CN101264464B - Purification technique of steel scoria magnetic separation product - Google Patents
Purification technique of steel scoria magnetic separation product Download PDFInfo
- Publication number
- CN101264464B CN101264464B CN 200710010644 CN200710010644A CN101264464B CN 101264464 B CN101264464 B CN 101264464B CN 200710010644 CN200710010644 CN 200710010644 CN 200710010644 A CN200710010644 A CN 200710010644A CN 101264464 B CN101264464 B CN 101264464B
- Authority
- CN
- China
- Prior art keywords
- magnetic separation
- iron
- product
- grade
- separation 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.)
- Active
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a purification technique of steel slag magnetic separation products, which comprises the following steps: (1) the steel slag magnetic separation product is put into a ball mill and water is added, (2) full grinding is processed, the product is discharged from the exhaust end of the ball mill naturally and divided into up-screen product and below-screen product through a cylinder screen, (3) the up-screen product is divided into block iron and tailings by magnetic pulley, the block iron is dried by dryer to make water content below 2%, (4) the product below screen is divided into overflow and sand-returning by a classifier, and the overflow grade of the classifier is controlled by the size of the spray water, which controls the sand-returning grade of the classifier, and (5) the sand-returning is conveyed into the fine powder feed chute through belt, the classifier overflow is conveyed to the thickener through a pump, and the underflow of the thickener is filtered by the filter and conveyed into the tail powder feed chute. The purification technique of steel slag magnetic separation products has the advantages of no non-magnetic and weakly magnetic material loss, full and complete recovery, raising the content of iron of luppen from 60% to 65% to above 90%, raising the grade of the magnetic separation powder from 40% to 50% to above 60%, raising the content of iron of steel slag product completely, and raising the comprehensive utilization ratio of the steel slag.
Description
Technical field
The present invention relates to a kind of slag treatment process, is a kind of technology that steel scoria magnetic separation product (granulated iron and magnetic separation) is carried out deep processing.
Background technology
Slag is the waste residue of getting rid of in the steelmaking process.Slag is mainly derived from the oxide that forms after the contained element oxidation in molten iron and the steel scrap, the impurity that metal charge is brought into, the slag former of adding such as lime stone, fluorite, silica and oxidant, desulfurization product and furnace lining material of being etched etc.According to the difference of the used type of furnace of steel-making, slag is divided into converter slag, open hearth slag and electric furnace slag.At present, domestic slag process technology is single, generally adopts broken---and magnetic separation sorts, and is used for handling the slag that converter produces like existing 2,400,000 tons of/year magnetic separation processing lines of Anshan iron and steel plant.This production line adopts two sections magnetic pulleys of two sections fragmentations to sort, and the concentrate product after sorting utilizes again again, and the product from failing that sorts (steel scoria magnetic separation product) is granulated iron and magnetic separation.Production line year about 100,000 tons in output granulated iron, the iron-holder of granulated iron is 60%～65%, because of its basicity fluctuation is big, there is certain difficulty in the recycling of loopback blast furnace; Production line year about 40,000 tons of output magnetic separations, magnetic separation grade 40%～50%, the raw material that can not directly produce as blast furnace can only be done agglomerates of sintered pellets and add raw material, return sintering and reuse, but recovery utilization rate is lower.Therefore, need further handle the steel slag utilization rate that improves to steel scoria magnetic separation product.A kind of steel slag magnetically dressing and re-treating process is disclosed although number of patent application is 00123358.0 patent of invention; But because the dressing method of this technology has only adopted magnetic separation; Ferrous material to non magnetic or weak magnetic can not in time sort out, causes a certain amount of metal loss.
Summary of the invention
The object of the present invention is to provide a kind of steel scoria magnetic separation product (granulated iron and magnetic separation) purifying technique, avoid the material loss of non magnetic or weak magnetic, make material reclaim more fully, more thorough, improve the steel slag utilization rate.
The objective of the invention is to realize like this; A kind of purification technique of steel scoria magnetic separation product; It is characterized in that steel scoria magnetic separation product is sent into ball mill and added water, the metallic iron that fully grinds in the material of back separates with other materials, under the effect of water flows; Naturally discharge through the ball mill exhaust end, the ball mill discharge is divided into sieve through drum sieve and goes up and sieve following two products; Oversize sub-elects piece iron and tailings through magnetic pulley, and piece iron advances piece iron intermediate bin, and tailings enters the tailings storehouse, and piece iron is behind drying machine drying, and water content is kept to below 2%, gets into piece iron finished bin, and tailings turns back to former feed bin owing to contain a spot of metallic iron; Undersize sub-elects overflow and sand return through spiral classifier; Above spiral classifier, be provided with shower water; Size through the control shower water is controlled the classifier overflow grade, and then control grader sand return grade, and the grader sand return gets into smart powder powder groove through the belt transportation; Classifier overflow is through being pumped to thickener, and thickener underflow filters the back through filter and gets into tail powder powder groove.
Because the present invention adopts the method that gravity treatment is combined with magnetic separation; Avoided the material loss of non magnetic or weak magnetic; Make material reclaim more fully, more thorough, the granulated iron iron-holder is brought up to more than 90% by 60%～65%, the magnetic separation grade is brought up to more than 60% by 40%～50%.Improved the iron-holder of slag product comprehensively, effectively utilized steel slag resource, improved the Multipurpose Utilization of Steel Slag rate, reduced environmental pollution, solved the problem that takies a large amount of soils, created great economic benefit to society.
Description of drawings
Fig. 1 is technological process apparatus image contact figure.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
The present invention is a kind of to purification technique of steel scoria magnetic separation product, is that (the granulated iron iron-holder is 60%～65% to 50～0mm steel scoria magnetic separation product, and granularity is 50～0mm with granularity; The magnetic separation grade is 40%～50%, and granularity is 5～0mm) for raw material, and three kinds of products of final generation are respectively piece iron, smart powder, tail powder through sorting after.This technology both can individual processing granulated iron and magnetic separation, can also handle the mixed material of granulated iron and magnetic separation.
As shown in Figure 1, raw material is transported to by automobile sorts the workshop, give former feed bin 1 material loading before the mill slag with frontloader; Raw material is sent into ball mill 2 by sealing-tape machine before the mill slag; When sending into raw material for ball mill 2, adding water, to be made into concentration be 70%～80% material, and material fully after the grinding, makes the metallic iron in the raw material separate with other materials the ball grinding medium filling ratio is 30%～40% ball mill 2 in; Under the effect of water flows; Naturally discharge through the ball mill exhaust end, the ball mill discharge is that the drum sieve 3 of 1.5mm is divided into two products, i.e. oversize and undersize through screen size.Oversize and undersize sort through different processes.
Oversize is that 2000 oersted magnetic pulleys 5 are selected piece iron (grade is more than 90%, and water content is more than 10%) and two kinds of products of tailings through field strength, leaves in respectively in piece iron intermediate bin 4 and the tailings storehouse 6.Piece iron is after dryer 7 oven dry, and water content is kept to below 2%, meets the technological requirement of steel mill, leaves in the piece iron finished bin 8, and finished product block iron is transported to steel mill through automobile.The tailings of selecting turns back to former feed bin 1 and sorts again owing to contain a spot of metallic iron.
Undersize sub-elects overflow and two kinds of products of sand return (grade is more than 60%) through spiral classifier 9.Sand return gets into smart powder powder groove 13 through the belt transportation, and smart powder is transported to sintering plant through automobile.Classifier overflow is through being pumped to thickener 10, and thickener underflow filters the back through filter 11 and gets into tail powder powder groove 12, is transported to the tailings field through automobile.
Again turning back to technological process after the overflow water of each operation entering water treatment system is handled in the technological process recycles.
Claims (4)
1. purification technique of steel scoria magnetic separation product; It is characterized in that steel scoria magnetic separation product is sent into ball mill (2) and added water; The metallic iron that fully grinds in the material of back separates with other materials; Under the effect of water flows, to discharge naturally through the ball mill exhaust end, the ball mill discharge is divided into sieve through drum sieve (3) and goes up and sieve following two products; Oversize sub-elects piece iron and tailings through magnetic pulley (5), and piece iron advances piece iron intermediate bin (4), and tailings enters tailings storehouse (6), and piece iron is after dryer (7) oven dry, and water content is kept to below 2%, gets into piece iron finished bin (8), and tailings turns back to former feed bin (1); Undersize sub-elects overflow and sand return through spiral classifier (9); Top at spiral classifier (9) is provided with shower water; Size through the control shower water is controlled the classifier overflow grade, and then control grader sand return grade, and the grader sand return gets into smart powder powder groove (13) through the belt transportation; Classifier overflow is through being pumped to thickener (10), and thickener underflow filters the back through filter (11) and gets into tail powder powder groove (12); The concentration of material is 70%～80% in the ball mill, and the ball grinding medium filling ratio of ball mill is 30%～40%, the sieve aperture >=1.5mm of drum sieve, and the field strength of magnetic pulley is 2000～2500 oersteds.
2. purification technique of steel scoria magnetic separation product according to claim 1 is characterized in that steel scoria magnetic separation product is a granulated iron, granularity≤50mm, granulated iron iron-holder 60%～65%.
3. according to claim 1 a described purification technique of steel scoria magnetic separation product, it is characterized in that steel scoria magnetic separation product is a magnetic separation, granularity≤5mm, grade is 40%～50%.
4. according to claim 1 a described purification technique of steel scoria magnetic separation product, it is characterized in that steel scoria magnetic separation product is granulated iron and magnetic separation, the granularity≤50mm of granulated iron wherein, iron-holder 60%～65%, the granularity≤5mm of magnetic separation, grade is 40%～50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710010644 CN101264464B (en) | 2007-03-15 | 2007-03-15 | Purification technique of steel scoria magnetic separation product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710010644 CN101264464B (en) | 2007-03-15 | 2007-03-15 | Purification technique of steel scoria magnetic separation product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101264464A CN101264464A (en) | 2008-09-17 |
| CN101264464B true CN101264464B (en) | 2012-12-12 |
Family
ID=39987286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710010644 Active CN101264464B (en) | 2007-03-15 | 2007-03-15 | Purification technique of steel scoria magnetic separation product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101264464B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748222B (en) * | 2008-12-19 | 2012-02-01 | 鞍山钢铁集团公司 | Steel tail slag mud processing technology |
| CN101823150B (en) * | 2010-05-28 | 2012-06-13 | 攀枝花钢城集团有限公司 | Method for preparing reduced iron powder |
| CN103060493B (en) * | 2012-06-29 | 2014-10-29 | 南京梅山冶金发展有限公司 | Steel slag water washing ball milling manufacture processing craft |
| CN104399584A (en) * | 2014-12-13 | 2015-03-11 | 唐山市丰润区华晨机械维修部 | Dry magnetic separation technology for waste steel slags |
| CN106076506A (en) * | 2016-06-20 | 2016-11-09 | 镇江微鑫钢业有限公司 | A kind of process technique of slag deep processing |
| CN110216009B (en) * | 2019-06-18 | 2021-01-29 | 周涛 | Method for sorting steel slag |
| CN114471937B (en) * | 2022-02-23 | 2023-04-07 | 昆明学院 | Method for comprehensively recovering iron-manganese minerals from silicon-manganese alloy smelting water-quenched slag |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282635A (en) * | 2000-09-08 | 2001-02-07 | 武汉冶金渣环保工程有限责任公司 | Comprehensive utilization of steel slags |
| CN1308136A (en) * | 2000-12-05 | 2001-08-15 | 方新贵 | Steel slag magnetically dressing and re-treating process and equipment |
| CN1390795A (en) * | 2002-06-19 | 2003-01-15 | 北京高路通科技发展有限公司 | Process for treating steel slag |
| JP2003211141A (en) * | 2002-01-21 | 2003-07-29 | Kubota Corp | System for manufacturing sand |
| CN1628910A (en) * | 2003-12-15 | 2005-06-22 | 湘潭钢铁集团有限公司 | Process for ball milling and water washing of waste iron and steel slag, slag slurry treatment process, and apparatus therefor |
| JP2006272246A (en) * | 2005-03-30 | 2006-10-12 | Sumitomo Metal Ind Ltd | Method for recovering granular iron in slag |
| CN1924025A (en) * | 2005-08-31 | 2007-03-07 | 安阳钢铁集团有限责任公司 | Process for treating slag steel |
-
2007
- 2007-03-15 CN CN 200710010644 patent/CN101264464B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282635A (en) * | 2000-09-08 | 2001-02-07 | 武汉冶金渣环保工程有限责任公司 | Comprehensive utilization of steel slags |
| CN1308136A (en) * | 2000-12-05 | 2001-08-15 | 方新贵 | Steel slag magnetically dressing and re-treating process and equipment |
| JP2003211141A (en) * | 2002-01-21 | 2003-07-29 | Kubota Corp | System for manufacturing sand |
| CN1390795A (en) * | 2002-06-19 | 2003-01-15 | 北京高路通科技发展有限公司 | Process for treating steel slag |
| CN1628910A (en) * | 2003-12-15 | 2005-06-22 | 湘潭钢铁集团有限公司 | Process for ball milling and water washing of waste iron and steel slag, slag slurry treatment process, and apparatus therefor |
| JP2006272246A (en) * | 2005-03-30 | 2006-10-12 | Sumitomo Metal Ind Ltd | Method for recovering granular iron in slag |
| CN1924025A (en) * | 2005-08-31 | 2007-03-07 | 安阳钢铁集团有限责任公司 | Process for treating slag steel |
Non-Patent Citations (1)
| Title |
|---|
| 王海燕.一钢公司不锈钢炉渣处理工艺设计.《宝钢技术》.2004,(第02期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101264464A (en) | 2008-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101491789B (en) | Beneficiation process of mixed dregs using three copper smelting methods of flash smelting furnace, revolving furnace and depletion electric furnace | |
| CN101716553B (en) | Kiln slag processing technology of zinc volatilizing kiln | |
| CN101264464B (en) | Purification technique of steel scoria magnetic separation product | |
| CN101413057B (en) | Method for efficiently separating low-ore grade and complicated iron ore | |
| CN101654717B (en) | Comprehensive treatment method of blast furnace dedusting ash | |
| CN101637744A (en) | Method for recovering and utilizing kiln slag of zinc hydrometallurgy volatilizing kiln | |
| CN108239684A (en) | A kind of converter slag New Process for Treatment | |
| CN101624637A (en) | System and method for centralized classification treatment of steel metallurgic dust mud | |
| CN104004867A (en) | High-efficiency economic secondary treatment process for steel slag | |
| CN111085336B (en) | Method for recycling iron raw material and tail slag from rotary kiln slag without harm | |
| CN104084307B (en) | The wet magnetic separation technique of iron is reclaimed in a kind of iron-containing waste | |
| CN101422752A (en) | Method for reducing the level of reselection tailings | |
| CN109092844B (en) | Steel slag multistage treatment method | |
| CN101298079A (en) | Environmental protection process method of desulfurizing slag of hot metal | |
| CN108187880B (en) | A kind of slag advanced treatment process | |
| JP2009006273A (en) | Wet type magnetic separation method for separating mixture of microparticles | |
| CN112264172A (en) | Process for producing iron ore concentrate by grading, dry grinding and dry separation of low-grade magnetite | |
| CN101974694A (en) | Production method for recovering metal copper from water granulated slag of copper smelting furnaces | |
| Nomura et al. | Beneficiation plants and pelletizing plants for utilizing low grade iron ore | |
| CN106076506A (en) | A kind of process technique of slag deep processing | |
| CN107365904B (en) | A kind of iron ore shaft roasting magnetic separation flotation tailing recycling technique | |
| CN116651610A (en) | Separation and recycling beneficiation method for iron and barium sulfate in refractory tailings | |
| CN101781710A (en) | Method for recycling and utilizing kiln slag of wet-method zinc-smelting volatilizing kiln | |
| CN101491780B (en) | Desulphurizing slag powder treatment method and desulphurizing slag reutilization method | |
| CN105177197B (en) | A kind of slag iron fine-processing technique |
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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114021 Anshan Iron and steel factory, Tiexi District, Liaoning, Anshan Patentee after: ANSHAN STEEL GROUP Co.,Ltd. Patentee after: ANSTEEL GROUP MINING Co.,Ltd. Address before: 114021 Anshan Iron and steel factory, Tiexi District, Liaoning, Anshan Patentee before: Anshan Iron and Steel Group Co.,Ltd. Patentee before: Ansteel Group Mining Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230516 Address after: 114000 Anshan Iron and steel plant, Tiexi District, Anshan, Liaoning Patentee after: ANGANG GREEN RESOURCES TECHNOLOGY Co.,Ltd. Patentee after: ANSTEEL GROUP MINING Co.,Ltd. Address before: 114021 Anshan Iron and steel factory, Tiexi District, Liaoning, Anshan Patentee before: ANSHAN STEEL GROUP Co.,Ltd. Patentee before: ANSTEEL GROUP MINING Co.,Ltd. |