CN101716554A - Ore dressing process capable of effectively recovering magnetic iron ore smaller than 12mm - Google Patents
Ore dressing process capable of effectively recovering magnetic iron ore smaller than 12mm Download PDFInfo
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- CN101716554A CN101716554A CN200910186710A CN200910186710A CN101716554A CN 101716554 A CN101716554 A CN 101716554A CN 200910186710 A CN200910186710 A CN 200910186710A CN 200910186710 A CN200910186710 A CN 200910186710A CN 101716554 A CN101716554 A CN 101716554A
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Abstract
The invention relates to ore dressing process capable of effectively recovering magnetic iron ore smaller than 12mm. Separation process of dry-type magnetic separation grab picking and wet-type magnetic separation scavenging is adopted for the ore smaller than 12mm according to ore characteristics of the magnetite, martite and semi-martite. Under a condition that yields of abandoned barren rock are the same, the ore dressing process can improve operation recovery rate of the magnetite, the martite and the semi-martite by about 5 percent compared with that of single dry-type magnetic separation. Most dry qualified ore and less wet qualified ore enter ore grinding operation together, and dewatering operation during single wet-type magnetic separation is not needed so as to save construction investment, simplify equipment configuration, make concentration of ore grinding operation easy to control, ensure concentration stability of the ore grinding operation and be favorable for production of subsequent operation. Therefore, the ore dressing process further improves ore recovery rates of the magnetite, the martite and the semi-martite magnetite.
Description
Technical field
The present invention relates to a kind of ore-dressing technique that can effectively reclaim magnetic iron ore, martite, half martite, relate in particular to a kind of ore-dressing technique that can effectively improve magnetic iron ore less than 12mm, martite, the half martite rate of recovery.
Background technology
Owing to have certain horsestone and country rock from the Iron Ore of stope extraction, for reducing into the mill ore amount, reach the purpose that reduces cost, usually adopt dry type magnetic separation to throw useless in advance, but dry type magnetic separation should rationally adopt, if the barren rock ferrous grade height that dry separation is abandoned, the amount of metal of loss is more, unreasonable economically, then should not adopt.The grade of dry separation barren rock depends on the degree of dissociation and the washability of magnetic iron ore.Practice shows, the more fine fraction ore dry separation effect of ore that lumpiness is excessive and moisture is often bad, thus generally according to result of the test in dry type magnetic separation to be set before the broken back, screening more suitable, the barren rock productive rate of abandoning can reach 15～30%, the barren rock grade is lower than tailings grade, can adopt it.For fine fraction ore less than 12mm, what have throws useless with dry type magnetic separation in advance, it is useless also to adopt wet magnetic separation to throw in advance in recent years, and the wet magnetic separation effect is than dry type magnetic separation better effects if, and the operation recovery of its magnetic iron ore, martite, half martite is higher by about 5% than dry type magnetic separation.But wet magnetic separation output investment ratio dry type magnetic separation is higher, and for guaranteeing the concentration of follow-up grinding operation, wet magnetic separation need increase dewatering operation, makes that the equipment configuration is more complicated.How from fine fraction iron ore, to abandon barren rock less than 12mm, both effectively improved the rate of recovery of magnetic iron ore, martite, half martite, do not increase too big investment again, reduce and go into to grind ore amount, reach a great problem that the purpose that reduces production costs is ore dressing circle, therefore, be necessary to invent a kind of new ore dressing that can effectively improve magnetic iron ore less than 12mm, martite, the half martite rate of recovery and throw useless technology.
Summary of the invention
The object of the present invention is to provide a kind of ore-dressing technique that can effectively reclaim less than the magnetic iron ore of 12mm, this ore-dressing technique both can improve magnetic iron ore, martite, half martite rate of recovery index, can reduce investment outlay again, reduced production costs.
A kind of ore-dressing technique that can effectively reclaim less than the 12mm magnetic iron ore is characterized in that: according to the characteristics of magnetic iron ore, martite, half martite ore, for the ore less than 12mm, adopt dry type magnetic separation to roughly select, the throwing that wet magnetic separation the is scanned technology of giving up.
A kind of ore-dressing technique that can effectively reclaim less than the 12mm magnetic iron ore, it is characterized in that: carry out dry type magnetic separation earlier and obtain most of qualified ore of doing, the qualified ore that this major part is done directly enters ore grinding, the mine tailing of dry type magnetic separation operation enters wet magnetic separation again and obtains the wet qualified ore of fraction, the qualified ore that this fraction is wet also enters ore grinding, the final barren rock of wet magnetic separation output.Like this under the identical situation of the barren rock productive rate of abandoning, can make magnetic iron ore, martite, the half martite rate of recovery is higher by about 5% than independent dry type magnetic separation, the qualified ore of doing because of major part enters ore grinding with the wet qualified ore of fraction, dewatering operation when not needing independent wet magnetic separation, saved construction investment, simplified the equipment configuration, and make the grinding operation concentration in this technology be easier to control, guaranteed the grinding operation concentration stabilize, help the production of subsequent job, thereby further can improve magnetic iron ore, martite, the rate of recovery of half martite ore.
Description of drawings
Fig. 1 can effectively reclaim mineral processing circuit figure less than the magnetic iron ore of 12mm for the present invention.
Fig. 2 can effectively reclaim ore-dressing technique layout of equipment less than the magnetic iron ore of 12mm for the present invention.
The specific embodiment
A kind of ore-dressing technique that can effectively reclaim less than the 12mm magnetic iron ore, magnetic iron ore less than 12mm, martite, half martite ore 1 is delivered to through rubber conveyer 2 and sorts grinding building, and carry out dry type magnetic separation by the dry-dressing machine 3 of these rubber conveyer 2 heads, the qualified ore 4 usefulness funnels 5 of dry separation are delivered to ore mill material bin 6 and are reentered grinding machine and carry out ore grinding, the barren rock of dry type magnetic separation is that mine tailing 7 usefulness funnels 8 feed and are arranged in that the wet magnetic separator 9 on the platform carries out wet magnetic separation under the rubber conveyer 2, the qualified ore 10 usefulness funnels 11 of wet magnetic separation are delivered in the funnel 5 to merge to enter with the qualified ore 4 of dry separation and are reentered grinding machine behind the ore mill material bin 6 and carry out ore grinding, and the wet magnetic separation barren rock is that mine tailing 12 send the barren rock treatment system through funnel 13; The qualified ore 4 of this technology output dry type magnetic separation, the qualified ore 10 of wet magnetic separation and wet magnetic separation barren rock (being mine tailing) 12.Like this under the barren rock productive rate of abandoning is 12% situation, can make magnetic iron ore, martite, the half martite rate of recovery is higher by about 5% than independent dry type magnetic separation, the qualified ore of doing because of major part enters ore grinding with the wet qualified ore of fraction, dewatering operation when not needing independent wet magnetic separation, saved construction investment, simplified the equipment configuration, and make the grinding operation concentration in this technology be easier to control, guaranteed the grinding operation concentration stabilize, help the production of subsequent job, thereby further improve magnetic iron ore, martite, the rate of recovery of half martite ore.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention; make some alternative or obvious modification that are equal to without departing from the inventive concept of the premise; and performance or purposes are identical, then should be considered as belonging to the protection domain that the present invention is determined by claims of being submitted to.
Claims (3)
1. ore-dressing technique that can effectively reclaim less than the 12mm magnetic iron ore, it is characterized in that: according to the characteristics of magnetic iron ore, martite, half martite ore, for ore, adopt dry type magnetic separation to roughly select, the throwing that wet magnetic separation the is scanned technology of giving up less than 12mm.
2. the ore-dressing technique that can effectively reclaim according to claim 1 less than the 12mm magnetic iron ore, it is characterized in that: carry out dry type magnetic separation earlier and obtain most of qualified ore of doing, the qualified ore that this major part is done directly enters ore grinding, the mine tailing of dry type magnetic separation operation enters wet magnetic separation again and obtains the wet qualified ore of fraction, the qualified ore that this fraction is wet also enters ore grinding, the final barren rock of wet magnetic separation output.
3. the ore-dressing technique that can effectively reclaim according to claim 1 and 2 less than the 12mm magnetic iron ore, it is characterized in that: be delivered to through rubber conveyer (2) less than the ore (1) of 12mm and sort grinding building, and carry out dry type magnetic separation by the dry-dressing machine (3) of this rubber conveyer (2) head, the qualified ore of dry separation (4) is delivered to ore mill material bin (6) with funnel (5) and is reentered grinding machine and carry out ore grinding, to be mine tailing (7) with funnel (8) feed the barren rock of dry type magnetic separation is arranged in that the wet magnetic separator (9) on the platform carries out wet magnetic separation under the rubber conveyer (2), the qualified ore of wet magnetic separation (10) is delivered in the funnel (5) to merge to enter with the qualified ore of dry separation (4) with funnel (11) and is reentered grinding machine behind the ore mill material bin (6) and carry out ore grinding, and the wet magnetic separation barren rock is that mine tailing (12) send the barren rock treatment system through funnel (13); This qualified ore of technology output dry type magnetic separation (4), the qualified ore of wet magnetic separation (10) and wet magnetic separation barren rock are mine tailing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101867107A CN101716554B (en) | 2009-12-15 | 2009-12-15 | Ore dressing process capable of effectively recovering magnetic iron ore smaller than 12mm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101867107A CN101716554B (en) | 2009-12-15 | 2009-12-15 | Ore dressing process capable of effectively recovering magnetic iron ore smaller than 12mm |
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| CN101716554A true CN101716554A (en) | 2010-06-02 |
| CN101716554B CN101716554B (en) | 2011-11-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189038A (en) * | 2011-03-22 | 2011-09-21 | 河北钢铁集团矿业有限公司 | Preliminary separation process for ferromagnetic ore separation |
| CN104399578A (en) * | 2014-10-28 | 2015-03-11 | 中钢集团马鞍山矿山研究院有限公司 | Pre-selection method for low-grade hematite-containing waste rock |
| CN104549713A (en) * | 2015-01-13 | 2015-04-29 | 辽宁科技大学 | Simple and efficient magnetic separation method for low-grade iron minerals |
| CN112588433A (en) * | 2020-12-15 | 2021-04-02 | 安徽太平矿业有限公司 | Skarn type copper-containing gold magnetite beneficiation process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4248700A (en) * | 1979-04-13 | 1981-02-03 | Raytheon Company | Transit materials separator |
| CN101062502A (en) * | 2006-04-28 | 2007-10-31 | 张颖智 | Mineral concentration new technique for weak-magnetic iron ore |
| CN101134176A (en) * | 2007-10-15 | 2008-03-05 | 王林 | Low grade iron ore roughing separation equipment |
-
2009
- 2009-12-15 CN CN2009101867107A patent/CN101716554B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189038A (en) * | 2011-03-22 | 2011-09-21 | 河北钢铁集团矿业有限公司 | Preliminary separation process for ferromagnetic ore separation |
| CN104399578A (en) * | 2014-10-28 | 2015-03-11 | 中钢集团马鞍山矿山研究院有限公司 | Pre-selection method for low-grade hematite-containing waste rock |
| CN104399578B (en) * | 2014-10-28 | 2017-01-18 | 中钢集团马鞍山矿山研究院有限公司 | Pre-selection method for low-grade hematite-containing waste rock |
| CN104549713A (en) * | 2015-01-13 | 2015-04-29 | 辽宁科技大学 | Simple and efficient magnetic separation method for low-grade iron minerals |
| CN104549713B (en) * | 2015-01-13 | 2017-04-19 | 辽宁科技大学 | Simple and efficient magnetic separation method for low-grade iron minerals |
| CN112588433A (en) * | 2020-12-15 | 2021-04-02 | 安徽太平矿业有限公司 | Skarn type copper-containing gold magnetite beneficiation process |
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| CN101716554B (en) | 2011-11-09 |
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Address after: 330031 No. 888, Qian Hu Road, Hongjiao Island, Nanchang, Jiangxi. Patentee after: China ruim engineering technology Limited by Share Ltd Address before: No. 1, Bayi Avenue, Nanchang, Jiangxi Province, Jiangxi Patentee before: China Nerin Engineering Co., Ltd. |
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