber pipe between flue gas heating device and the dust collector, tuber pipe and dust collector all set up thermal-insulated heat preservation, a dust pelletizing system for hot braising slag is handled prevents that the flue gas dewfall deliquesces hardens, blocks up tuber pipe and dust removal filter material, causes the too early inefficacy of dust pelletizing system, extension dust pelletizing system's life.
By contrast, the present patent application is substantially different from the above patent publications.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a system and a method for dedusting and treating flue gas of a steel slag hot stewing pool.
In order to achieve the purpose, the invention adopts the technical scheme that:
a dedusting treatment system for flue gas in a steel slag hot stewing pool comprises a spray tower, a pneumatic high-efficiency dedusting demister, a hydrocyclone, a process water tank, a sedimentation tank, a circulating pump, a slurry discharge pump and a demister flushing water pump, wherein the spray tower can be connected with the steel slag hot stewing pool, and the spray tower is also connected with the pneumatic high-efficiency dedusting demister, the hydrocyclone and the process water tank;
the spray tower comprises a tower body, a flue gas inlet and a flue gas outlet, the tower body is arranged along the vertical direction, the flue gas inlet is communicated and arranged on the tower body, the tower body below the flue gas inlet can contain washing water, and the flue gas outlet is communicated and arranged at the top of the tower body; the flue gas inlet can be connected with dust-containing flue gas in the steel slag hot stewing pool, more than two washing sections are coaxially arranged in the tower body above the flue gas inlet from bottom to top at intervals, and the input ends of the washing sections are connected with washing water in the tower body below the flue gas inlet through a circulating pump; the pneumatic high-efficiency dust removal demister is coaxially arranged in the tower body above the uppermost washing section at intervals, a flushing pipeline is arranged at the upper end of the demister and is connected with the output end of a process water tank through a demister flushing water pump, water in the flushing pipeline can flush the pneumatic high-efficiency dust removal demister, and the process water tank can contain flushing water;
the input end of the hydrocyclone is connected with the middle-lower part in the tower body below the flue gas inlet through a slurry discharge pump, the hydrocyclone can be used for carrying out solid-liquid separation on a solution, the output end of the hydrocyclone comprises an overflow output end and an underflow output end, the overflow output end is connected with the middle-upper part in the tower body below the flue gas inlet, the underflow output end is connected with the input end of a sedimentation tank, the output end of the sedimentation tank comprises a supernatant output end, the supernatant output end is connected with the input end of a process water tank, and the input end of the process water tank can also be connected with a plant process water phase.
Moreover, the spray tower is a pneumatic high-efficiency dedusting and demisting spray tower.
And the spray tower is connected with the steel slag hot stewing pool through an induced draft fan.
And a clean water pump is arranged in the sedimentation tank, and the clean water pump can convey the supernatant to the spray tower for cyclic use.
And the flushing water contained in the process water tank is tap water.
The method for treating the flue gas of the steel slag hot stewing pool by using the dedusting treatment system for the flue gas of the steel slag hot stewing pool comprises the following specific steps of:
the method comprises the steps that dust-containing flue gas generated after a slag stewing pool is subjected to water spraying and cooling enters a spray tower, and clean water at the bottom end of the tower is conveyed to a water washing section through a circulating pump to spray and wash the dust-containing flue gas;
secondly, the flue gas after washing and dedusting is subjected to pneumatic high-efficiency dedusting demister to further remove dust and fog;
thirdly, conveying the dust-containing solution to a hydrocyclone by a slurry discharge pump, carrying out solid-liquid separation on the solution by the hydrocyclone, returning the top flow to the spray tower, and feeding the bottom flow into a sedimentation tank;
fourthly, conveying the supernatant in the settling pond into a spray tower for recycling;
fifthly, conveying the water in the process water tank to the upper end of the demister through a demister washing water pump, washing the demister through a washing pipeline and in the spray tower.
And the process water tank washes the demister and replenishes water to the spray tower.
The invention has the advantages and effects that:
1. the system has high dust removal efficiency, and the removal rate of particles with the particle size of 1-5 um is more than 90 percent, and the removal rate of particles with the particle size of 10um is 100 percent.
2. The system of the invention integrates the smoke tower into one, thus effectively saving investment and occupied area.
3. The system adopts a pneumatic high-efficiency dedusting and demisting technology, a cyclone plate is additionally arranged in a multistage double-pneumatic cyclone dedusting and demisting device cylinder to enable flue gas to rotate in the cyclone cylinder, severe rotation and disturbance of gas-liquid phases are formed above the cyclone device, so that fine liquid drops, fine dust particles, aerosol and other fine particles in the flue gas collide with each other and are agglomerated into large liquid drops, then the flue gas is enabled to move outwards in a centrifugal mode under the structural action of the pneumatic cyclone device, the large liquid drops formed by polymerization collide with the cyclone cylinder wall and are captured and absorbed by a liquid film of the cyclone cylinder wall, and the high-efficiency dedusting and demisting are realized through regular washing of washing water.
4. The method adopts a combined technology of wet dust removal and pneumatic high-efficiency dust removal and demisting, has good dust removal effect, low operating cost, safety, environmental protection and no secondary pollution, and ensures that the emission of dust-containing gas is less than 10mg/m3And the emission standard required by the state is achieved.
Drawings
FIG. 1 is a schematic view of a structural connection of the dust-removing treatment system of the present invention.
Detailed Description
The present invention will be further described with reference to specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
Structures, connection relations and the like which are not described in detail in the invention can be understood as conventional technical means in the field; the methods used in the present invention are conventional in the art unless otherwise specified.
A dedusting treatment system for flue gas in a steel slag hot stewing pool is shown in figure 1 and comprises a spray tower, a pneumatic high-efficiency dedusting demister 2, a hydrocyclone 11, a process water tank 10, a sedimentation tank 8, a circulating pump 6, a slurry discharge pump 7 and a demister washing water pump 9, wherein the spray tower can be connected with the steel slag hot stewing pool 5, and the spray tower is also connected with the pneumatic high-efficiency dedusting demister, the hydrocyclone and the process water tank;
the spray tower comprises a tower body 3, a flue gas inlet 12 and a flue gas outlet 1, wherein the tower body is arranged along the vertical direction, the flue gas inlet is communicated and arranged on the tower body, the tower body below the flue gas inlet can contain water for washing, and the flue gas outlet is communicated and arranged at the top of the tower body; the flue gas inlet can be connected with dust-containing flue gas in the steel slag hot stewing pool, more than two washing sections 4 are coaxially arranged in the tower body above the flue gas inlet from bottom to top at intervals, and the input ends of the washing sections are connected with washing water in the tower body below the flue gas inlet through a circulating pump; the pneumatic high-efficiency dust removal demister is coaxially arranged in the tower body above the uppermost washing section at intervals, a flushing pipeline is arranged at the upper end of the demister and is connected with the output end of a process water tank through a demister flushing water pump, water in the flushing pipeline can flush the pneumatic high-efficiency dust removal demister, and the process water tank can contain flushing water;
the input end of the hydrocyclone is connected with the middle-lower part in the tower body below the flue gas inlet through a slurry discharge pump, the hydrocyclone can be used for carrying out solid-liquid separation on a solution, the output end of the hydrocyclone comprises an overflow output end and an underflow output end, the overflow output end is connected with the middle-upper part in the tower body below the flue gas inlet, the underflow output end is connected with the input end of a sedimentation tank, the output end of the sedimentation tank comprises a supernatant output end, the supernatant output end is connected with the input end of a process water tank, and the input end of the process water tank can also be connected with a plant process water phase.
In this embodiment, the spray tower is a pneumatic high-efficiency dust-removing and mist-removing spray tower.
In this embodiment, the spray tower is connected with the steel slag hot stewing pond through the induced draft fan.
In this embodiment, be equipped with the clarified water pump in the sedimentation tank, the clarified water pump can carry the supernatant to spray column internal recycle.
In this embodiment, the flushing water contained in the process tank is tap water.
The method for treating the flue gas of the steel slag hot stewing pool by using the dedusting treatment system for the flue gas of the steel slag hot stewing pool comprises the following specific steps of:
(1) the dust-containing flue gas generated after the slag stewing pool is cooled by water spraying enters a spray tower, and clear water at the bottom end of the tower is conveyed to a water washing section through a circulating pump to spray and wash the dust-containing flue gas;
(2) the flue gas after washing and dedusting is subjected to pneumatic high-efficiency dedusting demister to further remove dust and fog;
(3) the slurry discharge pump conveys the dust-containing solution to a hydrocyclone, the hydrocyclone carries out solid-liquid separation on the solution, the top flow returns to the spray tower, and the bottom flow enters a sedimentation tank;
(4) conveying the supernatant in the sedimentation tank into a spray tower for recycling;
(5) the water in the process water tank is delivered to a washing pipeline at the upper end of the demister and a spray tower through a demister washing water pump, and the washing pipeline washes the demister.
Preferably, the process water tank flushes the demister and replenishes water to the spray tower.
One working principle of the invention may be as follows:
the invention relates to a method for dedusting and treating flue gas in a steel slag hot stewing pool, which comprises the steps of conveying high-temperature liquid steel slag generated in a steel-making (converter and electric furnace) process into the hot stewing pool, injecting water into the hot stewing pool to cool the high-temperature liquid steel slag, conveying dust-containing steam generated in the process to a spray tower through a draught fan through a pipeline, arranging two layers of water washing sections in the spray tower to spray and wash the dust-containing steam, and arranging a pneumatic high-efficiency dedusting demister on the upper part of the spray tower to further remove dust and fog. And when the concentration of slurry and dust in the tower is higher, the solution is conveyed to the hydrocyclone by the drainage pump, the top of the hydrocyclone flows back to the spray tower, and the bottom flows into the sedimentation tank. The sedimentation tank is provided with a clean water pump, the clean water pump conveys supernatant to the spray tower for recycling, and the process water tank washes the demister and replenishes water for the spray tower through a demister washing water pump.
The method adopts the combined technology of wet dust removal and pneumatic high-efficiency dust removal and demisting to ensure that the discharge of the dust-containing gas is less than 10mg/m3And the emission standard required by the state is achieved. The invention has good dust removal effect, low operation cost, safety, environmental protection and no secondary pollution.
Although the embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments disclosed.
Claims (7)
1. The utility model provides a dust removal processing system of steel slag hot braising pond flue gas which characterized in that: the system comprises a spray tower, a pneumatic high-efficiency dust and mist removal device, a hydraulic cyclone, a process water tank, a sedimentation tank, a circulating pump, a slurry discharge pump and a mist removal flushing water pump, wherein the spray tower can be connected with the steel slag hot stewing tank, and is also connected with the pneumatic high-efficiency dust and mist removal device, the hydraulic cyclone and the process water tank;
the spray tower comprises a tower body, a flue gas inlet and a flue gas outlet, the tower body is arranged along the vertical direction, the flue gas inlet is communicated and arranged on the tower body, the tower body below the flue gas inlet can contain washing water, and the flue gas outlet is communicated and arranged at the top of the tower body; the flue gas inlet can be connected with dust-containing flue gas in the steel slag hot stewing pool, more than two washing sections are coaxially arranged in the tower body above the flue gas inlet from bottom to top at intervals, and the input ends of the washing sections are connected with washing water in the tower body below the flue gas inlet through a circulating pump; the pneumatic high-efficiency dust removal demister is coaxially arranged in the tower body above the uppermost washing section at intervals, a flushing pipeline is arranged at the upper end of the demister and is connected with the output end of a process water tank through a demister flushing water pump, water in the flushing pipeline can flush the pneumatic high-efficiency dust removal demister, and the process water tank can contain flushing water;
the input end of the hydrocyclone is connected with the middle-lower part in the tower body below the flue gas inlet through a slurry discharge pump, the hydrocyclone can be used for carrying out solid-liquid separation on a solution, the output end of the hydrocyclone comprises an overflow output end and an underflow output end, the overflow output end is connected with the middle-upper part in the tower body below the flue gas inlet, the underflow output end is connected with the input end of a sedimentation tank, the output end of the sedimentation tank comprises a supernatant output end, the supernatant output end is connected with the input end of a process water tank, and the input end of the process water tank can also be connected with a plant process water phase.
2. The system for dedusting and treating the flue gas of the steel slag hot stewing pool according to the claim 1 is characterized in that: the spray tower is a pneumatic high-efficiency dust-removing demisting spray tower.
3. The system for dedusting and treating the flue gas of the steel slag hot stewing pool according to the claim 1 is characterized in that: the spray tower is connected with the steel slag hot stewing pool through a draught fan.
4. The system for dedusting and treating the flue gas of the steel slag hot stewing pool according to the claim 1 is characterized in that: and a clear water pump is arranged in the sedimentation tank and can convey the supernatant to the spray tower for cyclic use.
5. The system for dedusting and processing the flue gas of the steel slag hot stewing pool according to any one of claims 1 to 4, is characterized in that: the flushing water contained in the process water tank is tap water.
6. The method for treating the flue gas of the steel slag hot-braising pool by using the dedusting treatment system of the flue gas of the steel slag hot-braising pool as claimed in any one of claims 1 to 5, is characterized in that: after the flue gas passes through the pneumatic high-efficient dust removal defogging spray column, discharge from the top chimney to realize the flue-gas column unification, concrete step is as follows:
the method comprises the steps that dust-containing flue gas generated after a slag stewing pool is subjected to water spraying and cooling enters a spray tower, and clean water at the bottom end of the tower is conveyed to a water washing section through a circulating pump to spray and wash the dust-containing flue gas;
secondly, the flue gas after washing and dedusting is subjected to pneumatic high-efficiency dedusting demister to further remove dust and fog;
thirdly, conveying the dust-containing solution to a hydrocyclone by a slurry discharge pump, carrying out solid-liquid separation on the solution by the hydrocyclone, returning the top flow to the spray tower, and feeding the bottom flow into a sedimentation tank;
fourthly, conveying the supernatant in the settling pond into a spray tower for recycling;
fifthly, conveying the water in the process water tank to the upper end of the demister through a demister washing water pump, washing the demister through a washing pipeline and in the spray tower.
7. The method of claim 6, wherein: the process water tank washes the demister and replenishes water to the spray tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011101600.9A CN112121567A (en) | 2020-10-15 | 2020-10-15 | Dedusting treatment system and method for flue gas of steel slag hot stewing pool |
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| CN202011101600.9A CN112121567A (en) | 2020-10-15 | 2020-10-15 | Dedusting treatment system and method for flue gas of steel slag hot stewing pool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933832A (en) * | 2021-02-01 | 2021-06-11 | 于萍 | Waste gas purification device and process in stainless steel slag treatment |
| CN113893627A (en) * | 2021-10-15 | 2022-01-07 | 航天环境工程有限公司 | Dust treatment system and method in slag dumping and dragging process of steel slag hot-stewing pool |
| CN115657773A (en) * | 2022-12-27 | 2023-01-31 | 北京博鹏中科环保科技有限公司 | Steel slag flue gas treatment system and control method thereof |
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