CN1308136A - Steel slag magnetically dressing and re-treating process and equipment - Google Patents
Steel slag magnetically dressing and re-treating process and equipment Download PDFInfo
- Publication number
- CN1308136A CN1308136A CN00123358A CN00123358A CN1308136A CN 1308136 A CN1308136 A CN 1308136A CN 00123358 A CN00123358 A CN 00123358A CN 00123358 A CN00123358 A CN 00123358A CN 1308136 A CN1308136 A CN 1308136A
- Authority
- CN
- China
- Prior art keywords
- steel
- steel slag
- slag
- ball mill
- diagrid
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 62
- 239000010959 steel Substances 0.000 title claims abstract description 62
- 239000002893 slag Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052742 iron Inorganic materials 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000012141 concentrate Substances 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000006148 magnetic separator Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract 1
- 238000011268 retreatment Methods 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 description 11
- 238000007885 magnetic separation Methods 0.000 description 9
- 239000004568 cement Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The retreatment process of magnetically separated steel slag is characterized by using steel slag whose grade is 40-60% and grain size is 0-20mm as raw material and feeding the steel slag into special-purpose equipment ball mill to make fine grinding. When the grain size of 85% steel slag of raw material reaches 200 meshes, slag is separated from iron particles to obtain the steel slag concentrate whose grade is greater than 60, tailings and granular iron material whose grade is greater than 90%. Said invention is used to make deep-processing treatment of steel slag on the basis of conventional waste steel slag treatment so as to fully utilize steel slag resource.
Description
The present invention relates to the comprehensive utilization of metallurgical industry revolving furnace steel slag, a kind of steel slag magnetically dressing and re-treating process and equipment.
At present,, only limit to both at home and abroad, and to obtain grade through magnetic separation be 40～60% steel slag magnetically dressing, as the raw material of sintered ironmaking technology its fragmentation for the processing of steel-making waste residue.This technology not only makes the using value of steel-making waste residue do not embodied fully, but also causes the waste of resource.
The objective of the invention is for the using value that improves steel-making waste residue and widen its Application Areas, alleviate the environmental pollution that steel-making waste residue causes, a kind of steel slag magnetically dressing and re-treating process and equipment are provided.
Steel slag magnetically dressing and re-treating process of the present invention and device content summary:
Steel slag magnetically dressing and re-treating process of the present invention is on the basis of existing technology, it is handled again, slag in the steel slag magnetically dressing is fully separated with iron, and obtain three kinds of products simultaneously, promptly (1) granularity is 3～20mm, the granular iron and steel stock of grade＞90%, and it can directly be used as the refrigerant of converter steelmaking, replace expensive iron and steel scrap, thus the iron and steel stock consumption when reducing steel-making and the consumption of slag making materials and oxygen; (2) ore pulp that produces in the process of handling again can pass through magnetic separation once more, obtains fine grinding steel slag magnetically dressing concentrate, grade＞60%, and the iron charge that it can be used as agglomerate or pellet uses; (3) mine tailing that obtains of magnetic separation can be as the raw material of making cement, and in addition because of calcic height in the mine tailing, the flux (replacement Wingdale) that also can be used as agglomerate uses.
Steel slag magnetically dressing and re-treating process of the present invention, it is characterized in that: with the steel slag magnetically dressing that grade is 40～60%, granularity is 0～20mm is raw material, it is sent into fine grinding in the specific equipment ball mill, when the granularity of 85% slag in the raw material reaches 200 orders, slag is fully separated with abrasive grit,, levigated ore pulp and isolated granular iron and steel stock are moved to gape by the impulse action of current, wherein ore pulp is discharged through the gap of diagrid and is entered magnetic separator, obtains the slag concentrate and the mine tailing of grade＞60%; The granular iron and steel stock of grade＞90% enters granular iron and steel stock discharging funnel by diagrid and discharges.
The specific equipment ball mill by: constitute for mineral aggregate funnel, ball mill, diagrid, water service pipe, ore pulp discharging funnel, granular iron and steel stock discharging funnel, it is characterized in that: ball mill is a horizontal ball mill, its left end is provided with one and gives mineral aggregate funnel and water service pipe, feed in the mine inlet of ball mill, its right-hand member is a diagrid, and ore pulp discharging funnel and granular iron and steel stock discharging funnel are set in the bottom of diagrid.
Steel slag magnetically dressing and re-treating process of the present invention, be on the basis that the waste steel slag of routine is handled, it to be carried out deep processing to handle, increase secondary grinding and isolate granular iron and steel stock simultaneously, make it be directly used in steel-making, having reduced the steel slag magnetically dressing that existing explained hereafter goes out must be through oversintering and ironmaking two procedures.Thereby improved the using value of steel-making waste residue greatly, reduced the consumption of energy consumption and other material.The slag concentrate that the ore pulp that ore grinding obtains obtains through magnetic separation, its grade are higher than the steel slag magnetically dressing of existing explained hereafter far away, thereby steel slag resource is fully used.The mine tailing that magnetic separation obtains can be used as raw material or the agglomerating flux of making cement and uses, and makes and makes the best use of everything, and turns waste into wealth, and has reduced environmental pollution.Steel slag magnetically dressing and re-treating process of the present invention implement remarkable economic efficiency and social benefit.
Embodiment:
Fig. 1 is a specific equipment ball mill structural representation
Steel slag magnetically dressing and re-treating process of the present invention is on the basis of conventional steel slag magnetically dressing technology, it is handled again, slag in the steel slag magnetically dressing is fully separated with iron, and obtain three kinds of products simultaneously, promptly (1) granularity is 3～20mm, the granular iron and steel stock of grade＞90%, and it can directly be used as the refrigerant of converter steelmaking, replace expensive iron and steel scrap, thus the iron and steel stock consumption when reducing steel-making and the consumption of slag making materials and oxygen; (2) ore pulp that produces in the process of handling again can pass through magnetic separation once more, obtains fine grinding steel slag magnetically dressing concentrate, grade＞60%, and the iron charge that it can be used as agglomerate or pellet uses; (3) mine tailing that obtains of magnetic separation can be as the raw material of making cement, and in addition because of calcic height in the mine tailing, the flux (replacement Wingdale) that also can be used as agglomerate uses.
Be 60% at first with grade, granularity is that the slag of handling through magnetic separation of 20mm is as raw material, give the ore deposit funnel with what it sent into the specific equipment ball mill, by carrying out fine grinding after the water service pipe feedwater, when the granularity of 85% slag in the raw material reaches 200 orders, slag is fully separated with abrasive grit, impulse action by current, levigated ore pulp and isolated granular iron and steel stock are moved to gape, wherein ore pulp separates with granular steel material through the interstitial row of the diagrid ore pulp of sening as an envoy to, send into magnetic separator again, obtain the slag concentrate and the mine tailing of grade＞60% after magnetic separation, the slag concentrate uses for sintering live ball group; Mine tailing can be used for making cement after drying, or uses as staflux; The granular iron and steel stock of grade＞90% enters granular iron and steel stock discharging funnel by diagrid and discharges, and can directly send to steel-making.
The specific equipment ball mill is seen Fig. 1, by: constitute for mineral aggregate funnel 1, water service pipe 2, ball mill 3, ore pulp discharging funnel 4, diagrid 5, granular iron and steel stock discharging funnel 6; Ball mill 3 is a horizontal ball mill, and its left end is provided with one and gives mineral aggregate funnel 1 and water service pipe 2, and giving mineral aggregate funnel 1 is a steel construction piece, feed in the mine inlet of ball mill 3, the right-hand member of ball mill 3 is diagrids 5, makes with reinforcing bar welding, and ore pulp is separated with granular iron and steel stock; Ore pulp discharging funnel 4 and granular iron and steel discharging funnel 6 are set in the bottom of diagrid 5.Ore pulp discharging funnel 4 is a steel construction piece, is used to collect ore pulp, and it is sent into magnetic separator; Granular iron and steel stock discharging funnel 6 is steel construction pieces, is configured in the end of diagrid, is used for collecting and the isolating granular iron and steel stock of ore pulp.
Claims (2)
1, a kind of steel slag magnetically dressing and re-treating process, it is characterized in that: with the steel slag magnetically dressing that grade is 40～60%, granularity is 0～20mm is raw material, it is sent into fine grinding in the specific equipment ball mill, when the granularity of 85% slag in the raw material reaches 200 orders, slag is fully separated with abrasive grit,, levigated ore pulp and isolated granular iron and steel stock are moved to gape by the impulse action of current, wherein ore pulp is discharged through the gap of diagrid and is entered magnetic separator, obtains the slag concentrate and the mine tailing of grade＞60%; The granular iron and steel stock of grade＞90% enters granular iron and steel stock discharging funnel by diagrid and discharges.
2, the specific equipment ball mill of steel slag magnetically dressing and re-treating process according to claim 1, by: constitute for mineral aggregate funnel, ball mill, diagrid, water service pipe, ore pulp discharging funnel, granular iron and steel stock discharging funnel, it is characterized in that: ball mill is a horizontal ball mill, its left end is provided with one and gives mineral aggregate funnel and water service pipe, feed in the mine inlet of ball mill, its right-hand member is a diagrid, and ore pulp discharging funnel and granular iron and steel stock discharging funnel are set in the bottom of diagrid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001233580A CN1148458C (en) | 2000-12-05 | 2000-12-05 | Steel slag magnetically dressing and re-treating process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001233580A CN1148458C (en) | 2000-12-05 | 2000-12-05 | Steel slag magnetically dressing and re-treating process and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1308136A true CN1308136A (en) | 2001-08-15 |
| CN1148458C CN1148458C (en) | 2004-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001233580A Expired - Fee Related CN1148458C (en) | 2000-12-05 | 2000-12-05 | Steel slag magnetically dressing and re-treating process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1148458C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264464B (en) * | 2007-03-15 | 2012-12-12 | 鞍山钢铁集团公司 | Purification technique of steel scoria magnetic separation product |
| CN102886296A (en) * | 2012-10-25 | 2013-01-23 | 江西稀有金属钨业控股集团有限公司 | Sundries removing device for throat of mill |
-
2000
- 2000-12-05 CN CNB001233580A patent/CN1148458C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264464B (en) * | 2007-03-15 | 2012-12-12 | 鞍山钢铁集团公司 | Purification technique of steel scoria magnetic separation product |
| CN102886296A (en) * | 2012-10-25 | 2013-01-23 | 江西稀有金属钨业控股集团有限公司 | Sundries removing device for throat of mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1148458C (en) | 2004-05-05 |
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