CN101249498B - Cold steel scoria processing method - Google Patents
Cold steel scoria processing method Download PDFInfo
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- CN101249498B CN101249498B CN2008100232588A CN200810023258A CN101249498B CN 101249498 B CN101249498 B CN 101249498B CN 2008100232588 A CN2008100232588 A CN 2008100232588A CN 200810023258 A CN200810023258 A CN 200810023258A CN 101249498 B CN101249498 B CN 101249498B
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Abstract
The invention discloses a cold steel slag processing method, which comprises the following steps of: pouring processed solidified and moistened cold steel slag into an inclinable grizzly for screening, magnetically separating iron contained in the lower layer by a head wheel permanent-magnet drum, and carrying out secondary screening by a first vibrating screen; delaminating and removing iron of larger slag blocks after screening by a belt-type iron remover and a permanent-magnet drum, crushing by a hydraulic protection crusher, screening by a second vibrating screen, returning larger slag blocks and crushing to form a one-step closed-loop circle; screening small slag blocks screened by the first vibrating screen and the second vibrating screen by a third vibrating screen; and screening the small ones by a fourth vibrating screen, and circularly crushing the large ones to form a secondary closed-loop circle, wherein the slag blocks screened by the third and the fourth vibrating screens are the final slag powder, and all of the magnetically-selected metal materials are transported to small iron material fields, bean steel material fields or roe steel material fields. By adopting double closed-loop circle process, the cold steel slag processing method has high efficiency, low labor intensity and less dust in process and can completely achieve zero discharge.
Description
Technical field
The present invention relates to a kind of slag treatment process, specifically a kind of hot melt slag cold steel scoria processing method after treatment.
Background technology
Along with the development of steel and iron industry, the slag amount is also along with increase.At present, the slag treatment process has many, and the hot melt slag excavates entrucking with equipment such as loading machine, power shovels after treatment, is transported to the waste field again.Storing up of slag not only takies a large amount of arable lands, contaminated environment, and recyclable 7%～15% steel in the slag.The slag that needs processing and utilization then is transported to PROCESS FOR TREATMENT such as slag is pulverized between handling, screening, magnetic separation.
Slag can be made smelting flux, slag cement, building aggregate, agricultural fertilizer and soil conditioner etc. after processing.Therefore, the processing of slag and comprehensive utilization can produce huge economic and social benefit.
The flow chart of cold steel scoria processing method is seen Fig. 1 in the prior art, and the moistening cold slag of the curing of handling is directly poured diagrid into and sieved, and dropping hammer through screening greater than the clinker of 200mm loops back diagrid after handling; Clinker less than 200mm falls within on the conveyer, removes surperficial iron content through the belt tramp iron separator, enters rotary screen and screens; Enter disintegrating machine greater than the clinker of 50mm and carry out fragmentation, directly see off to stack less than the clinker of 20mm and bury; The vibratory sieve of delivering to of 20mm～50mm screens, and sees off to stack less than the clinker of 20mm and buries.
Former cold slag treatment process is mainly the extraction metal charge, and clinker wherein can't be handled, and can only stack and bury, and does not only reach environmental requirement, and has caused waste; And metal charge can not separate fully in the clinker, and through the unified transportation screening of conveyer belt, big small powder does not mix and need manually deliver to the stock ground metal charge that magneticly elects, and automaticity is low, also is unfavorable for the utilization of later process to clinker.
Summary of the invention
In order to overcome the problem that existing cold steel scoria processing method exists, the purpose of this invention is to provide a kind of cold steel scoria processing method, this processing method efficient height, can realize zero-emission; And the workman to operate labour intensity low, the dust that produces in processing procedure is less, the final steel-making slag powder granularity of handling reaches 0～10mm, iron-holder is not more than 1%, satisfies the utilization of later process to clinker fully.
The objective of the invention is to be achieved through the following technical solutions:
A kind of cold steel scoria processing method is characterized in that it may further comprise the steps:
(1) but the moistening cold slag of the curing that will handle directly pour the tilting-type diagrid into and sieve, dropping hammer through screening greater than the clinker of 200mm loops back diagrid after handling;
(2) clinker less than 200mm falls within on the conveyer, and the iron content through the belt tramp iron separator is removed surface 260～300mm after the great wheel permanent magnetic pulley magneticly elects lower floor's iron content, enters the 1# vibratory sieve and carries out postsearch screening again;
(3) screening falls within on the conveyer greater than the clinker of 40mm, enter after belt tramp iron separator and permanent magnetic pulley layering deironing that hydraulic protecting Hubei Province is broken carries out fragmentation, fall into after the fragmentation and deliver to the screening of 2# vibratory sieve on the conveyer, greater than returning of 40mm, enter after belt tramp iron separator and permanent magnetic pulley layering deironing that hydraulic protecting Hubei Province is broken carries out fragmentation, form once closed circuit follow bad;
(4) clinker less than 40mm that filters out of 1# vibratory sieve and 2# vibratory sieve falls within and enters the 3# vibratory sieve on the conveyer after belt tramp iron separator and permanent magnetic pulley layering deironing and sieve;
(5) clinker of 10～40mm falls within on the conveyer and falls within on the conveyer after impact breaker carries out fragmentation through entering after belt tramp iron separator and the permanent magnetic pulley layering deironing in the step (4), delivering to the 4# vibratory sieve sieves, then will be wherein greater than 10mm to enter the impact breaker circulation after belt tramp iron separator and permanent magnetic pulley layering deironing broken, form the secondary closed cycle;
(6) 3# vibratory sieve and 4# bolting come out less than 10mm be the finished steel ground-slag, its iron-holder is less than 1%;
(7) metal charge that comes out of all magnetic separation is delivered on the unified conveyer, through 5# bolting, wherein 20-200mm falls within conveyer and delivers to little iron charge field, the metal charge of 0～20mm falls within conveyer and delivers to 6# bolting, wherein the conveyer that falls within of 8～20mm is delivered to beans steel stock ground, and the conveyer that falls within of 0 remaining～8mm is delivered to roe steel stock ground.
In the step of the present invention (1), hydraulic push rod is installed on the diagrid feed bin controls bin gate automatically, be used for controlling the material falling speed, make it even blanking.
The present invention adopts central controller able to programme, replaces original relay control, and whole production line is operated in the control room, need not workman's field operation, in case equipment breaks down, in time finds in the control room immediately, in time fixes a breakdown.Wherein two closed circuit binary cycle systems can automatically switch, and need not manual operation, the unmanned operation of on-the-spot realization.Realize cutting payroll to improve efficiency, and improved labor strength and working environment.
The present invention adopts two closed circuit double-cycle process, and the efficient height, that the workman operates labour intensity is low, and the dust that produces in processing procedure is less, and the final steel-making slag powder granularity of handling reaches 0～10mm, and iron-holder is not more than 1%, realizes zero-emission fully.
Description of drawings
Fig. 1 is the flow chart of cold steel scoria processing method in the prior art;
Fig. 2 is the flow chart of cold steel scoria processing method of the present invention.
The specific embodiment
At big converter field by using hot application curing process slag, the slag water content is higher, is about 8-10%.The back transhipment adopts the present invention to carry out after-treatment.A kind of hot application of the present invention solidifies process for treating steel slag, may further comprise the steps:
1, but the moistening cold slag of curing handled of hot application is directly poured the tilting-type diagrid into the self-tipping type automobile and is sieved, and dropping hammer through screening greater than the clinker of 200mm loops back diagrid after handling.Hydraulic push rod is installed on the diagrid feed bin is controlled bin gate automatically,, make it even blanking with control material falling speed.
2, the clinker less than 200mm falls within on the conveyer, and the iron content through the belt tramp iron separator is removed surface 260～300mm after the great wheel permanent magnetic pulley magneticly elects lower floor's iron content, enters the postsearch screening of 1# vibratory sieve again.
3, screening falls within on the conveyer greater than the clinker of 40m; enter after belt tramp iron separator and permanent magnetic pulley layering deironing that hydraulic protecting Hubei Province is broken carries out fragmentation; fall into after the fragmentation and deliver to the screening of 2# vibratory sieve on the conveyer; greater than returning of 40mm; enter after belt tramp iron separator and permanent magnetic pulley layering deironing that hydraulic protecting Hubei Province is broken carries out fragmentation, form once closed circuit follow bad.
4, the clinker less than 40mm that filters out of 1# vibratory sieve and 2# vibratory sieve falls within on the conveyer and enter 3# bolting after belt tramp iron separator and permanent magnetic pulley layering deironing.
5, after 3# bolting, wherein the clinker of 10～40mm falls within on the conveyer and delivers to 4# bolting on the conveyer through entering after belt tramp iron separator and the permanent magnetic pulley layering deironing to fall within after impact breaker carries out fragmentation, and wherein the impact breaker that enters after belt tramp iron separator and permanent magnetic pulley layering deironing greater than 10mm circulates broken.Form the secondary closed cycle.
6,3# vibratory sieve and 4# bolting come out less than 10mm be the finished steel ground-slag, deliver to through the swaying type conveyer and stack the place, its iron-holder is less than 1%.
7, the metal charge that comes out of all magnetic separation is delivered on the unified conveyer, through 5# bolting, wherein 20-200mm falls within conveyer and delivers to little iron charge field, the metal charge of 0～20mm falls within conveyer and delivers to 6# bolting, wherein the conveyer that falls within of 8～20mm is delivered to beans steel stock ground, and the conveyer that falls within of 0 remaining～8mm is delivered to roe steel stock ground.
The dust that processing procedure of the present invention produces is less, and the final steel-making slag powder granularity of handling reaches 0～10mm, and iron-holder is not more than 1%, realizes zero-emission fully.
Claims (2)
1. cold steel scoria processing method is characterized in that it may further comprise the steps:
(1) but the moistening cold slag of the curing that will handle directly pour the tilting-type diagrid into and sieve, dropping hammer through screening greater than the clinker of 200mm loops back diagrid after handling;
(2) clinker less than 200mm falls within on the conveyer, and the iron content through the belt tramp iron separator is removed surface 260～300mm after the great wheel permanent magnetic pulley magneticly elects lower floor's iron content, enters the 1# vibratory sieve and carries out postsearch screening again;
(3) screening falls within on the conveyer greater than the clinker of 40mm, enter after belt tramp iron separator and permanent magnetic pulley layering deironing that hydraulic protecting Hubei Province is broken carries out fragmentation, fall into after the fragmentation and deliver to the screening of 2# vibratory sieve on the conveyer, greater than returning of 40mm, enter after belt tramp iron separator and permanent magnetic pulley layering deironing that hydraulic protecting Hubei Province is broken carries out fragmentation, form once closed circuit follow bad;
(4) clinker less than 40mm that filters out of 1# vibratory sieve and 2# vibratory sieve falls within and enters the 3# vibratory sieve on the conveyer after belt tramp iron separator and permanent magnetic pulley layering deironing and sieve;
(5) clinker of 10～40mm falls within on the conveyer and falls within on the conveyer after impact breaker carries out fragmentation through entering after belt tramp iron separator and the permanent magnetic pulley layering deironing in the step (4), delivering to the 4# vibratory sieve sieves, then will be wherein greater than 10mm to enter the impact breaker circulation after belt tramp iron separator and permanent magnetic pulley layering deironing broken, form the secondary closed cycle;
(6) 3# vibratory sieve and 4# bolting come out less than 10mm be the finished steel ground-slag, its iron-holder is less than 1%;
(7) metal charge that comes out of all magnetic separation is delivered on the unified conveyer, through 5# bolting, wherein 20-200mm falls within conveyer and delivers to little iron charge field, the metal charge of 0～20mm falls within conveyer and delivers to 6# bolting, wherein the conveyer that falls within of 8～20mm is delivered to beans steel stock ground, and the conveyer that falls within of 0 remaining～8mm is delivered to roe steel stock ground.
2. cold steel scoria processing method according to claim 1 is characterized in that: in the step (1), control material falling speed is installed on the diagrid feed bin, the hydraulic push rod that makes it even blanking is controlled bin gate automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100232588A CN101249498B (en) | 2008-04-03 | 2008-04-03 | Cold steel scoria processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100232588A CN101249498B (en) | 2008-04-03 | 2008-04-03 | Cold steel scoria processing method |
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| CN101249498A CN101249498A (en) | 2008-08-27 |
| CN101249498B true CN101249498B (en) | 2010-08-04 |
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| CN2008100232588A Expired - Fee Related CN101249498B (en) | 2008-04-03 | 2008-04-03 | Cold steel scoria processing method |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927208B (en) * | 2009-06-23 | 2013-03-13 | 鞍山钢铁集团公司 | Optimized process for processing steel slag by magnetic separation |
| CN102069028A (en) * | 2010-04-22 | 2011-05-25 | 李玉庚 | New process for crushing and pre-grinding steel slag |
| CN102952938B (en) * | 2011-08-26 | 2014-07-23 | 宝山钢铁股份有限公司 | Method for processing fine ores used for blast furnace smelting by using raw ores |
| CN103014198A (en) * | 2011-09-21 | 2013-04-03 | 山西太钢不锈钢股份有限公司 | Treatment method of molten iron pretreatment slag |
| CN103084266B (en) * | 2011-10-28 | 2016-05-18 | 鞍山钢铁集团公司矿渣开发公司 | A kind of production method of smelting steel tailings miropowder and device |
| CN102806143B (en) * | 2012-08-16 | 2015-06-17 | 芜湖新兴铸管有限责任公司 | Screening and magnetic separation system for waste steel and steel slag and screening and magnetic separation method thereof |
| CN103290153B (en) * | 2013-06-05 | 2014-10-22 | 中冶建筑研究总院有限公司 | Steel slag treating technology |
| CN104258971B (en) * | 2014-08-29 | 2016-09-07 | 河南鸣海铸业有限公司 | A kind of steel cuttings automatically crushes screening all-in-one machine |
| CN104480239A (en) * | 2014-12-05 | 2015-04-01 | 本钢板材股份有限公司 | Method for treating converter slag through hot splashing |
| CN107159426A (en) * | 2017-04-27 | 2017-09-15 | 酒泉钢铁(集团)有限责任公司 | A kind of slag is secondary to select iron method |
| CN107447065A (en) * | 2017-10-11 | 2017-12-08 | 中冶节能环保有限责任公司 | A kind of cold conditions slag efficient stable processing unit and method |
| CN108187880B (en) * | 2018-01-15 | 2018-10-23 | 南京芬钢环保科技有限公司 | A kind of slag advanced treatment process |
| CN108940519A (en) * | 2018-06-11 | 2018-12-07 | 淮北卓颂建筑工程有限公司 | A kind of steel slag freezing crushing method |
| CN109092844B (en) * | 2018-06-22 | 2019-04-09 | 南京芬钢环保科技有限公司 | Steel slag multistage treatment method |
| CN110935708B (en) * | 2018-09-25 | 2023-08-22 | 王雨轩 | Waste recycling treatment system and treatment method for aluminum alloy products |
| CN115382653B (en) * | 2022-08-23 | 2024-01-02 | 中再生纽维尔资源回收设备（江苏）有限公司 | Feeding control method of scrap steel feeding machine |
| CN115739644A (en) * | 2022-11-25 | 2023-03-07 | 钢城集团凉山瑞海实业有限公司 | Blast furnace slag treatment system and treatment method thereof |
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