CN102367499A - Technology for producing cold-bonded pellets from dust collected by converter dry dedusting - Google Patents
Technology for producing cold-bonded pellets from dust collected by converter dry dedusting Download PDFInfo
- Publication number
- CN102367499A CN102367499A CN2011102580597A CN201110258059A CN102367499A CN 102367499 A CN102367499 A CN 102367499A CN 2011102580597 A CN2011102580597 A CN 2011102580597A CN 201110258059 A CN201110258059 A CN 201110258059A CN 102367499 A CN102367499 A CN 102367499A
- Authority
- CN
- China
- Prior art keywords
- chain transport
- transport machine
- compound
- converter
- finished product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 34
- 239000008188 pellet Substances 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 230000029087 digestion Effects 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 230000032258 transport Effects 0.000 claims description 47
- 150000001875 compounds Chemical class 0.000 claims description 35
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000012216 screening Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000001079 digestive effect Effects 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000003245 working effect Effects 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 9
- 238000009628 steelmaking Methods 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000005453 pelletization Methods 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 25
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012946 outsourcing Methods 0.000 description 3
- 241001504664 Crossocheilus latius Species 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 201000001883 cholelithiasis Diseases 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a technology for producing cold-bonded pellets from dust collected by converter dry dedusting, and belongs to the technical field of resource comprehensive utilization and environmental protection. Equipment adopted by the technology comprises a raw material system, a digestion system, a mixing and grinding system, a pelletizing system, a product finishing system and a conveying system. The technology is mainly utilized for recovery of a metallic iron element in dust collected by converter dry dedusting. Through the processes of raw material preparation, digestion, mixing and grinding, compression pelletizing and surface curing, the technology produces cold-bonded pellets from dust collected by converter dry dedusting, wherein the produced cold-bonded pellets satisfy converter use requirements. The produced cold-bonded pellets can replace iron ore or pellet ore to be utilized as cooling agents and slag formers for converter steel-making and to be recycled in a converter, and thus an iron-containing resource buying cost is greatly reduced; economic benefits and social benefits are improved obviously; and a recycling economy mode is realized.
Description
Technical field
The invention belongs to comprehensive utilization of resources and environmental protection technical field; Particularly provide a kind of converter dry method dust ash cooling solid pellet formation technology; Reclaim the metallic iron element in the converter dry method dust ash to greatest extent; Reduce the expense of outsourcing iron-containing resource, and advance iron and steel enterprise's solid waste comprehensive utilization, develop a circular economy.
Background technology
Contain a large amount of iron dust containings in the flue gas that produces in the convertor steelmaking process, domestic each big steel mill has adopted the higher dry dedusting technology of efficiency of dust collection successively at present.The dedusting ash that coal gas of converter produces behind dry method dust is metal and the non-metallic minerals particulate that produces in the high-temperature smelting process; Granularity more than 80% is 5～76.4 μ m; Belong to high fine powder state material, its staple is Fe and Ca, also has a spot of solid C; Having fine size, characteristics that iron-holder is high, is valuable secondary resource.Through converter dry method dust ash is carried out feedstock analysis, charge calculation, adopt the cooled agglomerated pellet production technique, produce the cooled agglomerated pellet that meets the converter request for utilization.Alternative iron ore of cooled agglomerated pellet or pellet reduce the expense of outsourcing iron-containing resource as refrigerant, the slag former reuse converter of converter steelmaking, and economic benefit and obvious social benefit meet the recycling economy pattern.
The solid pellet formation technology of converter dry method dust ash cooling is through converter dry method dust ash being carried out feedstock analysis, charge calculation, producing the cooled agglomerated pellet that meets the converter request for utilization.In convertor steelmaking process, add cooled agglomerated pellet and can increase the FeO content in the converter steelmaking pre-slag; Accelerate slagging speed; Improve the converter pre-slag formation speed and mid-term slag physical and chemical performance; Improve taking off P, take off the S effect in the smelting process, also can reduce the input of other slag charges simultaneously, simplify converter flushing and casting.In convertor steelmaking process, add cooled agglomerated pellet converter steelmaking initial stage basicity of slag is improved, the solubleness of MgO in slag is reduced, reduce lining erosion, help improving converter lining life.
Summary of the invention
The object of the present invention is to provide the solid pellet formation technology of a kind of converter dry method dust ash cooling, improve the recovery of metallic iron element in the converter dry method dust ash to greatest extent, enlarge the degree of depth of iron and steel enterprise's comprehensive utilization.This production technique is rationally compact, floor space is little, and operation is simple, and low, the less investment of energy consumption is not only an economy but also rational cooled agglomerated pellet production line, has good economic benefit and social benefit.
The equipment (on-the-spot existing) of realizing technology of the present invention comprises former feed bin, twin shaft humidifier, chain transport machine, chapelet, slaking silos, mixing pan, pair roller preformer, smash machine, conveyor, high angle belt conveyer machine, finished product oven dry storehouse, entrucking conveyor, returning charge worm conveyor, vibratory screening apparatus, crane, and concrete technical process sees Fig. 1 for details.
Converter dry method dust ash; A kind of is the isolated coarse particles of gravitational dust collection, another kind of then be the fine particle ash that electric precipitation produces, and the form that two kinds of dedusting ash all adopt tank car to carry transports into former feed bin; Former feed bin can be provided with a plurality of dry ashes storehouse, and one of fly-ash separator is established at the top of each former feed bin.
Converter dry method dust ash in making the ball process in 20～30% ratio with addition of iron scale or fine ore as the aggregate of gaining in strength; Active CaO content is higher in the converter dry method dust ash in addition; In making the ball process, need humidification digestion; Otherwise efflorescence very easily takes place in the finished product cold-pressing balls, and ball intensity is made in influence.Converter dry method dust ash is discharged into the 1# chain transport machine after unloading valve under the former feed bin is sent into twin shaft humidifier water spray humidification; With addition of aggregate iron scale or fine ore through screening, remove behind the large granular impurity in 20～30% ratio with addition of, send into the 1# chain transport machine by 3# material loading endless belt conveyor.Converter dry method dust ash and send into 1# bucket elevator → 2# chain transport machine by the 1# chain transport machine with addition of the aggregate of going into; By the 2# chain transport machine compound is sent into slaking silos again; Compound is accomplished digestive process in slaking silos; For preventing digestive process corrosion bulkhead, the slaking silos first half is a concrete storehouse wall, and Lower Half is the steel plate bulkhead.
Postdigestive compound is discharged into the 3# chain transport machine through star-like unloading valve under the slaking silos; By the 3# chain transport machine compound is sent into 3# twin shaft humidifier again; The environmental dust removal ash is also through carrying facility to send into 3# twin shaft humidifier in the factory; Press 10～15% proportioning adding tackiness agent simultaneously, compound is sent into respectively in the raw material intermediate bin of mixing pan top by 4# chain transport machine, electronic unloading valve through 3# twin shaft humidifier → 2# bucket elevator → 4# chain transport machine again; Each raw material intermediate bin below is provided with 1 mixing pan; Star-like unloading valve under the intermediate bin compound is sent in the mixing pan at regular time and quantity, compound mixes stirring fully with tackiness agent in mixing pan, accomplishes to mix the 5# chain transport machine that compound is discharged into the mixing pan below after grinding and get into next procedure.
For further improving the density of compound, through the feeding of 5# chain transport machine, press the pair roller preformer to carry out compaction treatment from the compound that mixing pan comes out, the material after the compacting is admitted to the 3# bucket elevator.
The 3# bucket elevator promotes feeding 6# chain transport machine with compound; Compound is sent into the compound intermediate bin through 6# chain transport machine, electronic unloading valve; Through unloading valve under the storehouse, chute feeding smash machine, under high pressure push balling-up after, be discharged into the 1# endless belt conveyor of smash machine below.
Finished ball is sent into slide sieve through the 1# endless belt conveyor and is sieved; Screen underflow passes on into the 1# chain transport machine through the 7# chain transport machine, returns production line, and the qualified finished product of screen overflow is sent into finished product oven dry storehouse through the 2# large inclination belt conveyor; 1 induced draft fan is set sleeve kiln waste gas is introduced finished product oven dry storehouse; Accomplish the drying and the surface hardening of finished ball, further improve finished ball intensity, exhaust pipeline is provided with insulation.Material is sent into the 1# chain transport machine less than the screen underflow of 10mm through the returning charge spiral and is returned production line after screening facility in below sieves in the oven dry storehouse, through the endless belt conveyor entrucking, transports steelshop greater than the screen overflow of 10mm to.Weighing belt is set on the endless belt conveyor, realizes the finished product metering.
The present invention can realize the whole process of full converter dry method dust ash " online digestion, online mixed stone roller, online pressure ball, online baking and curing ", and whole process of production converter dust-removing ash does not land, and has effectively avoided second environmental pollution.
The slaking silos first half is designed to the concrete structure bulkhead, and Lower Half is the steelwork bulkhead, has prevented that effectively compound from corroding bulkhead in digestive process, prolongs the work-ing life of slaking silos.
Through handling equipment is sent into, press the pair roller baler to carry out compaction treatment from the compound that mixing pan comes out, obtain the compound of higher density, make ball for next step high pressure and create favorable conditions.
Finished product oven dry storehouse is designed to be able to that integrated article store, finished product oven dry, finished product screening are one; The sleeve kiln exhaust gas is introduced finished product oven dry storehouse; Finished ball is dried and the surface cure processing, both effectively utilized the waste heat of sleeve kiln exhaust gas, improved the intensity of finished ball again.
The environmental dust removal ash of production line returns production line again as raw material and makes ball, no solid exhaust gas emission after fly-ash separator is collected, transported.
The solid pellet formation technology of converter dry method dust ash cooling makes converter dry method dust ash through links such as " batching-digestion-mixed stone roller-pressure ball-surface cure ", and final production goes out to meet the cooled agglomerated pellet of converter request for utilization.Alternative iron ore of cooled agglomerated pellet or pellet be as refrigerant, the slag former reuse converter of converter steelmaking, thereby reduce the expense of outsourcing iron-containing resource greatly, and economic benefit and obvious social benefit meet the recycling economy pattern.
Technology of the present invention has the connection and reasonable arrangement compactness, floor space is little, and operation is simple, and energy consumption is low, the characteristics of less investment.
Description of drawings
Fig. 1 is a kind of process flow sheet of the present invention.
Fig. 2 is an equipment synoptic diagram of realizing this technology.Wherein, Former feed bin 1, twin shaft humidifier 2, chain transport machine 3, grab bucket hang 4, vibratory screening apparatus 5, chapelet 6, slaking silos 7, mixing pan 8, pair roller preformer 9, smash machine 10, conveyor 11, high angle belt conveyer machine 12, finished product oven dry storehouse 13, entrucking conveyor 14, returning charge worm conveyor 15, and suspension hangs 16.
Embodiment
Shown in figure; The equipment of realizing the solid pellet formation technology of converter dry method dust ash cooling comprises: former feed bin 1, twin shaft humidifier 2, chain transport machine 3, grab bucket hang 4, vibratory screening apparatus 5, chapelet 6, slaking silos 7, mixing pan 8, pair roller preformer 9, smash machine 10, conveyor 11, high angle belt conveyer machine 12, finished product oven dry storehouse 13, entrucking conveyor 14, returning charge worm conveyor 15; Suspension hangs 16, and the practical implementation step is described below:
1. the converter dry method dust of two kinds of different fineness ash all adopts form that tank car carries charging feed cinder storehouse and the thin grey storehouse of raw material respectively, sends into twin shaft humidifier at the bottom of the storehouse by unloading valve under the former feed bin again, feeds chain transport machine behind the raw material humidification.Iron scale or fine ore are hung by grab bucket and send into the vibratory screening apparatus hopper, remove large granular impurity through bolting, and screen underflow feeds chain transport machine by conveyor.
2. compound is sent into slaking silos by chain transport machine, chapelet and is fully digested; Digestion time is 24 hours; Send into mixing pan by twin shaft humidifier, chapelet again and mix stone roller; Simultaneously tackiness agent is added, compound mixes stirring fully with tackiness agent in mixing pan, and the time is 6 minutes.
3. send into middle pressure pair roller preformer by chain transport machine, chapelet after the compound completion mixes and grinds and carry out compaction treatment, obtain the compound of higher density.
4. the compound after the compacting is made ball through worm conveyor, chapelet, chain transport machine feeding smash machine.After compound under high pressure pushes balling-up; Unload the conveyor of goal machine below, through slide sieve, finished ball is tentatively sieved then; Screen underflow returns through the chain transport machine transhipment and makes ball production line; Screen overflow is sent into finished product oven dry storehouse through large inclination belt conveyor, and finished ball is carried out drying and surface hardening, further improves finished ball intensity.
5. finished ball is after the screening facility screening of bottom, finished product oven dry storehouse; Send into chain transport machine less than the screen underflow of 10mm through the returning charge spiral and return and make ball production line, through the endless belt conveyor entrucking, transport steelshop to greater than the screen overflow of 10mm; Weighing belt is set on the endless belt conveyor, realizes the finished product metering.
Though described embodiment of the present invention in conjunction with accompanying drawing, those of ordinary skill in the art can make various distortion or modification in the scope of said claim.
Claims (3)
1. the solid pellet formation technology of converter dry method dust ash cooling realizes that the equipment of this technology comprises former feed bin, twin shaft humidifier, chain transport machine, chapelet, slaking silos, mixing pan, pair roller preformer, smash machine, conveyor, high angle belt conveyer machine, finished product oven dry storehouse, entrucking conveyor, returning charge worm conveyor, vibratory screening apparatus, crane; It is characterized in that process step is:
Converter dry method dust ash in making the ball process in 20～30% ratio with addition of iron scale or fine ore as the aggregate of gaining in strength; Humidification digestion active CaO in making the ball process; Converter dry method dust ash is discharged into the 1# chain transport machine after unloading valve under the former feed bin is sent into twin shaft humidifier water spray humidification; With addition of aggregate iron scale or fine ore through screening, remove behind the large granular impurity in 20～30% ratio with addition of, send into the 1# chain transport machine by 3# material loading endless belt conveyor; Converter dry method dust ash and send into 1# bucket elevator → 2# chain transport machine by the 1# chain transport machine with addition of the aggregate of going into is sent compound into slaking silos by the 2# chain transport machine again, and compound is accomplished digestive process in slaking silos;
Postdigestive compound is discharged into the 3# chain transport machine through star-like unloading valve under the slaking silos; By the 3# chain transport machine compound is sent into 3# twin shaft humidifier again; The environmental dust removal ash is also through carrying facility to send into 3# twin shaft humidifier in the factory; Press 10～15% proportioning adding tackiness agent simultaneously, compound is sent into respectively in the raw material intermediate bin of mixing pan top by 4# chain transport machine, electronic unloading valve through 3# twin shaft humidifier → 2# bucket elevator → 4# chain transport machine again; Each raw material intermediate bin below is provided with 1 mixing pan; Star-like unloading valve under the intermediate bin compound is sent in the mixing pan at regular time and quantity, compound mixes stirring fully with tackiness agent in mixing pan, accomplishes to mix compound to be discharged into the 5# chain transport machine of mixing pan below after grinding;
Through the feeding of 5# chain transport machine, press the pair roller preformer to carry out compaction treatment from the compound that mixing pan comes out, the material after the compacting is admitted to the 3# bucket elevator;
The 3# bucket elevator promotes feeding 6# chain transport machine with compound; Compound is sent into the compound intermediate bin through 6# chain transport machine, electronic unloading valve; Through unloading valve under the storehouse, chute feeding smash machine, under high pressure push balling-up after, be discharged into the 1# endless belt conveyor of smash machine below.
Finished ball is sent into slide sieve through the 1# endless belt conveyor and is sieved; Screen underflow passes on into the 1# chain transport machine through the 7# chain transport machine; Return production line, the qualified finished product of screen overflow is sent into finished product oven dry storehouse through the 2# large inclination belt conveyor, 1 induced draft fan is set sleeve kiln waste gas is introduced finished product oven dry storehouse; Accomplish the drying and the surface hardening of finished ball, exhaust pipeline is provided with insulation; Material is sent into the 1# chain transport machine less than the screen underflow of 10mm through the returning charge spiral and is returned production line after screening facility in below sieves in the oven dry storehouse, through the endless belt conveyor entrucking, transports steelshop greater than the screen overflow of 10mm to; Weighing belt is set on the endless belt conveyor, realizes the finished product metering.
2. the solid pellet formation technology of converter dry method dust ash cooling according to claim 1; It is characterized in that: the slaking silos first half is designed to the concrete structure bulkhead; Lower Half is the steelwork bulkhead, has prevented that effectively compound from corroding bulkhead in digestive process, prolongs the work-ing life of slaking silos.
3. the solid pellet formation technology of converter dry method dust ash cooling according to claim 1; It is characterized in that: finished product oven dry storehouse is designed to be able to that integrated article store, finished product oven dry, finished product screening are one; The sleeve kiln exhaust gas is introduced finished product oven dry storehouse, finished ball is dried with surface cure handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102580597A CN102367499B (en) | 2011-09-02 | 2011-09-02 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102580597A CN102367499B (en) | 2011-09-02 | 2011-09-02 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102367499A true CN102367499A (en) | 2012-03-07 |
| CN102367499B CN102367499B (en) | 2013-07-17 |
Family
ID=45760089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102580597A Active CN102367499B (en) | 2011-09-02 | 2011-09-02 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367499B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921624A (en) * | 2012-11-06 | 2013-02-13 | 河南博奥建设股份有限公司 | Automatic screening machine for steel balls |
| CN102978387A (en) * | 2012-11-22 | 2013-03-20 | 北京科大国泰能源环境工程技术有限公司 | Process for producing cold-bonded pellet by using fly ash in steel solid waste |
| CN103014237A (en) * | 2012-12-14 | 2013-04-03 | 首钢总公司 | Dephosphorization slag forming constituent and production method thereof |
| CN103318625A (en) * | 2013-03-14 | 2013-09-25 | 重庆万盛浮法玻璃有限公司 | Loading sand-discharging system for float glass production line |
| CN104109755A (en) * | 2014-07-30 | 2014-10-22 | 中冶南方工程技术有限公司 | Production system and method of cold-pressed metal pellets of fly ashes |
| CN104232888A (en) * | 2013-06-21 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Method for preparing cooled agglomerated pellets by using dry method electric fly ash of converter gas |
| CN107119187A (en) * | 2017-05-18 | 2017-09-01 | 天津瑞利鑫环保科技有限公司 | A kind of dedusting ash cold-consolidated ball production system and technique |
| CN108277342A (en) * | 2018-02-27 | 2018-07-13 | 首钢京唐钢铁联合有限责任公司 | Method for producing cold-bonded pellets |
| CN110273067A (en) * | 2019-07-25 | 2019-09-24 | 武汉钢铁有限公司 | A method of sintering utilizes dedusting ash |
| CN110355107A (en) * | 2018-04-09 | 2019-10-22 | 中冶宝钢技术服务有限公司 | Steel slag metal charge refines system and refining technique |
| CN110468274A (en) * | 2019-09-26 | 2019-11-19 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Electric furnace ash prepares cold-consolidated ball Processes and apparatus |
| CN110669921A (en) * | 2019-10-18 | 2020-01-10 | 甘肃酒钢集团宏兴钢铁股份有限公司 | System and method for resourcefully treating steelmaking secondary dedusting ash |
| CN110724814A (en) * | 2019-11-25 | 2020-01-24 | 洛阳凯正环保工艺设备有限公司 | Preparation process of high-calcium iron-containing dedusting ash cold-bonded pellets |
| CN110747345A (en) * | 2019-11-05 | 2020-02-04 | 邯郸钢铁集团有限责任公司 | Converter fly ash pressed brick and preparation and utilization methods thereof |
| CN110894576A (en) * | 2018-09-13 | 2020-03-20 | 中冶宝钢技术服务有限公司 | Metallurgical auxiliary material and preparation method thereof |
| CN111961868A (en) * | 2020-08-07 | 2020-11-20 | 阳春新钢铁有限责任公司 | Digestion preparation method of converter waste sludge |
| CN112410499A (en) * | 2020-10-09 | 2021-02-26 | 广东华欣环保科技有限公司 | Digestion device and digestion method for free calcium oxide in converter fly ash |
| CN113846211A (en) * | 2021-10-27 | 2021-12-28 | 重庆臻焱节能环保科技有限公司 | Cold-pressed ball production process based on fly ash |
| CN114736004A (en) * | 2022-03-29 | 2022-07-12 | 何猛 | Wet briquetting production process and production line of light-burned magnesium, calcium-synthesized magnesium and aluminum-magnesium |
| CN115652081A (en) * | 2022-11-07 | 2023-01-31 | 湖南信港实业有限公司 | Dry powder material granulation process of rotary hearth furnace for treating iron-containing zinc-containing metallurgical dust and sludge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158903A (en) * | 1996-12-03 | 1997-09-10 | 吕美竺 | Industrial production method of cold-cured pellet used directly for iron and steel smelting |
| CN101519722A (en) * | 2009-03-25 | 2009-09-02 | 韶关市曲江盛大工业物资有限公司 | Method for utilizing iron containing metallurgical dust |
-
2011
- 2011-09-02 CN CN2011102580597A patent/CN102367499B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158903A (en) * | 1996-12-03 | 1997-09-10 | 吕美竺 | Industrial production method of cold-cured pellet used directly for iron and steel smelting |
| CN101519722A (en) * | 2009-03-25 | 2009-09-02 | 韶关市曲江盛大工业物资有限公司 | Method for utilizing iron containing metallurgical dust |
Non-Patent Citations (2)
| Title |
|---|
| 孙锦彪等: "电炉灰造球回用的设想", 《江苏冶金》 * |
| 徐兵等: "宝钢转炉尘泥冷固球团生产及返回转炉应用", 《宝钢技术》 * |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921624A (en) * | 2012-11-06 | 2013-02-13 | 河南博奥建设股份有限公司 | Automatic screening machine for steel balls |
| CN102921624B (en) * | 2012-11-06 | 2016-05-25 | 河南博奥建设有限公司 | Steel ball automatic screening machine |
| CN102978387A (en) * | 2012-11-22 | 2013-03-20 | 北京科大国泰能源环境工程技术有限公司 | Process for producing cold-bonded pellet by using fly ash in steel solid waste |
| CN103014237A (en) * | 2012-12-14 | 2013-04-03 | 首钢总公司 | Dephosphorization slag forming constituent and production method thereof |
| CN103014237B (en) * | 2012-12-14 | 2015-02-25 | 首钢总公司 | Dephosphorization slag forming constituent and production method thereof |
| CN103318625A (en) * | 2013-03-14 | 2013-09-25 | 重庆万盛浮法玻璃有限公司 | Loading sand-discharging system for float glass production line |
| CN103318625B (en) * | 2013-03-14 | 2015-07-15 | 重庆万盛浮法玻璃有限公司 | Loading sand-discharging system for float glass production line |
| CN104232888A (en) * | 2013-06-21 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Method for preparing cooled agglomerated pellets by using dry method electric fly ash of converter gas |
| CN104109755A (en) * | 2014-07-30 | 2014-10-22 | 中冶南方工程技术有限公司 | Production system and method of cold-pressed metal pellets of fly ashes |
| CN104109755B (en) * | 2014-07-30 | 2016-04-20 | 中冶南方工程技术有限公司 | A kind of dedusting ash is colded pressing metal pelletizing production system and method |
| CN107119187B (en) * | 2017-05-18 | 2018-08-28 | 天津瑞利鑫环保科技有限公司 | A kind of dedusting ash cold-consolidated ball production system and technique |
| CN107119187A (en) * | 2017-05-18 | 2017-09-01 | 天津瑞利鑫环保科技有限公司 | A kind of dedusting ash cold-consolidated ball production system and technique |
| CN108277342A (en) * | 2018-02-27 | 2018-07-13 | 首钢京唐钢铁联合有限责任公司 | Method for producing cold-bonded pellets |
| CN110355107A (en) * | 2018-04-09 | 2019-10-22 | 中冶宝钢技术服务有限公司 | Steel slag metal charge refines system and refining technique |
| CN110894576A (en) * | 2018-09-13 | 2020-03-20 | 中冶宝钢技术服务有限公司 | Metallurgical auxiliary material and preparation method thereof |
| CN110273067A (en) * | 2019-07-25 | 2019-09-24 | 武汉钢铁有限公司 | A method of sintering utilizes dedusting ash |
| CN110468274A (en) * | 2019-09-26 | 2019-11-19 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Electric furnace ash prepares cold-consolidated ball Processes and apparatus |
| CN110669921B (en) * | 2019-10-18 | 2023-10-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | System and method for recycling steelmaking secondary dust removal ash |
| CN110669921A (en) * | 2019-10-18 | 2020-01-10 | 甘肃酒钢集团宏兴钢铁股份有限公司 | System and method for resourcefully treating steelmaking secondary dedusting ash |
| CN110747345A (en) * | 2019-11-05 | 2020-02-04 | 邯郸钢铁集团有限责任公司 | Converter fly ash pressed brick and preparation and utilization methods thereof |
| CN110724814A (en) * | 2019-11-25 | 2020-01-24 | 洛阳凯正环保工艺设备有限公司 | Preparation process of high-calcium iron-containing dedusting ash cold-bonded pellets |
| CN111961868A (en) * | 2020-08-07 | 2020-11-20 | 阳春新钢铁有限责任公司 | Digestion preparation method of converter waste sludge |
| CN112410499A (en) * | 2020-10-09 | 2021-02-26 | 广东华欣环保科技有限公司 | Digestion device and digestion method for free calcium oxide in converter fly ash |
| CN113846211A (en) * | 2021-10-27 | 2021-12-28 | 重庆臻焱节能环保科技有限公司 | Cold-pressed ball production process based on fly ash |
| CN114736004A (en) * | 2022-03-29 | 2022-07-12 | 何猛 | Wet briquetting production process and production line of light-burned magnesium, calcium-synthesized magnesium and aluminum-magnesium |
| CN115652081A (en) * | 2022-11-07 | 2023-01-31 | 湖南信港实业有限公司 | Dry powder material granulation process of rotary hearth furnace for treating iron-containing zinc-containing metallurgical dust and sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102367499B (en) | 2013-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102367499B (en) | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting | |
| CN104109755B (en) | A kind of dedusting ash is colded pressing metal pelletizing production system and method | |
| CN101613800B (en) | Metallurgical composite pelletizing prepared through twice pelletizing method, as well as preparation method and application thereof | |
| CN104291714B (en) | The production method of vertical mill grinding iron and steel ground-slag, slag powders and steel-making slag powder | |
| CN102978305B (en) | Molten steel casting residue treatment and recycling method | |
| CN110683774B (en) | Cementing material taking slag-steel slag-gypsum as raw material and preparation method thereof | |
| CN101624637A (en) | System and method for centralized classification treatment of steel metallurgic dust mud | |
| CN102061345A (en) | Comprehensive treatment method for recycling ferrous metallurgical slag | |
| WO2011029269A1 (en) | Method for innocuously treating chromium residue using metallurgical roasting and blast furnace | |
| CN102417939A (en) | Method for preparing high-activity powder by using dry blast furnace slag | |
| CN204022910U (en) | A kind of dedusting ash is colded pressing metal pelletizing production system | |
| AU2022200483B1 (en) | Method for recovering valuable metal from high-zinc and high-lead smelting slag | |
| CN203874873U (en) | Nickel slag grinding system | |
| CN109913642B (en) | Rotary hearth furnace raw material treatment system and process thereof | |
| CN106587840A (en) | Method for preparing converter steel slag non-fired haydite | |
| CN111961868A (en) | Digestion preparation method of converter waste sludge | |
| CN106116195A (en) | A kind of vertical mill grinding slag, lithium slag add modifying agent composite powder production method | |
| CN210596200U (en) | Processing apparatus of high-efficient zinc that removes in follow iron and steel enterprise's zinciferous fly ash | |
| CN105217975A (en) | The production method of a kind of vertical mill grinding ferronickel slag, slag composite powder | |
| CN105803186B (en) | Converter dust recovery process | |
| CN102719665B (en) | Process method for producing slag-forming agent for making steel by utilizing steel making sludge | |
| CN101638703A (en) | Method for directly reducing nickel containing pig iron by lateritic nickel in tunnel kiln | |
| CN110564957A (en) | Treatment device and method for efficiently removing zinc from zinc-containing dedusting ash of iron and steel enterprises | |
| CN110747345A (en) | Converter fly ash pressed brick and preparation and utilization methods thereof | |
| CN104593530A (en) | High-temperature tempering and curing method of liquid slag and equipment system of method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |