CN1895788B - Concentration method for qualifying headings and increasing recovery rate - Google Patents
Concentration method for qualifying headings and increasing recovery rate Download PDFInfo
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- CN1895788B CN1895788B CN2005100318513A CN200510031851A CN1895788B CN 1895788 B CN1895788 B CN 1895788B CN 2005100318513 A CN2005100318513 A CN 2005100318513A CN 200510031851 A CN200510031851 A CN 200510031851A CN 1895788 B CN1895788 B CN 1895788B
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Abstract
An ore dressing technology for increasing the quality and recovery rate of ore concentrate includes such steps as crushing, rolling, grinding, and separating. Another two approaches are also disclosed.
Description
Technical field
The invention belongs to a kind of ore-dressing technique method, be specifically related to the process of indexs such as a kind of concentrate grade that improves the mineral ore dressing and the rate of recovery, be applicable to sort in iron ore, other metallic ore, nonmetallic ore and the industrial residue to sort in the process of useful metal or useful component or the like.
Background technology
Existing ore dressing mode mainly contains flotation, magnetic separation, electric separation, gravity treatment etc.Fragmentation → ore grinding → operations such as ore dressing are generally adopted in its technological process, adopt different mineral processing circuits to depend mainly on the characteristic of mineral.After adopting a certain mineral processing circuit, its main ore-dressing technique index has the rate of recovery of concentrate grade, tailings grade, valuable mineral etc. in the ore dressing process of reality, the factor that influences these ore-dressing technique indexs at technical elements mainly contains beneficiation method, technology, equipment, in addition, also with mineral in valuable mineral and the dissociation degree of gangue very big relation is arranged, conventional ore dressing crushing process is general, and to adopt traditional disintegrating machine be jaw crusher, gyratory crusher etc.+ball mill.Ball mill mainly is to adopt the mode powder ore that grinds and grind stripping, and its weak point mainly is that dissociating of valuable mineral and gangue is abundant inadequately, and the sufficient part valuable mineral that dissociates is often ground too for a short time again, so that becomes the awkward particle that selects.Ore is when being milled to the granularity that can sort in addition, and its grain shape often approaches sphere, and this spheric granules sorting result under general situation is also relatively poor.These reasons all make the ore-dressing technique index be difficult to improve, and the economic benefit in mine is low, and has wasted a large amount of non-renewable mineral useful resources.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the deficiencies in the prior art, a kind of pretreatment process that increases before conventional ore grinding is proposed, or adopt new grinding mode to replace the scheme of conventional grinding mode, promptly adopt bed of material rolling-type disintegrating apparatus to enter the ultra-fine broken equipment before the conventional grinding machine or be directly used in grinding attachment as ore, thereby reach and significantly improve the ore-dressing technique index and promptly significantly improve concentrate grade, reduce the rate of recovery of tailings grade and increase valuable mineral etc., increase substantially the mineral products quality, and the while can significantly cut down the consumption of energy and increase effects such as output.The economic benefit in mine and ore dressing plant can be significantly improved like this, and the waste of a large amount of valuable mineral resources of country can be reduced significantly.
Technical scheme of the present invention is: a kind of ore-dressing technique method that improves the concentrate grade and the rate of recovery, comprise fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken (or corase grind) behind the broken process before ball mill or other ore mills, the product after it is pulverized is as the feed of Grinding procedure.Described bed of material rolling-type disintegrating apparatus, but be the roller mill of column mill or high pressure roll press or bottom discharging.The preferential column mill that adopts.
The present invention also provides a kind of ore-dressing technique method that improves the concentrate grade and the rate of recovery, comprise fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the broken process before ball mill, the product after it is pulverized is as the feed of Grinding procedure; Described bed of material rolling-type disintegrating apparatus is a tube roller mill.
A kind of ore-dressing technique method that improves the concentrate grade and the rate of recovery, comprise fragmentation, autogenous tumbling mill ore grinding, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the autogenous tumbling mill Grinding procedure before ball mill or other grinding machine, the product after it is pulverized is as the feed of ball mill or other grinding machine Grinding procedure.Described bed of material rolling-type disintegrating apparatus, but be the roller mill of column mill or high pressure roll press or bottom discharging.Bed of material rolling-type disintegrating apparatus preferentially adopts column mill.
The present invention also provides a kind of ore-dressing technique method that improves the concentrate grade and the rate of recovery, comprise fragmentation, autogenous tumbling mill ore grinding, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the autogenous tumbling mill Grinding procedure before ball mill, the product after it is pulverized is as the feed of ball mill Grinding procedure; Described bed of material rolling-type disintegrating apparatus is a tube roller mill.
A kind of ore-dressing technique method that improves the concentrate grade and the rate of recovery comprises fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt the equipment of bed of material rolling-type disintegrating apparatus as ore grinding.Described bed of material rolling-type disintegrating apparatus, but be the roller mill of column mill or high pressure roll press or bottom discharging.The preferential tube roller mill that adopts.
The present invention also provides a kind of ore-dressing technique method that improves the concentrate grade and the rate of recovery, comprises fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt the equipment of bed of material rolling-type disintegrating apparatus as ore grinding; Described bed of material rolling-type disintegrating apparatus is a tube roller mill.
Adopt bed of material rolling-type disintegrating apparatus to make ultra-fine broken before the ball mill grinding process, or when being directly used in ore grinding, since the junction of valuable mineral and gangue be combination interface adhesion a little less than, when ore or material are being subjected to repeated multiple times extruding or high pressure and are rolling under the bed of material situation after, fatigue fracture promptly can take place or crack and internal stress in the combination interface of valuable mineral and gangue, the part combination interface under high pressure also can produce immediately and break, like this, the liberation degree of minerals that a part reaches the valuable mineral of the qualified grade of ore dressing just has bigger raising, another part does not reach the coarse grained inside of the qualified grade of ore dressing, the combination interface place that mainly is valuable mineral and gangue has produced crackle and internal stress, when such coarse granule continues ore grinding, or after sending in the ball mill, valuable mineral and gangue have just obtained better and faster to dissociate, the certain better effects if of the beneficiating efficiency of the valuable mineral that liberation degree of minerals is high and index.In addition, a part reach monomer dissociation qualified grade ore in the form of sheets or polyhedral, and valuable mineral is crossed as ball mill and is milled to too little difficulty and selects particle, the raising of these mineral processing indexs that all are highly advantageous to.Concentrate grade can be improved 2%～25% on the original basis, after concentrate grade was significantly increased, other in the concentrate was harmful to or unhelpful composition generally also can significantly reduce, and further improved the quality and the value of concentrate so again.The rate of recovery can improve 3%～50% on original index, tailings grade also has corresponding reduction.In addition, in the ball milling Grinding procedure, adopted above-mentioned ultra-fine broken operation after, significantly reduced the feeding granularity of ball mill, promptly adopted the technology of how broken few mill, therefore also can significantly improve the disposal ability of ball mill and reduce the power consumption of grinding system and steel consumption etc.When adopting bed of material rolling-type disintegrating apparatus directly as grinding attachment, have above-mentioned mechanism and the effect that significantly improves mineral processing index equally, also can significantly reduce system's power consumption etc. simultaneously.
Description of drawings
Fig. 1 is the beneficiation flowsheet figure of the embodiment of the invention 1;
Fig. 2 is the beneficiation flowsheet figure of the embodiment of the invention 2;
Fig. 3 is the beneficiation flowsheet figure of the embodiment of the invention 3;
The specific embodiment
Embodiment 1
As shown in Figure 1, adopt bed of material rolling-type disintegrating apparatus to make ultra-fine broken (or corase grind) after the ore reduction, ore grinding adopts ball mill (one or more snippets ore grinding), and grinding machine also can adopt other grinding attachment.Behind the ore grinding smitham is carried out ore dressing.When ore (or material) granularity hour, can not need broken process.
Embodiment 2
As shown in Figure 2, adopt autogenous tumbling mill as primary grinding (also can adopt the ball milling primary grinding) after the ore reduction, classified back coarse grain enters ultra-fine broken (or corase grind) of bed of material rolling-type disintegrating apparatus, last ore grinding adopts ball mill (one or more snippets ore grinding), grinding machine also can adopt other grinding attachment, behind ore grinding the smitham ore is carried out ore dressing.
Embodiment 3
As shown in Figure 3, directly adopt bed of material rolling-type disintegrating apparatus after the ore reduction, then smitham is directly carried out ore dressing as grinding attachment.When ore (or material) granularity hour, can not need broken process.
Above-mentioned three accompanying drawings have only been expressed 3 kinds of main technological processes, the situation different according to the scene, the corresponding technological processes that also can make different complexity, can adopt carse, medium and small 3 sections broken process such as fragmentation, or ore grain size is little and do not need broken process, and in accompanying drawing 1, ore grinding also can be 1～3 section Grinding procedure, but be used for ultra-fine when broken, only therein before the primary grinding equipment configuration bed of material rolling-type disintegrating apparatus get final product.In above-mentioned technological process, only expressed main operation, other for example not expression of operation such as classification, conveying.
In the broken process of above-mentioned accompanying drawing, jaw crusher or gyratory crusher are adopted in general coarse crushing, also can adopt the disintegrating machine of other type, in the disintegrating machine of broken (or standard type) gyratory crusher or other type in the broken general employing, the disintegrating machine of general employing in small, broken bits gyratory crusher in small, broken bits or other type.When the feed particle diameter of ore (or material) hour, can reduce broken process; When feed particle diameter during less than 100 millimeters, also can save thick, in and fine crushing process.When the bed of material rolling-type disintegrating apparatus of mentioning in the accompanying drawing is used for ultra-fine broken (or corase grind), the preferential column mill that adopts, this equipment has effective, as to adapt to face width advantage in broken ultra-fine, and this also is a kind of of bed of material roller press type equipment, rather than the sort of monolayer of particles disintegrating apparatus.Described column mill is that a kind of grinding roller rotation is revolved round the sun again, and the mill of bottom does not change, and grinding roller has adjustable gap between mill, and ore is from machine top feed, after the pulverizing, ore can regulate from machine bottom one thickness of feed layer the discharging opening discharge.But bed of material rolling-type disintegrating apparatus also can adopt bed of material rolling-type disintegrating apparatus such as the roller mill (Vertical Mill), tube roller mill of the discharging of high pressure roll press bottom.When adopting bed of material rolling-type disintegrating apparatus directly as grinding attachment, can preferentially adopt a roller mill (being horizontal mill), this equipment has the fineness height when ore grinding, output is big and the advantage of adaptation face width.Ore grinding among attached Fig. 1 and 2 generally can adopt conventional grinding attachments such as ball mill, autogenous tumbling mill, stirring mill.Generally all require to adopt classifying equipoment that qualified grade is in time separated during ore grinding and enter ore dressing, the coarse grain that grader sorts out returns grinding machine and forms closed circuit grinding with grinding machine, generally operations such as classification is not listed in the accompanying drawings.In beneficiating process, main ore dressing mode is flotation and magnetic separation, and alternate manner also has modes such as gravity treatment, electric separation.Corresponding apparatus is preparation equipments such as flotation device, magnetic separator.When adopting bed of material rolling-type disintegrating apparatus as grinding attachment, generally all must supporting classifying equipoment.When adopting bed of material rolling-type disintegrating apparatus as super fine crusher or corase grind equipment, its product granularity should be in 5 millimeter, general best below 3 millimeters or thinner, when product granularity during greater than 5 millimeters, its mineral processing index has raising equally, but generally can be lower than the effect of product granularity hour, ultra-fine broken to different ores should be determined in test the product granularity that comprehensive benefit is preferable.
Claims (8)
1. ore-dressing technique method that can improve the concentrate grade and the rate of recovery, comprise fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the broken process before ball mill, the product after it is pulverized is as the feed of Grinding procedure; But described bed of material rolling-type disintegrating apparatus is the roller mill of column mill or high pressure roll press or bottom discharging.
2. the ore-dressing technique method that improves the concentrate grade and the rate of recovery according to claim 1 is characterized in that: bed of material rolling-type disintegrating apparatus adopts column mill.
3. ore-dressing technique method that can improve the concentrate grade and the rate of recovery, comprise fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the broken process before ball mill, the product after it is pulverized is as the feed of Grinding procedure; Described bed of material rolling-type disintegrating apparatus is a tube roller mill.
4. ore-dressing technique method that can improve the concentrate grade and the rate of recovery, comprise fragmentation, autogenous tumbling mill ore grinding, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the autogenous tumbling mill Grinding procedure before ball mill, the product after it is pulverized is as the feed of ball mill Grinding procedure; But described bed of material rolling-type disintegrating apparatus is the roller mill of column mill or high pressure roll press or bottom discharging.
5. the ore-dressing technique method that improves the concentrate grade and the rate of recovery according to claim 4 is characterized in that: bed of material rolling-type disintegrating apparatus adopts column mill.
6. ore-dressing technique method that can improve the concentrate grade and the rate of recovery, comprise fragmentation, autogenous tumbling mill ore grinding, ore grinding, beneficiating process, it is characterized in that: adopt bed of material rolling-type disintegrating apparatus to carry out ultra-fine broken or corase grind behind the autogenous tumbling mill Grinding procedure before ball mill, the product after it is pulverized is as the feed of ball mill Grinding procedure; Described bed of material rolling-type disintegrating apparatus is a tube roller mill.
7. the ore-dressing technique method that can improve the concentrate grade and the rate of recovery comprises fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt the equipment of bed of material rolling-type disintegrating apparatus as ore grinding; But described bed of material rolling-type disintegrating apparatus is the roller mill of column mill or high pressure roll press or bottom discharging.
8. the ore-dressing technique method that can improve the concentrate grade and the rate of recovery comprises fragmentation, ore grinding, beneficiating process, it is characterized in that: adopt the equipment of bed of material rolling-type disintegrating apparatus as ore grinding; Described bed of material rolling-type disintegrating apparatus is a tube roller mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100318513A CN1895788B (en) | 2005-07-11 | 2005-07-11 | Concentration method for qualifying headings and increasing recovery rate |
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| CN2005100318513A CN1895788B (en) | 2005-07-11 | 2005-07-11 | Concentration method for qualifying headings and increasing recovery rate |
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| CN1895788A CN1895788A (en) | 2007-01-17 |
| CN1895788B true CN1895788B (en) | 2010-04-28 |
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| CN2005100318513A Expired - Fee Related CN1895788B (en) | 2005-07-11 | 2005-07-11 | Concentration method for qualifying headings and increasing recovery rate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012006937A1 (en) * | 2010-07-15 | 2012-01-19 | 广西有色金属集团汇元锰业有限公司 | Method for grinding manganese dioxide ore |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041920B (en) * | 2012-12-19 | 2016-07-20 | 太原钢铁(集团)有限公司 | A kind of beneficiation method being suitable for chromium depleted zone and ore-sorting system |
| CN105268532A (en) * | 2015-11-27 | 2016-01-27 | 成都熠铭机械设备制造有限公司 | Combined crushing and grinding system |
| CN107983519A (en) * | 2017-11-29 | 2018-05-04 | 北京环磨科技有限公司 | A kind of roller-plate disintegrator circuit grinding |
| CN113019658A (en) * | 2021-03-30 | 2021-06-25 | 攀枝花学院 | Magnetic separation-electric separation combined titanium separation method |
| CN115888943A (en) * | 2022-10-28 | 2023-04-04 | 鞍钢集团矿业有限公司 | Short-process efficient grinding and sorting process for micro-fine particle lean magnetic iron ore |
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2005
- 2005-07-11 CN CN2005100318513A patent/CN1895788B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 吴建明.辊压机在铝土矿粉碎中的应用.有色金属（选矿部分） 2.2002,(2),33-35. |
| 吴建明.辊压机在铝土矿粉碎中的应用.有色金属(选矿部分) 2.2002,(2),33-35. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012006937A1 (en) * | 2010-07-15 | 2012-01-19 | 广西有色金属集团汇元锰业有限公司 | Method for grinding manganese dioxide ore |
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Assignee: Changsha Shenxiang Universal Machine Co., Ltd. Assignor: Hao Zhigang Contract record no.: 2011430000088 Denomination of invention: Concentration for qualifying headings and increasing recovery rate Granted publication date: 20100428 License type: Exclusive License Open date: 20070117 Record date: 20110624 |
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Granted publication date: 20100428 Termination date: 20190711 |