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 PDF

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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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CN104138885B (en
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张文钦
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张文钦
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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

A kind of production method that separates special steel electroslag
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.
CN201410263532.4A 2014-06-06 2014-06-06 A kind of production method separating special steel electroslag Active CN104138885B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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