CN102962125B - 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 PDF

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CN102962125B
CN102962125B CN201210534161.XA CN201210534161A CN102962125B CN 102962125 B CN102962125 B CN 102962125B CN 201210534161 A CN201210534161 A CN 201210534161A CN 102962125 B CN102962125 B CN 102962125B
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tungsten
sections
ore
shaking
grade
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CN102962125A (en
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饶宇欢
陈荣
黄会春
范志坚
廖国平
彭征
王勇平
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SLON MAGNETIC SEPARATOR Ltd
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SLON MAGNETIC SEPARATOR Ltd
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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

From greisen ore deposit, quartz reef edge zone, reclaim the method for tungsten mineral
Technical field
The present invention relates to the recovery method of ore, especially relate to a kind of method that reclaims tungsten mineral from greisen ore deposit, quartz reef edge zone.
Background technology
Tungsten belongs to 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 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 tungstenic high temperature alloy is mainly used in the parts of gas turbine, rocket, guided missile and nuclear reactor, and high-gravity tungsten-base alloy is for antitank and armor-piercing head antisub.Along with exploit year by year in mine, there is dilution in tungsten ore head grade, especially quartz reef border land is composed and is had tungsten metal with a large amount of greisen ore deposits, in original production beneficiation flowsheet, be difficult to reclaim this part tungsten metal, how this part resource is used by new technology, just seem most important.
Summary of the invention
Object of the present invention is just to provide 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 ore-dressing practice flow process, reduce table of equipment tricks, obviously reduce the financial cost that tungsten concentrate is produced.
The object of the present invention is achieved like this:
Efficient separation is containing a method for weak magnetic impurity scheelite, and feature is:
A, fragmentation-screening stage: greisen ore is sent in jaw crusher and is slightly broken, then send into and in gyratory crusher, carry out thin broken, then with Belt Conveying to vibratory sieve, through screening, obtain the ore of all-2mm grade;
B, ore grinding-classification stage: the ore under sieve is sent in one section of ball mill and carried out ball milling, and mog is-200 orders, 35.4%;
C, magnetic separation stage: the one section of ore pulp obtaining after ore grinding is sent into SLon Verticle ring pulsating high gradient high intensity magnetic separator and 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 ore grade 3.67%, tungsten concentration ratio reaches more than 20, productive rate 3.66%, the sorting index of the rate of recovery 95.85%, for next step reselection operation is created good in ore deposit condition;
D, gravity treatment stage: after the High gradient high intensity magnetic separation operation of SLon Verticle ring pulsating high gradient high intensity magnetic separator, abandon more than 95% strong magnetic tail ore deposit, the high intensity magnetic mineral obtaining is sent into one section of shaking table and is sorted, obtain respectively one section of table concentrate and one section of shaking table mine tailing, one section of table concentrate forms the first major product: WO 3grade 45.02%, productive rate 0.22%, the rate of recovery 70.71%; Abandoning more than 95% strong magnetic tail ore deposit sends into spiral chute and sorts; sort the chute concentrate obtaining and send into two sections of shaking tables and sort; obtain respectively two sections of table concentrates and two sections of shaking table mine tailings; will one section of shaking table mine tailing and two sections of table concentrates send in two sections of ball mills after merging and carry out ball milling; mog is-200 orders, 80%; two sections of ore pulps that obtain are sent into three sections of shaking tables and sorted, and obtains three sections of table concentrates and three sections of shaking table mine tailings, and three sections of table concentrates are product: WO for the second time 3grade 11.42%, productive rate 0.15%, the rate of recovery 12.21%; By the final tungsten concentrate index after the first major product and product merging for the second time, be: 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 obtaining, two sections of shaking table mine tailings and three sections of shaking table mine tailings.
The present invention be by greisen ore after thick broken, thin broken, ball milling, by the magnetic separation of SLon Verticle ring pulsating high gradient high intensity magnetic separator, obtain tungsten ore, then tungsten ore carries out one section of table concentration, obtains one section of table concentrate.And high intensity magnetic separation mine tailing carries out spiral chute and scans, chute concentrate carries out two sections of shaking tables again and sorts, will one section of shaking table mine tailing and two sections of table concentrates enter after two sections of ball millings after merging, then carry out three sections of shaking tables and sort, obtain three sections of table concentrates.
Main feature of the present invention is: break through traditional single gravity concentration technological process, adopt SLon Verticle ring pulsating high gradient high intensity magnetic separator to carry out magnetic separation, ore-dressing practice flow process is shortened, table of equipment tricks reduces, the strong magnetic of high gradient is roughly selected the operation recovery of tungsten more than 90%, roughly selects tungsten concentration ratio and reaches more than 20.By optimization, roughly select operating condition, process indicator is: tungsten concentrate grade 31.35%, concentrate yield 0.37%, tungsten overall recovery 82.92%.
Therefore, the present invention and traditional handicraft comparison, 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 new technology is laid a good foundation.
2, in flow process, a small amount of low-grade tungsten ore carries out regrinding and reconcentration, has saved ore grinding consumption, has reduced production cost, for extending the exploitation time limit of enterprise, has made contribution with the economic benefit that improves enterprise.
3, magnetic plant is selected 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 configured pulsing mechanism, the intergrowth containing tungsten mineral and tungstenic in greisen can be carried out to repeated screening, farthest give enrichment.
Because high gradient magnetic dressing process can abandon most of mine tailing, after gravity treatment flow process can greatly simplify, thereby table of equipment tricks is reduced, water-saving and electricity-saving, saves space, workable, can obviously reduce the financial cost that tungsten concentrate is produced.
4. traditional handicraft is difficult to the tungsten mineral in greisen ore deposit, quartz reef edge zone to reclaim, and owing to having used SLon pulsating high gradient magnetic separator with vertical ring, just makes this part tungsten mineral effectively be reclaimed.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Efficient separation is containing a method for weak magnetic impurity scheelite, and concrete steps are as follows:
A, fragmentation-screening stage: greisen ore is sent in jaw crusher and is slightly broken, then send into and in gyratory crusher, carry out thin broken, then with Belt Conveying to vibratory sieve, through screening, obtain the ore of all-2mm grade;
B, ore grinding-classification stage: the ore under sieve is sent in one section of ball mill and carried out ball milling, and mog is-200 orders, 35.4%;
C, magnetic separation stage: the one section of ore pulp obtaining after ore grinding is sent into SLon Verticle ring pulsating high gradient high intensity magnetic separator and 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 ore grade 3.67%, tungsten concentration ratio reaches more than 20, productive rate 3.66%, the sorting index of the rate of recovery 95.85%, for next step reselection operation is created good in ore deposit condition;
D, gravity treatment stage: after the High gradient high intensity magnetic separation operation of SLon Verticle ring pulsating high gradient high intensity magnetic separator, abandon more than 95% strong magnetic tail ore deposit, the high intensity magnetic mineral obtaining is sent into one section of shaking table and is sorted, obtain respectively one section of table concentrate and one section of shaking table mine tailing, one section of table concentrate forms the first major product: WO 3grade 45.02%, productive rate 0.22%, the rate of recovery 70.71%; Abandoning more than 95% strong magnetic tail ore deposit sends into spiral chute and sorts; sort the chute concentrate obtaining and send into two sections of shaking tables and sort; obtain respectively two sections of table concentrates and two sections of shaking table mine tailings; will one section of shaking table mine tailing and two sections of table concentrates send in two sections of ball mills after merging and carry out ball milling; mog is-200 orders, 80%; two sections of ore pulps that obtain are sent into three sections of shaking tables and sorted, and obtains three sections of table concentrates and three sections of shaking table mine tailings, and three sections of table concentrates are product: WO for the second time 3grade 11.42%, productive rate 0.15%, the rate of recovery 12.21%; By the final tungsten concentrate index after the first major product and product merging for the second time, be: 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 obtaining, two sections of shaking table mine tailings and three sections of shaking table mine tailings.
The present invention and traditional handicraft are in the index contrast of Inner Mongol Mu Qinqi tungsten ore, as shown in table 1.
From upper table, tungsten concentrate and traditional gravity separation technology comparison of with the present invention, producing, in the situation that original quality is identical, but the tungsten concentrate quality obtaining increases substantially, and 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 economic benefit that extends the exploitation time limit of enterprise and improve enterprise has been made contribution.

Claims (1)

1. efficient separation, containing a method for weak magnetic impurity scheelite, is characterized in that:
A, fragmentation-screening stage: greisen ore is sent in jaw crusher and is slightly broken, then send into and in gyratory crusher, carry out thin broken, then with Belt Conveying to vibratory sieve, through screening, obtain the ore of all-2mm grade;
B, ore grinding-classification stage: the ore under sieve is sent in one section of ball mill and carried out ball milling, and mog is-200 orders, 35.4%;
C, magnetic separation stage: the one section of ore pulp obtaining after ore grinding is sent into SLon Verticle ring pulsating high gradient high intensity magnetic separator and 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 lectromagnetism field >=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 ore grade 3.67%, tungsten concentration ratio reaches more than 20, productive rate 3.66%, the sorting index of the rate of recovery 95.85%, for next step reselection operation is created good in ore deposit condition;
D, gravity treatment stage: after the High gradient high intensity magnetic separation operation of SLon Verticle ring pulsating high gradient high intensity magnetic separator, abandon more than 95% strong magnetic tail ore deposit, the high intensity magnetic mineral obtaining is sent into one section of shaking table and is sorted, obtain respectively one section of table concentrate and one section of shaking table mine tailing, one section of table concentrate forms the first major product: WO 3grade 45.02%, productive rate 0.22%, the rate of recovery 70.71%; Abandoning more than 95% strong magnetic tail ore deposit sends into spiral chute and sorts; sort the chute concentrate obtaining and send into two sections of shaking tables and sort; obtain respectively two sections of table concentrates and two sections of shaking table mine tailings; will one section of shaking table mine tailing and two sections of table concentrates send in two sections of ball mills after merging and carry out ball milling; mog is-200 orders, 80%; two sections of ore pulps that obtain are sent into three sections of shaking tables and sorted, and obtains three sections of table concentrates and three sections of shaking table mine tailings, and three sections of table concentrates are product: WO for the second time 3grade 11.42%, productive rate 0.15%, the rate of recovery 12.21%; By the final tungsten concentrate index after the first major product and product merging for the second time, be: 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 obtaining, two sections of shaking table mine tailings and three sections of shaking table mine tailings.
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CN103301946B (en) * 2013-06-25 2014-12-31 湖南柿竹园有色金属有限责任公司 Grading and branching streaming flotation method of tungsten ore
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
CN104096627B (en) * 2014-07-15 2016-03-30 赣州金环磁选设备有限公司 The method of the black tungsten beneficiating efficiency of a kind of effective raising
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
CN105214849B (en) * 2015-11-02 2017-10-10 中南大学 A kind of beneficiation method for improving scheelite concentration process concentrate grade
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
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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RU2068739C1 (en) * 1990-10-11 1996-11-10 Офицеров Валентин Фаустович Method of extracting bismuth minerals from non-magnetic fraction produced when finishing rough tungsten concentrates
US5205414A (en) * 1991-06-17 1993-04-27 Edward Martinez Process for improving the concentration of non-magnetic high specific gravity minerals
CN101844105A (en) * 2009-03-27 2010-09-29 北京有色金属研究总院 Process for recovering black tungsten and white tungsten from tailing containing tungsten
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