CN102962125A - Method for reclaiming tungsten mineral from greisen mine in edge zone of quartz reef - Google Patents
Method for reclaiming tungsten mineral from greisen mine in edge zone of quartz reef Download PDFInfo
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Abstract
The invention discloses a method for reclaiming tungsten mineral from a greisen mine in the edge zone of a quartz reef, which concentrates tungsten concentrate by adopting the processes of two-stage ball milling, one-stage strong magnetic separation and three-stage reselection. According to the invention, high-gradient magnetic separation is adopted to discard more than 95% of tailings, the concentration ratio of tungsten is greater than 20, and the following process of reselection can be greatly simplified, so that the number of sets of equipment is reduced, water and electricity are saved, fields are saved, the maneuverability is strong, and the economical cost for production of tungsten concentrate can be obviously reduced. In the process, a small amount of low-grade tungsten middlings are milled and selected again, so that consumption of ore grinding is reduced, and the manufacturing cost is reduced. In the traditional process, tungsten mineral in a greisen mine in the edge zone of a quartz reef is very difficult to be reclaimed; and however, the method provided by the invention can effectively reclaim the tungsten mineral, so that contributions are made to prolonging the exploitation length for enterprises and improving economic benefits of the enterprises.
Description
Technical field
The present invention relates to the recovery method of ore, especially relate to a kind of method that from greisen ore deposit, quartz reef edge zone, reclaims tungsten mineral.
Background technology
Tungsten belongs to the high-melting-point rare metal or claims refractory metal in metallurgical and metal material field.Tungsten and alloy thereof are one of very important functional materials in modern industry, national defence and the high-technology, are widely used in the numerous areas such as space flight, atomic energy, boats and ships, auto industry, electrical industry, electronics industry, chemical industry.Particularly the tungstenic high temperature alloy is mainly used in the parts of gas turbine, rocket, guided missile and nuclear reactor, and the high-gravity tungsten-base alloy then is used for the armor-piercing head of antitank and antisub.Along with exploit year by year in the mine, dilution appears in the tungsten ore head grade, especially the quartz reef border land is composed with a large amount of greisen ore deposits the tungsten metal, be difficult to reclaim this part tungsten metal in original production beneficiation flowsheet, how this part resource is used by new technology, just seem most important.
Summary of the invention
Purpose of the present invention just provides a kind of method that reclaims tungsten mineral from greisen ore deposit, quartz reef edge zone, and the method improves tungsten recovery rate, saves ore grinding consumption, reduce production costs, shorten the ore-dressing practice flow process, reduce the table of equipment tricks, obviously reduce the financial cost that tungsten concentrate is produced.
The object of the present invention is achieved like this:
A kind of efficient separation contains the method for weak magnetic impurity scheelite, and feature is:
A, fragmentation-screening stage: the greisen ore sent in the jaw crusher slightly breaks, send into again and carry out thin broken in the gyratory crusher, then with Belt Conveying to vibratory sieve, through screening, obtain all-ore of 2mm grade;
B, ore grinding-classification stage: the ore under will sieving is sent in one section ball mill and is carried out ball milling, and mog is-200 orders, 35.4%;
C, magnetic separation stage: the one section ore pulp that obtains behind the ore grinding is sent into the SLon Verticle ring pulsating high gradient high intensity magnetic separator carry out magnetic separation, obtain tungsten ore, the condition of work of SLon Verticle ring pulsating high gradient high intensity magnetic separator magnetic separation: background field intensity＞=1 tesla, separating medium adopts coarse net shape medium, raw ore tungsten grade is 0.14%, mog is under the condition of-200 orders 35.4%, can obtain tungsten concentrate grade 3.67%, the tungsten concentration ratio reaches more than 20, productive rate 3.66%, the sorting index of the rate of recovery 95.85% is for next step reselection operation is created good in the ore deposit condition;
D, gravity treatment stage: abandon strong magnetic tail ore deposit more than 95% after the High gradient high intensity magnetic separation operation through the SLon Verticle ring pulsating high gradient high intensity magnetic separator, the high intensity magnetic mineral that obtains is sent into one section shaking table and is sorted, obtain respectively one section table concentrate: tungsten concentrate and one section shaking table mine tailing, one section table concentrate forms the first major product: WO
3Grade 45.02%, productive rate 0.22%, the rate of recovery 70.71%; Abandoning strong magnetic tail ore deposit more than 95% sends into spiral chute and sorts; sort the chute concentrate that obtains and send into two sections shaking tables and sort; obtain respectively two sections table concentrates and two sections shaking table mine tailings; send in two sections ball mills after one section shaking table mine tailing and two sections table concentrates are merged and carry out ball milling; mog be-200 orders 80%; two sections ore pulps that obtain are sent into three sections shaking tables and sorted, and obtain three sections table concentrates: inferior tungsten concentrate and three sections shaking table mine tailings, three sections table concentrates are product: the WO second time
3Grade 11.42%, productive rate 0.15%, the rate of recovery 12.21%; With the concentrate index after the first major product and for the second time product merging be: tungsten concentrate grade 31.35%, concentrate yield 0.37%, tungsten overall recovery 82.92%; It is total mine tailing that spiral chute sorts the chute mine tailing that obtains, two sections shaking table mine tailings and three sections shaking table mine tailings.
The present invention be with the greisen ore behind thick broken, thin broken, ball milling, obtain tungsten ore by the magnetic separation of SLon Verticle ring pulsating high gradient high intensity magnetic separator, then tungsten ore carries out one section table concentration, obtains tungsten concentrate.And the high intensity magnetic separation mine tailing carries out spiral chute and scans, and the chute concentrate carries out two sections shaking tables again and sorts, enter two sections ball millings after one section shaking table mine tailing and two sections table concentrates are merged after, carry out again three sections shaking tables to sort, obtain time tungsten concentrate.
Main feature of the present invention is: break through traditional single gravity concentration technological process, adopt the SLon Verticle ring pulsating high gradient high intensity magnetic separator to carry out magnetic separation, the ore-dressing practice flow process is shortened, the table of equipment tricks reduces, the strong magnetic of high gradient is roughly selected the operation recovery of tungsten more than 90%, roughly selects the tungsten concentration ratio and reaches more than 20.Roughly select operating condition by optimization, process indicator is: tungsten concentrate grade 31.35%, concentrate yield 0.37%, tungsten overall recovery 82.92%.
Therefore, the present invention and traditional handicraft relatively have the following advantages:
1, the operation of SLon Verticle ring pulsating high gradient high intensity magnetic separator High gradient high intensity magnetic separation abandons 95% above mine tailing, and the concentration ratio of tungsten is greater than 20, for the raising of tungsten recovery rate in the new technology is laid a good foundation.
2, a small amount of low-grade tungsten ore carries out regrinding and reconcentration in the flow process, has saved ore grinding consumption, has reduced production cost, for the exploitation time limit that prolongs enterprise and the economic benefit that improves enterprise have been made contribution.
3, magnetic plant is selected the SLon pulsating high gradient magnetic separator with vertical ring, this machine not only magnetic field intensity is large, and gradient is high, and key is to have disposed pulsing mechanism, the intergrowth that contains tungsten mineral and tungstenic in the greisen can be carried out repeated screening, farthest give enrichment.
Because high gradient magnetic dressing process can abandon most of mine tailing, gravity treatment flow process in back can be simplified greatly, thereby the table of equipment tricks is reduced, and water-saving and electricity-saving saves space, and is workable, can obviously reduce the financial cost that tungsten concentrate is produced.
4. traditional handicraft is difficult to the tungsten mineral in the greisen ore deposit, quartz reef edge zone is reclaimed, owing to used the SLon pulsating high gradient magnetic separator with vertical ring, this part tungsten mineral is effectively reclaimed.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
A kind of efficient separation contains the method for weak magnetic impurity scheelite, and concrete steps are as follows:
A, fragmentation-screening stage: the greisen ore sent in the jaw crusher slightly breaks, send into again and carry out thin broken in the gyratory crusher, then with Belt Conveying to vibratory sieve, through screening, obtain all-ore of 2mm grade;
B, ore grinding-classification stage: the ore under will sieving is sent in one section ball mill and is carried out ball milling, and mog is-200 orders, 35.4%;
C, magnetic separation stage: the one section ore pulp that obtains behind the ore grinding is sent into the SLon Verticle ring pulsating high gradient high intensity magnetic separator carry out magnetic separation, obtain tungsten ore, the condition of work of SLon Verticle ring pulsating high gradient high intensity magnetic separator magnetic separation: background field intensity＞=1 tesla, separating medium adopts coarse net shape medium, raw ore tungsten grade is 0.14%, mog is under the condition of-200 orders 35.4%, can obtain tungsten concentrate grade 3.67%, the tungsten concentration ratio reaches more than 20, productive rate 3.66%, the sorting index of the rate of recovery 95.85% is for next step reselection operation is created good in the ore deposit condition;
D, gravity treatment stage: abandon strong magnetic tail ore deposit more than 95% after the High gradient high intensity magnetic separation operation through the SLon Verticle ring pulsating high gradient high intensity magnetic separator, the high intensity magnetic mineral that obtains is sent into one section shaking table and is sorted, obtain respectively one section table concentrate: tungsten concentrate and one section shaking table mine tailing, one section table concentrate forms the first major product: WO
3Grade 45.02%, productive rate 0.22%, the rate of recovery 70.71%; Abandoning strong magnetic tail ore deposit more than 95% sends into spiral chute and sorts; sort the chute concentrate that obtains and send into two sections shaking tables and sort; obtain respectively two sections table concentrates and two sections shaking table mine tailings; send in two sections ball mills after one section shaking table mine tailing and two sections table concentrates are merged and carry out ball milling; mog be-200 orders, 80%; two sections ore pulps that obtain are sent into three sections shaking tables and sorted; obtain three sections table concentrates: inferior tungsten concentrate and three sections shaking table mine tailings, three sections table concentrates are product: the WO second time
3Grade 11.42%, productive rate 0.15%, the rate of recovery 12.21%; With the concentrate index after the first major product and for the second time product merging be: tungsten concentrate grade 31.35%, concentrate yield 0.37%, tungsten overall recovery 82.92%; It is total mine tailing that spiral chute sorts the chute mine tailing that obtains, two sections shaking table mine tailings and three sections shaking table mine tailings.
The present invention and traditional handicraft are in the index contrast of Inner Mongol Mu Qinqi tungsten ore, and be as shown in table 1.
From upper table as seen, the tungsten concentrate and the comparison of traditional gravity separation technology produced with the present invention, in the identical situation of original quality, but the tungsten concentrate quality that obtains increases substantially, and the tungsten concentrate grade is promoted to 31.35% by 18.96%, has improved 12.39 percentage points; The rate of recovery brings up to 82.92% from 22.75%, has improved 60.17 percentage points, has reached the requirement of reclaiming this part tungsten resource, for the exploitation time limit that prolongs enterprise and the economic benefit that improves enterprise have been made contribution.
Claims (1)
1. the method for magnetic impurity scheelite a little less than an efficient separation contains is characterized in that:
A, fragmentation-screening stage: the greisen ore sent in the jaw crusher slightly breaks, send into again and carry out thin broken in the gyratory crusher, then with Belt Conveying to vibratory sieve, through screening, obtain all-ore of 2mm grade;
B, ore grinding-classification stage: the ore under will sieving is sent in one section ball mill and is carried out ball milling, and mog is-200 orders, 35.4%;
C, magnetic separation stage: the one section ore pulp that obtains behind the ore grinding is sent into the SLon Verticle ring pulsating high gradient high intensity magnetic separator carry out magnetic separation, obtain tungsten ore, the condition of work of SLon Verticle ring pulsating high gradient high intensity magnetic separator magnetic separation: background field intensity＞=1 tesla, separating medium adopts coarse net shape medium, raw ore tungsten grade is 0.14%, mog is under the condition of-200 orders 35.4%, can obtain tungsten concentrate grade 3.67%, the tungsten concentration ratio reaches more than 20, productive rate 3.66%, the sorting index of the rate of recovery 95.85% is for next step reselection operation is created good in the ore deposit condition;
D, gravity treatment stage: abandon strong magnetic tail ore deposit more than 95% after the High gradient high intensity magnetic separation operation through the SLon Verticle ring pulsating high gradient high intensity magnetic separator, the high intensity magnetic mineral that obtains is sent into one section shaking table and is sorted, obtain respectively one section table concentrate: tungsten concentrate and one section shaking table mine tailing, one section table concentrate forms the first major product: WO
3Grade 45.02%, productive rate 0.22%, the rate of recovery 70.71%; Abandoning strong magnetic tail ore deposit more than 95% sends into spiral chute and sorts; sort the chute concentrate that obtains and send into two sections shaking tables and sort; obtain respectively two sections table concentrates and two sections shaking table mine tailings; send in two sections ball mills after one section shaking table mine tailing and two sections table concentrates are merged and carry out ball milling; mog be-200 orders, 80%; two sections ore pulps that obtain are sent into three sections shaking tables and sorted; obtain three sections table concentrates: inferior tungsten concentrate and three sections shaking table mine tailings, three sections table concentrates are product: the WO second time
3Grade 11.42%, productive rate 0.15%, the rate of recovery 12.21%; With the concentrate index after the first major product and for the second time product merging be: tungsten concentrate grade 31.35%, concentrate yield 0.37%, tungsten overall recovery 82.92%; It is total mine tailing that spiral chute sorts the chute mine tailing that obtains, two sections shaking table mine tailings and three sections shaking table mine tailings.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103301946A (en) * | 2013-06-25 | 2013-09-18 | 湖南柿竹园有色金属有限责任公司 | Grading and branching streaming flotation method of tungsten ore |
| CN103464275A (en) * | 2013-09-12 | 2013-12-25 | 阿勒泰正元国际矿业有限公司 | Beneficiation method and device for quartz vein type gold deposit |
| CN104096627A (en) * | 2014-07-15 | 2014-10-15 | 赣州金环磁选设备有限公司 | Method for effectively improving mineral processing efficiency of wolframite |
| CN104772210A (en) * | 2015-03-25 | 2015-07-15 | 江西稀有稀土金属钨业集团有限公司 | Ore dressing process for tungsten dressing tailing comprehensive utilization |
| CN105214849A (en) * | 2015-11-02 | 2016-01-06 | 中南大学 | A kind of beneficiation method improving scheelite concentration process concentrate grade |
| CN109894268A (en) * | 2019-03-26 | 2019-06-18 | 赣州金环磁选设备有限公司 | A kind of wolframite throwing tail proposes the beneficiation method of essence |
| CN110398534A (en) * | 2019-08-28 | 2019-11-01 | 井冈山大学 | A kind of the automatic identification method for separating and its detection identification device of tungsten ore primary election |
| CN111229449A (en) * | 2020-02-26 | 2020-06-05 | 赣州有色冶金研究所 | Tungsten ore sorting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103464275A (en) * | 2013-09-12 | 2013-12-25 | 阿勒泰正元国际矿业有限公司 | Beneficiation method and device for quartz vein type gold deposit |
| CN103464275B (en) * | 2013-09-12 | 2015-05-20 | 阿勒泰正元国际矿业有限公司 | Beneficiation method and device for quartz vein type gold deposit |
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| CN104096627A (en) * | 2014-07-15 | 2014-10-15 | 赣州金环磁选设备有限公司 | Method for effectively improving mineral processing efficiency of wolframite |
| CN104772210A (en) * | 2015-03-25 | 2015-07-15 | 江西稀有稀土金属钨业集团有限公司 | Ore dressing process for tungsten dressing tailing comprehensive utilization |
| CN105214849A (en) * | 2015-11-02 | 2016-01-06 | 中南大学 | A kind of beneficiation method improving scheelite concentration process concentrate grade |
| CN109894268A (en) * | 2019-03-26 | 2019-06-18 | 赣州金环磁选设备有限公司 | A kind of wolframite throwing tail proposes the beneficiation method of essence |
| CN109894268B (en) * | 2019-03-26 | 2020-07-14 | 赣州金环磁选设备有限公司 | Beneficiation method for tailing discarding and refining of wolframite |
| CN110398534A (en) * | 2019-08-28 | 2019-11-01 | 井冈山大学 | A kind of the automatic identification method for separating and its detection identification device of tungsten ore primary election |
| CN111229449A (en) * | 2020-02-26 | 2020-06-05 | 赣州有色冶金研究所 | Tungsten ore sorting method |
| CN111229449B (en) * | 2020-02-26 | 2021-11-09 | 赣州有色冶金研究所有限公司 | Tungsten ore sorting method |
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Address after: 341000 Jiangxi province Zhanggong District of Ganzhou City, Shahe Industrial Park Patentee after: Ganzhou Jinhuan magnetic separation technology and Equipment Co.,Ltd. Address before: 341000 Jiangxi province Zhanggong District of Ganzhou City, Shahe Industrial Park Patentee before: SLON MAGNETIC SEPARATOR Ltd. |
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