CN104138885A - Processing method for electric furnace slag obtained after special steel separation - Google Patents
Processing method for electric furnace slag obtained after special steel separation Download PDFInfo
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- CN104138885A CN104138885A CN201410263532.4A CN201410263532A CN104138885A CN 104138885 A CN104138885 A CN 104138885A CN 201410263532 A CN201410263532 A CN 201410263532A CN 104138885 A CN104138885 A CN 104138885A
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- steel
- water
- special steel
- slag
- raw material
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 239000002893 slag Substances 0.000 title claims abstract description 39
- 238000000926 separation method Methods 0.000 title claims abstract description 5
- 238000003672 processing method Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000011449 brick Substances 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 238000003801 milling Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 6
- 241000731961 Juncaceae Species 0.000 claims description 6
- 241001062472 Stokellia anisodon Species 0.000 claims description 6
- 239000003082 abrasive agent Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000007885 magnetic separation Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 241001504664 Crossocheilus latius Species 0.000 claims description 3
- 241000270295 Serpentes Species 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000010985 leather Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000010883 coal ash Substances 0.000 abstract description 2
- 239000003973 paint Substances 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 230000001376 precipitating Effects 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000003595 mist Substances 0.000 description 4
- 238000004091 panning Methods 0.000 description 2
- 230000001131 transforming Effects 0.000 description 2
- 241000931143 Gleditsia sinensis Species 0.000 description 1
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention relates to a processing method for electric furnace slag obtained after special steel separation. The production method comprises the following steps of (1) pulverizing and separating; (2) water milling; (3) water flushing separating; (4) magnetic sorting; (5) separating by adopting a water flushing specific gravity method; (6) sorting in a multi-combination manner; (7) precipitating; and (8) purifying. According to the production method, produced fine particle special steel with the grade being up to 93 percent is used as a waste steel raw material and directly enters a converter to be refined into quality finished product special steel; produced waste furnace slag and micro-powder are optimal raw materials for manufacturing high-quality cement; partial granular furnace slag is used for laying paint ground of industrial factories; tailing mud is concentrated and used for processing baking-free bricks and substituting coal ash to build a road, so that the problem that the environment is polluted by the tailing mud can be solved. Water is reused after being precipitated to form closed circulation, and the zero discharge is really realized.
Description
Technical field
The present invention relates to slag waste utilization after the smelting of high-speed steel special steel, especially about a kind of production method that separates slag after special steel smelting.
Background technology
Along with improving constantly of China's high-speed steel special steel production capacity, this this waste slag also continues to increase.In slag micro mist, contain valuable resource, wherein contain iron ore after decomposition, coal ash and a small amount of slag, and the oxide elements such as calcium, iron, silicon, magnesium, can be used for manufacturing cement and non-burning brick.Pile up like a mountain has become a large dust cradle for the high-speed steel special steel waste slag that steel mill produces for many years, not only occupies productive life land used, contaminated environment, and cause resource significant wastage.The patent No. of the applicant's application is: 201210083038.0, denomination of invention is: a kind of production method that separates special steel electroslag, to adopt former panning equipment to undergo technological transformation, by slag pulverize, mill grind, in conjunction with magnetic method and hydrometer method, slag waste after high-speed steel smelting is separated into smart particle steel, iron fine powder and slag micro mist, and slag 100% is used.But exist small and weak to special steel magnetic attraction in removal process, reclaim halfway problem.
Summary of the invention
For above deficiency, the object of the present invention is to provide a kind of production method that separates slag after special steel smelting, to adopt former panning equipment to undergo technological transformation, by slag pulverize, mill grind, in conjunction with magnetic method and hydrometer method, slag waste after special steel smelting is separated into smart particle steel, iron fine powder and slag micro mist, and slag 100% is used.
Technical scheme of the present invention is achieved in the following ways: a kind of production method that separates slag after special steel smelting, comprises the following steps successively:
1), broken pure sorting: after slag after special steel smelting is shattered by breaking machine, with the strong magnetic category filter of 800 Gauss, by completely not the slag of steely select that directly to enter dry mill fine ground;
2), water mill grinds and processes: A, by rolling with entering water mill storehouse containing the furnace clinker grain of the 1-5 centimetre of steel constitution of sorting out, add and grind after the abrasive material that storage capacity is 1: 4, the water yield is entered to Mo Cang with per minute 75 rotating speeds that turn, flow with the speed of 600kg/h: the mill stone roller amount with 2000kg/h is milled, wear into micro-slag, iron fine powder, grind not broken particle steel and the compound of clinker; Abrasive material described in B, grinding mill is: the steel ball that the steel ball of 120mm accounts for 50%, 100mm accounts for 20%, 80mm steel ball and accounts for 20%, 50mm steel ball and account for 10%, and all steel balls and the palm plate of milling used are all to make containing 5 high chrome special steels more than chromium;
3), water rushes sorting: the above-mentioned compound being milled into is entered the circular stainless steel drum sieve with 3-5mm aperture from grinding mill discharging opening, rinse and turn sieve with clear water, form 0.5 centimeter of above and following particulate separation;
4), strong magnetic separation: 0.5 centimeter of above particle and piece shape thing enters in coarse fodder bucket, with semi-automatic 800 Gausses' strong magnetic separation go out all raw materials with special steel composition again selected rear work smelt the primary raw material of special steel, all the other, are recycled with half steel half slag charge of the selected generation of 500 Gauss by special steel composition raw material for the production of cement and produce non-burning brick raw material and use again wherein on a small quantity without steel coarse granule slag charge;
5), water rushes hydrometer method and separates: by step 3) in compound below isolated 3-5 millimeter in difference of height flows into rocking vibration lathe, through water jetting, rocking vibration hydrometer method, sub-elects middle particle, fine grained steel ball material and does the primary raw material of refining special steel; Coarse granule waste residue does to produce cement and non-burning brick raw material uses;
6), multiple combination sorting: by step 4), step 5) in do not separate clean trickle compound, use again in the multi-functional separator of mud water pump suction, the method that water flushing hydrometer method, magnetic method combine, sub-elect the trickle foam steel fine powder of steely 50% left and right, make to smelt the raw material of special steel;
7), precipitation: the fine useless body refuse material of discharging through above-mentioned repeatedly separator sorting, be pumped in the large sedimentation basin of one-level with slime water, building the ridge with the material filling of plastic snake sack made by leather manages, clear water after following fast stream precipitation flows in secondary little Chi ditch, again in the large clear water reserviors of precipitation inflow, makes recirculated water and uses;
8), purified treatment: will shine nature and dry through isolated special steel particle, the direct sun lights of fine grained.
The present invention, production grade, up to more than 93% smart particle special steel, directly enters converter as raw scrap material, practices into the finished product special steel of high-quality; Producing waste slag and micro mist, is to manufacture the optimal raw material of high-quality cement; Part particle slag, for the laying on industrial premises paint ground; Tail mud is taked concentration, after mummification, for processing non-burning brick and replacing fly ash building highway to use, has solved tail mud problem of environmental pollution.This invention water reuses after precipitation forms closed cycle, really reaches zero-emission.
Detailed description of the invention
A production method that separates slag after special steel smelting, comprises the following steps successively:
1, broken pure sorting: after slag after high-speed steel smelting is shattered by breaking machine, with the strong magnetic category filter of 800 Gauss, by completely not the slag of steely select that directly to enter dry mill fine ground.
2, water mill grinds and processes: A, by rolling with entering water mill storehouse containing the furnace clinker grain of the 1-5 centimetre of steel constitution of sorting out, add and grind after the abrasive material that storage capacity is 1: 4, the water yield is entered to Mo Cang with per minute 75 rotating speeds that turn, flow with the speed of 600kg/h: the mill stone roller amount with 33000kg/h is milled, wear into micro-slag, iron fine powder, grind not broken particle steel and the compound of clinker; Abrasive material described in B, grinding mill is: the steel ball that the steel ball of 120mm accounts for 50%, 100mm accounts for 20%, 80mm steel ball and accounts for 20%, 50mm steel ball and account for 10%, and all steel balls and the palm plate of milling used are all to make containing 5 high chrome special steels more than chromium.
3, water rushes sorting: the above-mentioned compound being milled into is entered the circular stainless steel drum sieve with 3-5mm aperture from grinding mill discharging opening, rinse and turn sieve with clear water, form 0.5 centimeter of above and following particulate separation.
4, strong magnetic separation: 0.5 centimeter of above particle and piece shape thing enters in coarse fodder bucket, with semi-automatic 800 Gausses' strong magnetic separation go out all raw materials with special steel composition again selected rear work smelt the primary raw material of special steel, all the other, are recycled with half steel half slag charge of the selected generation of 500 Gauss by special steel composition raw material for the production of cement and produce non-burning brick raw material and use again wherein on a small quantity without steel coarse granule slag charge;
5, water rushes hydrometer method and separates: by step 3) in compound below isolated 3-5 millimeter in difference of height flows into rocking vibration lathe, through water jetting, rocking vibration hydrometer method, sub-elects middle particle, fine grained steel ball material and does the primary raw material of refining special steel; Coarse granule waste residue does to produce cement and non-burning brick raw material uses.
6, multiple combination sorting: will not separate clean trickle compound in step 4, step 5, use again in the multi-functional separator of mud water pump suction, water rinses the method that hydrometer method, magnetic method combine, and sub-elects the trickle foam steel fine powder of steely 50% left and right, makes to smelt the raw material of special steel.
7, precipitation: the fine useless body refuse material of discharging through above-mentioned repeatedly separator sorting, be pumped in the large sedimentation basin of one-level with slime water, build the ridge with the material filling of plastic snake sack made by leather and manage, the clear water after following fast stream precipitation flows in secondary little Chi ditch, again in the large clear water reserviors of precipitation inflow, makes recirculated water and uses.
8, purified treatment: will clean with Chinese honey locust liquid and oxidant through isolated special steel particle, fine grained, also directly sun lights solarization nature dries.
Claims (1)
1. a production method that separates slag after special steel smelting, comprises the following steps: it is characterized in that successively:
1), broken pure sorting: after slag after high-speed steel smelting is shattered by breaking machine, with the strong magnetic category filter of 800 Gauss, by completely not the slag of steely select that directly to enter dry mill fine ground;
2), water mill grinds and processes: A, by rolling with entering water mill storehouse containing the furnace clinker grain of the 1-5 centimetre of steel constitution of sorting out, add and grind after the abrasive material that storage capacity is 1: 4, the water yield is entered to Mo Cang with per minute 75 rotating speeds that turn, flow with the speed of 600kg/h: the mill stone roller amount with 2000kg/h is milled, wear into micro-slag, iron fine powder, grind not broken particle steel and the compound of clinker; Abrasive material described in B, grinding mill is: the steel ball that the steel ball of 120mm accounts for 50%, 100mm accounts for 20%, 80mm steel ball and accounts for 20%, 50mm steel ball and account for 10%, and all steel balls and the palm plate of milling used are all to make containing 5 high chrome special steels more than chromium;
3), water rushes sorting: the above-mentioned compound being milled into is entered the circular stainless steel drum sieve with 3-5mm aperture from grinding mill discharging opening, rinse and turn sieve with clear water, form 0.5 centimeter of above and following particulate separation;
4), strong magnetic separation: 0.5 centimeter of above particle and piece shape thing enters in coarse fodder bucket, with semi-automatic 800 Gausses' strong magnetic separation go out all raw materials with special steel composition again selected rear work smelt the primary raw material of special steel, all the other, are recycled with half steel half slag charge of the selected generation of 500 Gauss by special steel composition raw material for the production of cement and produce non-burning brick raw material and use again wherein on a small quantity without steel coarse granule slag charge;
5), water rushes hydrometer method and separates: by step 3) in compound below isolated 3-5 millimeter in difference of height flows into rocking vibration lathe, through water jetting, rocking vibration hydrometer method, sub-elects middle particle, fine grained steel ball material and does the primary raw material of refining special steel; Coarse granule waste residue does to produce cement and non-burning brick raw material uses;
6), multiple combination sorting: by step 4), step 5) in do not separate clean trickle compound, use again in the multi-functional separator of mud water pump suction, the method that water flushing hydrometer method, magnetic method combine, sub-elect the trickle foam steel fine powder of steely 50% left and right, make to smelt the raw material of special steel;
7), precipitation: the fine useless body refuse material of discharging through above-mentioned repeatedly separator sorting, be pumped in the large sedimentation basin of one-level with slime water, building the ridge with the material filling of plastic snake sack made by leather manages, clear water after following fast stream precipitation flows in secondary little Chi ditch, again in the large clear water reserviors of precipitation inflow, makes recirculated water and uses;
8), purified treatment: will shine nature and dry through isolated special steel particle, the direct sun lights of fine grained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263532.4A CN104138885B (en) | 2014-06-06 | 2014-06-06 | A kind of production method separating special steel electroslag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263532.4A CN104138885B (en) | 2014-06-06 | 2014-06-06 | A kind of production method separating special steel electroslag |
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| Publication Number | Publication Date |
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| CN104138885A true CN104138885A (en) | 2014-11-12 |
| CN104138885B CN104138885B (en) | 2017-03-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104531921A (en) * | 2014-11-25 | 2015-04-22 | 南通新正大特钢有限公司 | Production method for separating special steel smelting slag |
| CN109046737A (en) * | 2018-08-17 | 2018-12-21 | 张文钦 | A kind of smelting solid waste electric furnace slag new process |
| CN109675907A (en) * | 2018-12-26 | 2019-04-26 | 贵州博宏实业有限责任公司 | A kind of blast furnace metallurgical solid waste comprehensive management of technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179333A (en) * | 1997-12-19 | 1999-07-06 | Nkk Corp | Method and apparatus for separating water granulated slag of waste melting furnace |
| CN101229526A (en) * | 2007-12-13 | 2008-07-30 | 攀枝花环业冶金渣开发有限责任公司 | Method of using blast furnace scrap iron in slag to prepare puron materiel |
| CN102417939A (en) * | 2011-12-09 | 2012-04-18 | 韶关市柏林再生资源开发有限公司 | Method for preparing high-activity powder by using dry blast furnace slag |
| CN102605169A (en) * | 2012-03-27 | 2012-07-25 | 丹阳市嘉山水泥有限公司 | Production method for separating high-speed steel electric furnace slag |
| CN103537366A (en) * | 2013-11-12 | 2014-01-29 | 攀枝花环业冶金渣开发有限责任公司 | Method for recycling high grade iron from blast furnace dry slag |
-
2014
- 2014-06-06 CN CN201410263532.4A patent/CN104138885B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179333A (en) * | 1997-12-19 | 1999-07-06 | Nkk Corp | Method and apparatus for separating water granulated slag of waste melting furnace |
| CN101229526A (en) * | 2007-12-13 | 2008-07-30 | 攀枝花环业冶金渣开发有限责任公司 | Method of using blast furnace scrap iron in slag to prepare puron materiel |
| CN102417939A (en) * | 2011-12-09 | 2012-04-18 | 韶关市柏林再生资源开发有限公司 | Method for preparing high-activity powder by using dry blast furnace slag |
| CN102605169A (en) * | 2012-03-27 | 2012-07-25 | 丹阳市嘉山水泥有限公司 | Production method for separating high-speed steel electric furnace slag |
| CN103537366A (en) * | 2013-11-12 | 2014-01-29 | 攀枝花环业冶金渣开发有限责任公司 | Method for recycling high grade iron from blast furnace dry slag |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104531921A (en) * | 2014-11-25 | 2015-04-22 | 南通新正大特钢有限公司 | Production method for separating special steel smelting slag |
| CN109046737A (en) * | 2018-08-17 | 2018-12-21 | 张文钦 | A kind of smelting solid waste electric furnace slag new process |
| CN109675907A (en) * | 2018-12-26 | 2019-04-26 | 贵州博宏实业有限责任公司 | A kind of blast furnace metallurgical solid waste comprehensive management of technology |
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| CN104138885B (en) | 2017-03-08 |
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