CN106000597A - Lean magnetite single magnetic separation-magnetic vibration machine separation process - Google Patents
Lean magnetite single magnetic separation-magnetic vibration machine separation process Download PDFInfo
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- CN106000597A CN106000597A CN201610359210.9A CN201610359210A CN106000597A CN 106000597 A CN106000597 A CN 106000597A CN 201610359210 A CN201610359210 A CN 201610359210A CN 106000597 A CN106000597 A CN 106000597A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention relates to a lean magnetite single magnetic separation-magnetic vibration machine separation process. The process comprises the steps that after being subjected to separation of stage grinding, a first stage magnetic separator, a first stage dewatering tank and a second stage magnetic separator, 12-0 mm lean magnetite is fed in first stage fine sieve operation, and after concentrated by a dewatering permanent magnet machine, oversize products of the first stage fine sieve operation are fed in third stage ball grinder for regrinding. The process is characterized by further comprising the following steps that after regrinding by the third stage ball grinder, the content of the products with the particle size reaching -200 meshes is 90%, the products are fed into a three stage magnetic separator and a magnetic vibration machine for separation, the grade of final concentrate is 67.3%-67.8%, and the grade of final tailings is 11%-11.5%. According to the lean magnetite single magnetic separation-magnetic vibration machine separation process, second stage dewatering tank operation and second stage fine sieve operation are reduced, returning of middlings is avoided, regrinding quantity is reduced by 50%, thus the number of regrinding machines can be reduced by half, and the purposes of energy saving, consumption reducing, cost reducing and benefit increasing are achieved.
Description
Technical field
The invention belongs to iron ore beneficiation technical field, particularly a kind of chromium depleted zone single magnetic separation magnetic shakes machine sorting process.
Background technology
nullChromium depleted zone generally uses " stage grinding、Single magnetic separation、Spun yarn evenness " method sort，Technological process is: chromium depleted zone stone (12～0mm) is through one section of closed circuit grinding，Scalping overflow granularity reaches granularity-200 mesh content 55～60%，Sort through a stages of magnetic separation，Jettisoning part coarse grain qualified tailings，One time magnetic separation rough concentrate grinds closed circuit grinding through two-stage nitration，Secondary grading overflow granularity reaches-200 mesh content 85%～90%，It is dehydrated groove through one section、After two stage magnetic separator sort，Two stage magnetic separator concentrate feed one section of dusting cover operation，Oversize feeds three sections of ball mill after dehydration permanent magnetic motor concentrates and regrinds，After regrinding, product granularity reaches 85%～90%，Feed two-stage nitration dehydration groove again、Three stage magnetic separator sort，Three stage magnetic separator concentrate feed two-stage nitration dusting cover operation，Two-stage nitration dusting cover oversize returns three sections of ball mill and regrinds，It is combined into final concentrate under one section of dusting cover sieve and under two-stage nitration dusting cover sieve，One stages of magnetic separation mine tailing、One section of dehydration groove mine tailing、Two-stage nitration magnetic tailing、Dehydration permanent magnetic motor mine tailing、Two-stage nitration dehydration groove mine tailing、Three stages of magnetic separation mine tailings are combined into true tailings.In above-mentioned selecting process, one section, two-stage nitration dusting cover operation play the pivotal role of upgrading, but owing to one section of dusting cover and two-stage nitration dusting cover oversize need to be after grinding machine be regrinded again, could sort further, flow process forms the productivity in certain middling recurrence amount, and one section of sieve and on two-stage nitration sieve close, all account for the 22%-25% of gross production rate, it is exactly that two-stage nitration oversize returns grinding machine again, makes the amount of regrinding add one times.If regrinded, granularity does not reaches requirement, causes middling cycle amount to be gradually increased, and forms vicious cycle, affects sorting index, simultaneously complex process, and power consumption is big, and cost is high.As shown in Figure 1.
Summary of the invention
It is simple that mesh of the present invention is to provide a kind of ore-dressing technique, and sorting result is good, and the chromium depleted zone single magnetic separation magnetic of low cost shakes machine sorting process.
It is an object of the invention to be realized by following technical proposals:
A kind of chromium depleted zone single magnetic separation magnetic of the present invention shakes machine sorting process, chromium depleted zone including 12～0mm is through one section of closed circuit grinding, scalping overflow granularity reaches granularity-200 mesh content 55～60%, after one section of magnetomechanical sorts, one stage magnetic separator rough concentrate grinds closed circuit grinding through two-stage nitration, secondary grading overflow granularity reaches-200 mesh content 85%～90%, feed one section of dehydration groove, after two stage magnetic separator sort, two stage magnetic separator concentrate feed one section of dusting cover operation, the oversize of one section of dusting cover operation feeds three sections of ball mill after dehydration permanent magnetic motor concentrates and regrinds, characterized by further comprising the following step:
After three sections of ball mill are regrinded, product granularity reaches-200 mesh content 90% and feeds three stage magnetic separator and sort, and the concentrate of three stage magnetic separator feeds the magnetic machine that shakes and sorts, it is thus achieved that magnetic shake the concentrate of machine and the undersize of one section of dusting cover is combined into final concentrate, grade is 67.3%-67.8%；One stages of magnetic separation mine tailing, one section of dehydration groove mine tailing, two-stage nitration magnetic tailing, dehydration permanent magnetic motor mine tailing, three stages of magnetic separation mine tailings and the magnetic tail ore deposit that shakes is combined into true tailings, grade 11%-11.5%.
The described magnetic machine that shakes uses the efficient magnetic of KSZK V-type 1000mm to shake ore separators.
The invention have the advantage that
The chromium depleted zone single magnetic separation magnetic of the present invention shakes machine sorting process, mainly making employing magnetic shake efficient ore separators, replace two-stage nitration dehydration groove and two-stage nitration dusting cover operation, the magnetic concentrate after regrinding is sorted by the magnetic machine that shakes, qualified grade concentrate and qualified grade mine tailing can be obtained, there is no middling recurrence, decrease the amount of regrinding of 50%, while reducing two-stage nitration dehydration groove, two-stage nitration dusting cover operation, board number minimizing half of regrinding can be made, simple flow, reduces beneficiation cost, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the method selecting process figure of " stage grinding, single magnetic separation, spun yarn evenness ".
Fig. 2 is that one chromium depleted zone of the present invention single magnetic separation magnetic shakes machine selecting process figure.
Detailed description of the invention
Further illustrate the detailed description of the invention of the present invention below in conjunction with the accompanying drawings.
As Fig. 2 shows, a kind of chromium depleted zone single magnetic separation magnetic of the present invention shakes machine sorting process, and the chromium depleted zone including 12～0mm is through one section of closed circuit grinding, and scalping overflow granularity reaches granularity-200 mesh content 55～60%, after one section of magnetomechanical sorts,One stage magnetic separator rough concentrate grade 48% ～51%, productivity 45% ～47%, a stages of magnetic separation tailings grade 8%～9.5%, One stage magnetic separator is coarse-fineGrinding closed circuit grinding through two-stage nitration, secondary grading overflow granularity reaches-200 mesh content 85%～90%, feeds one section of dehydration flowing current separation other,Dehydration groove concentrate grade 52% ～43%, tailings grade 10%～11%, Dehydration groove concentrate feedsTwo stage magnetic separator sort, two stage magnetic separator concentrate grades57% ～59%,Two stage magnetic separator essences feed one section of dusting cover operation, one section of dusting cover operationGrade 54% on sieve ～55%, OversizeAfter dehydration permanent magnetic motor concentrates, feed three sections of ball mill regrind, it is characterised in that also comprise the following steps:
After three sections of ball mill are regrinded, product granularity reaches-200 meshContent90% feeds three stage magnetic separator sorts, three stage magnetic separatorConcentrate grade 61% ～63%,FeedMagnetic shakes machineSort, it is thus achieved thatMagnetic shakes machineConcentrate grade67.8% ～68.2%, Magnetic shakes machineThe undersize of concentrate and one section of dusting cover is combined into final concentrate, and grade is67.3%-67.8%；One stages of magnetic separation mine tailing, one section of dehydration groove mine tailing, two-stage nitration magnetic tailing, dehydration permanent magnetic motor mine tailing, three stages of magnetic separation mine tailings and the magnetic ore separators mine tailing that shakes is combined into true tailings, grade 11%-11.5%.
The magnetic of the present invention machine that shakes uses the efficient magnetic of KSZK V-type 1000mm to shake ore separators.This efficient magnetic ore separators that shakes directly is abandoned operation mine tailing as true tailings;And then give up other magnetic plant mine tailing Regrinding as chats, and decreasing two-stage nitration dehydration groove and two-stage nitration dusting cover operation, there is no middling recurrence, the amount of regrinding reduces 50%, and the board number that can make to regrind reduces half, reaches to save energy and reduce the cost, the purpose of cost efficiency；Can improve and select factory's disposal ability about 10%, energy-saving and cost-reducing notable, there is considerable economic benefit.
Claims (2)
- null1. a chromium depleted zone single magnetic separation magnetic shakes machine sorting process，Chromium depleted zone including 12～0mm is through one section of closed circuit grinding，Scalping overflow granularity reaches granularity-200 mesh content 55～60%，After one section of magnetomechanical sorts，One stage magnetic separator rough concentrate grade 48%～51%，Productivity 45%～47%，One stages of magnetic separation tailings grade 8%～9.5%，One stage magnetic separator is coarse-fine grinds closed circuit grinding through two-stage nitration，Secondary grading overflow granularity reaches-200 mesh content 85%～90%，Feed one section of dehydration flowing current separation other，Dehydration groove concentrate grade 52%～43%，Tailings grade 10%～11%，Dehydration groove concentrate feeds two stage magnetic separator and sorts，Two stage magnetic separator concentrate grades 57%～59%，Two stage magnetic separator essences feed one section of dusting cover operation，Grade 54%～55% on the sieve of one section of dusting cover operation，Oversize feeds three sections of ball mill after dehydration permanent magnetic motor concentrates and regrinds，Characterized by further comprising the following step:After three sections of ball mill are regrinded, product granularity reaches-200 mesh content 90% and feeds three stage magnetic separator and sort, the concentrate grade 61%～63% of three stage magnetic separator, feed the magnetic machine that shakes to sort, the magnetic obtained shakes machine concentrate grade 67.8%～68.2%, the shake undersize of machine concentrate and one section of dusting cover of magnetic is combined into final concentrate, and grade is 67.3%-67.8%；One stages of magnetic separation mine tailing, one section of dehydration groove mine tailing, two-stage nitration magnetic tailing, dehydration permanent magnetic motor mine tailing, three stages of magnetic separation mine tailings and the magnetic ore separators mine tailing that shakes is combined into true tailings, grade 11%-11.5%.
- Chromium depleted zone the most according to claim 1 single magnetic separation magnetic shakes machine sorting process, it is characterised in that the described magnetic machine that shakes uses the efficient magnetic of KSZK V-type 1000mm to shake ore separators.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610359210.9A CN106000597B (en) | 2016-05-27 | 2016-05-27 | Single magnetic separation-the magnetic of chromium depleted zone shakes machine sorting process |
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| CN201610359210.9A CN106000597B (en) | 2016-05-27 | 2016-05-27 | Single magnetic separation-the magnetic of chromium depleted zone shakes machine sorting process |
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| CN106000597A true CN106000597A (en) | 2016-10-12 |
| CN106000597B CN106000597B (en) | 2017-12-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350157A (en) * | 2017-07-27 | 2017-11-17 | 中钢集团马鞍山矿山研究院有限公司 | A kind of stage grinding of microfine low-grade magnetite, stage grading new method |
| CN109351466A (en) * | 2018-09-20 | 2019-02-19 | 鞍钢集团矿业有限公司 | A kind of beneficiation new process handling magnetic iron ore |
| CN113908619A (en) * | 2021-09-24 | 2022-01-11 | 清远市博发环保科技有限公司 | Production method and device for preparing liquid environment-friendly alkali from carbide slag |
| CN114130531A (en) * | 2021-12-09 | 2022-03-04 | 太原钢铁(集团)有限公司 | Method for improving utilization coefficient of primary ball mill in grinding and selecting process |
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| CN102228860A (en) * | 2010-04-28 | 2011-11-02 | 鞍钢集团矿业公司 | Novel magnetite beneficiation process |
| CN102527512A (en) * | 2012-01-19 | 2012-07-04 | 河北联合大学 | Intelligent efficient classificator |
| CN102698871A (en) * | 2012-06-17 | 2012-10-03 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN102773155A (en) * | 2012-08-17 | 2012-11-14 | 中冶长天国际工程有限责任公司 | Fine grinding process for micro fine grain ore |
| CN105233976A (en) * | 2015-11-05 | 2016-01-13 | 鞍钢集团矿业公司 | Tailing recovery process adopting preconcentration-roasting-regrinding and magnetic separation method |
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2016
- 2016-05-27 CN CN201610359210.9A patent/CN106000597B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102228860A (en) * | 2010-04-28 | 2011-11-02 | 鞍钢集团矿业公司 | Novel magnetite beneficiation process |
| CN102527512A (en) * | 2012-01-19 | 2012-07-04 | 河北联合大学 | Intelligent efficient classificator |
| CN102698871A (en) * | 2012-06-17 | 2012-10-03 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN102773155A (en) * | 2012-08-17 | 2012-11-14 | 中冶长天国际工程有限责任公司 | Fine grinding process for micro fine grain ore |
| CN105233976A (en) * | 2015-11-05 | 2016-01-13 | 鞍钢集团矿业公司 | Tailing recovery process adopting preconcentration-roasting-regrinding and magnetic separation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350157A (en) * | 2017-07-27 | 2017-11-17 | 中钢集团马鞍山矿山研究院有限公司 | A kind of stage grinding of microfine low-grade magnetite, stage grading new method |
| CN107350157B (en) * | 2017-07-27 | 2019-08-06 | 中钢集团马鞍山矿山研究院有限公司 | A kind of stage grinding of microfine low-grade magnetite, stage grading new method |
| CN109351466A (en) * | 2018-09-20 | 2019-02-19 | 鞍钢集团矿业有限公司 | A kind of beneficiation new process handling magnetic iron ore |
| CN113908619A (en) * | 2021-09-24 | 2022-01-11 | 清远市博发环保科技有限公司 | Production method and device for preparing liquid environment-friendly alkali from carbide slag |
| CN114130531A (en) * | 2021-12-09 | 2022-03-04 | 太原钢铁(集团)有限公司 | Method for improving utilization coefficient of primary ball mill in grinding and selecting process |
| CN114130531B (en) * | 2021-12-09 | 2024-01-30 | 太原钢铁(集团)有限公司 | Method for improving utilization coefficient of primary ball mill of grinding and selecting process |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Applicant after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Applicant before: Anshan Iron & Steel Group Mining Co., Ltd. |
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