CN106000597B - Single magnetic separation-the magnetic of chromium depleted zone shakes machine sorting process - Google Patents
Single magnetic separation-the magnetic of chromium depleted zone shakes machine sorting process Download PDFInfo
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- CN106000597B CN106000597B CN201610359210.9A CN201610359210A CN106000597B CN 106000597 B CN106000597 B CN 106000597B CN 201610359210 A CN201610359210 A CN 201610359210A CN 106000597 B CN106000597 B CN 106000597B
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Classifications
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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
-
- 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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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
Shaken machine sorting process the present invention relates to a kind of single magnetic separation-magnetic of chromium depleted zone, chromium depleted zone including 12~0mm is after stage grinding, one section of magnetomechanical choosing, one section of dehydration groove, two stage magnetic separators sort, feed one section of dusting cover operation, the oversize of one section of dusting cover operation feeds three sections of ball mills after dehydration permanent magnetic motor concentration and regrinded, it is characterised in that also comprises the following steps：Three sections of ball mills regrind rear product granularity and reach that 200 mesh contents 90% feed three stage magnetic separators and the magnetic machine that shakes is sorted, and final concentrate grade is 67.3% 67.8%, and true tailings grade is 11% 11.5%.The present invention reduces two sections of dehydration grooves and two sections of dusting cover operations, and without middling recurrence, the amount of regrinding reduces 50%, can make to regrind board number reduction half, reach energy-saving, cost efficiency purpose.
Description
Technical field
The invention belongs to iron ore beneficiation technical field, particularly a kind of single magnetic separation-magnetic of chromium depleted zone machine that shakes sorts work
Skill.
Background technology
The method of chromium depleted zone generally use " stage grinding, single magnetic separation, spun yarn evenness " sorts, and technological process is：It is poor
Magnetic iron ore（12~0mm）By one section of closed circuit grinding, scalping overflow granularity reaches the mesh of granularity -200 content 55~60%,
Sorted by a stages of magnetic separation, jettisoning part coarse grain qualified tailings, magnetic separation rough concentrate is by two sections of mill closed circuit grindings, secondary point
Level overflow granularity reaches -200 mesh contents 85%~90%, after one section of dehydration groove, two stage magnetic separators sort, two stage magnetic separator concentrate
One section of dusting cover operation is fed, oversize feeds three sections of ball mills after dehydration permanent magnetic motor concentration and regrinded, and regrinds rear product granularity
Reaching 85%~90%, then feed two sections of dehydration grooves, three stage magnetic separators and sort, three stage magnetic separator concentrate feed two sections of dusting cover operations,
Two sections of dusting cover oversizes return to three sections of ball mills and regrinded, and one section of dusting cover sieve is lower with being combined into final concentrate under two sections of dusting cover sieves, and one
Stages of magnetic separation mine tailing, one section of dehydration groove mine tailing, two stages of magnetic separation mine tailings, dehydration permanent magnetic motor mine tailing, two sections of dehydration groove mine tailings, three stages of magnetic separation
Mine tailing is combined into true tailings.In above-mentioned selecting process, one section, two sections of dusting cover operations play the key effect of upgrading, but by
It could need to further sort, be formed in flow certain after grinding machine is regrinded again in one section of dusting cover and two sections of dusting cover oversizes
Middling recurrence amount, and one section of sieve is upper and two sections of sieves on yields it is close, account for the 22%-25% of gross production rate, be exactly two sections and sieve
Product returns to grinding machine again, the amount of regrinding is added one times.If regrinding granularity does not reach requirement, middling cycle amount is caused gradually to increase
Greatly, vicious circle is formed, influences sorting index, while complex process, power consumption is big, and cost is high.As shown in Figure 1.
The content of the invention
Mesh of the present invention is to provide that a kind of ore-dressing technique is simple, and sorting result is good, and the single magnetic separation of the low chromium depleted zone of cost-
Magnetic shakes machine sorting process.
The purpose of the present invention is realized by following technical proposals：
A kind of single magnetic separation-magnetic of chromium depleted zone of the present invention shakes machine sorting process, includes 12~0mm chromium depleted zone warp
One section of closed circuit grinding is crossed, scalping overflow granularity reaches the mesh of granularity -200 content 55~60%, after one section of magnetomechanical sorts,
One stage magnetic separator rough concentrate reaches -200 mesh contents 85%~90%, given by two sections of mill closed circuit grindings, secondary grading overflow granularity
Enter after one section of dehydration groove, two stage magnetic separators sort, two stage magnetic separator concentrate feed one section of dusting cover operation, the sieve of one section of dusting cover operation
Upper product feeds three sections of ball mills after dehydration permanent magnetic motor concentration and regrinded, it is characterised in that also comprises the following steps：
Three sections of ball mills, which regrind rear product granularity and reach -200 mesh contents 90% and feed three stage magnetic separators, to be sorted, three stages of magnetic separation
The concentrate of machine feeds the magnetic machine that shakes and sorted, and the magnetic of acquisition shakes the concentrate of machine and the undersize of one section of dusting cover is combined into final concentrate, product
Position is 67.3%-67.8%；One stages of magnetic separation mine tailing, one section of dehydration groove mine tailing, two stages of magnetic separation mine tailings, dehydration permanent magnetic motor mine tailing, three sections
Magnetic tailing and magnetic tail ore deposit of shaking are combined into true tailings, grade 11%-11.5%.
The described magnetic machine that shakes is shaken ore separators using KSZK-efficient magnetic of V-type 1000mm.
It is an advantage of the invention that：
Single magnetic separation-the magnetic of chromium depleted zone of the present invention shakes machine sorting process, mainly makes to shake efficient ore separators using magnetic, generation
For two sections of dehydration grooves and two sections of dusting cover operations, magnetic concentrate after regrinding is sorted by the magnetic machine that shakes, can obtain qualified grade concentrate and
Qualified grade mine tailing, without middling recurrence, reduce 50% amount of regrinding, reduce two sections of dehydration grooves, two sections of dusting cover operations it is same
When, it can make to regrind board number reduction half, simple flow, reduce beneficiation cost, remarkable in economical benefits.
Brief description of the drawings
Fig. 1 is the method selecting process figure of " stage grinding, single magnetic separation, spun yarn evenness ".
Fig. 2 shakes machine selecting process figure for a kind of single magnetic separation-magnetic of chromium depleted zone of the present invention.
Embodiment
The embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings.
As Fig. 2 shows, a kind of single magnetic separation-magnetic of chromium depleted zone of the invention shakes machine sorting process, including 12~0mm's is poor
Magnetic iron ore passes through one section of closed circuit grinding, and scalping overflow granularity reaches the mesh of granularity -200 content 55~60%, by one section of magnetomechanical
After sorting, a stage magnetic separator rough concentrate grade 48%~51%, yield 45%~47%, a stages of magnetic separation tailings grade 8%~9.5%, one
Stage magnetic separator is coarse-fine to be reached -200 mesh contents 85%~90%, feeds one by two sections of mill closed circuit grindings, secondary grading overflow granularity
Section dehydration flowing current separation is other, dehydration groove concentrate grade 52%~43%, tailings grade 10%~11%, and dehydration groove concentrate feeds two stage magnetic separators
Sort, two stage magnetic separator concentrate grades 57%~59%, two stage magnetic separator essences feed one section of dusting cover operation, the sieve of one section of dusting cover operation
Upper grade 54%~55%, oversize feed three sections of ball mills after dehydration permanent magnetic motor concentration and regrinded, it is characterised in that also include
The following steps：
Three sections of ball mills, which regrind rear product granularity and reach -200 mesh contents 90% and feed three stage magnetic separators, to be sorted, three stages of magnetic separation
The concentrate grade 61%~63% of machine, feed the magnetic machine that shakes and sort, the magnetic of acquisition shakes machine concentrate grade 67.8%~68.2%, and magnetic shakes machine essence
The undersize of ore deposit and one section of dusting cover is combined into final concentrate, grade 67.3%-67.8%；One stages of magnetic separation mine tailing, one section of dehydration groove
Mine tailing, two stages of magnetic separation mine tailings, dehydration permanent magnetic motor mine tailing, three stages of magnetic separation mine tailings and magnetic the ore separators mine tailing that shakes are combined into true tailings, product
Position 11%-11.5%.
The magnetic of the present invention machine that shakes is shaken ore separators using KSZK-efficient magnetic of V-type 1000mm.This efficiently magnetic shakes ore dressing
Machine is directly abandoned operation mine tailing as true tailings;And then give up Regrinding of other magnetic plant mine tailings as chats,
Reduce two sections of dehydration grooves and two sections of dusting cover operations, without middling recurrence, the amount of regrinding reduces 50%, can make to regrind the reduction of board number
Half, reach energy-saving, cost efficiency purpose；It can improve and select factory's disposal ability 10% or so, energy-saving notable, tool
There is considerable economic benefit.
Claims (2)
- The machine sorting process 1. a kind of single magnetic separation-magnetic of chromium depleted zone shakes, including 12~0mm chromium depleted zone are closed circuit by one section Ore grinding, scalping overflow granularity reaches -200 mesh contents 55~60%, and after a stage magnetic separator sorts, a stage magnetic separator is thick Concentrate grade 48%~51%, yield 45%~47%, a stage magnetic separator tailings grade 8%~9.5%, a stage magnetic separator rough concentrate pass through Two sections of closed circuit grindings, secondary grading overflow granularity reach -200 mesh contents 85%~90%, feed that one section of dehydration flowing current separation is other, and one section de- Tank concentrate grade 52%~43%, tailings grade 10%~11%, one section of dehydration groove concentrate feed two stage magnetic separators and sorted, two sections of magnetic Select machine concentrate grade 57%~59%, two stage magnetic separator concentrate feed one section of dusting cover operation, grade 54% on the sieve of one section of dusting cover operation ~55%, oversize feeds three sections of ball mills after dehydration permanent magnetic motor concentration and regrinded, it is characterised in that also comprises the following steps：Three sections of ball mills, which regrind rear product granularity and reach -200 mesh contents 90% and feed three stage magnetic separators, to be sorted, three stage magnetic separators Concentrate grade 61%~63%, feed the magnetic ore separators that shakes and sort, the magnetic of acquisition shakes ore separators concentrate grade 67.8%~68.2%, and magnetic shakes The undersize of ore separators concentrate and one section of dusting cover is combined into final concentrate, grade 67.3%-67.8%；One stages of magnetic separation mine tailing, one Section dehydration groove mine tailing, two stages of magnetic separation mine tailings, dehydration permanent magnetic motor mine tailing, three stages of magnetic separation mine tailings and magnetic the ore separators mine tailing that shakes are combined into finally Mine tailing, grade 11%-11.5%.
- 2. shaken machine sorting process according to the single magnetic separation-magnetic of the chromium depleted zone described in claim 1, it is characterised in that described magnetic shakes Ore separators is shaken ore separators using KSZK-efficient magnetic of V-type 1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN106000597A CN106000597A (en) | 2016-10-12 |
| CN106000597B true CN106000597B (en) | 2017-12-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN113908619B (en) * | 2021-09-24 | 2023-03-31 | 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102228860B (en) * | 2010-04-28 | 2013-01-16 | 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 |
| CN102698871B (en) * | 2012-06-17 | 2014-11-05 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN102773155B (en) * | 2012-08-17 | 2015-10-14 | 中冶长天国际工程有限责任公司 | Can be used for the fine grinding technology of microfine ore |
| CN105233976B (en) * | 2015-11-05 | 2017-07-28 | 鞍钢集团矿业有限公司 | Magnetic tailing recovery process is regrinded in preenrichment roasting |
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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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