A beneficiation and enrichment method suitable for associated scheelite in molybdenite flotation tailings

A technology for flotation tailings and scheelite, applied in chemical instruments and methods, wet separation, recycling technology, etc., can solve the problems of poor flotation effect, low recovery rate and low grade of scheelite, and achieve Increase the degree of dissociation of monomers, increase the total recovery rate, and improve the effect of gravity separation recovery rate

Inactive Publication Date: 2018-05-25
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The test results show that the flotation effect of scheelite is very poor; 3 The scheelite concentrate with a grade of 2.48% has a low recovery rate of only 28.61%; the recovery rate of magnetic separation is very high and can effectively remove 66.73% of the magnetic tailings, but the concentrate WO 3 lower grade

Method used

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  • A beneficiation and enrichment method suitable for associated scheelite in molybdenite flotation tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Sulfide ore flotation tailings contain WO 3 The grade is 0.082%, and the strong magnetic minerals are removed through the magnetic separation of drum-shaped wet weak magnetic separator (field strength 1000Oe), and the weak magnetic minerals, strong magnetic minerals and weak magnetic Minerals are merged into magnetic tailings with a yield of 66.73%, WO 3 The grade is 0.023%; the yield of the remaining non-magnetic minerals is 33.27%, WO 3 Grade 0.20%, WO 3 The operating recovery rate is 81.26%, and scheelite is pre-enriched in non-magnetic minerals.

[0060] Sieve and classify the non-magnetic minerals into three grades of +0.074mm, -0.074mm+0.045mm, -0.045mm, and carry out shaking table gravity separation respectively to obtain concentrate, medium ore and tailings respectively; the medium ore is shaken again Bed gravity separation, divided into concentrate, middle ore and tailings. The concentrate, medium ore and tailings selected by each particle size are combined...

Embodiment 2

[0062] The sulfide ore flotation tailings are subjected to the same magnetic separation operation as in Example 1, and the obtained strong magnetic minerals and weak magnetic minerals are combined into magnetic tailings, with a yield of 66.73%, WO 3 The grade is 0.023%; the yield of the remaining non-magnetic minerals is 33.27%, WO 3 Grade 0.20%, WO 3 The job recovery rate is 81.26%.

[0063] Sieve and classify non-magnetic minerals into four grades of +0.15mm, -0.15mm+0.074mm, -0.074mm+0.045mm, -0.045mm, and carry out shaker gravity separation respectively to obtain concentrate, medium ore and tailings ore; the middle ore of the first shaking table is re-selected by the second shaking table, and is also divided into concentrate, middle ore and tailings. The concentrates, middlings and tailings selected from each particle size are combined separately to obtain concentrate products 1, 2, 3, 4 and tailings 1, 2, 3, 4 of different particle sizes.

[0064] Merge three parts of ...

Embodiment 3

[0069] The sulfide ore flotation tailings are subjected to the same magnetic separation operation as in Example 1, and the obtained strong magnetic minerals and weak magnetic minerals are combined into magnetic tailings, with a yield of 66.73%, WO 3 The grade is 0.023%; the yield of the remaining non-magnetic minerals is 33.27%, WO 3 Grade 0.20%, WO 3 The job recovery rate is 81.26%.

[0070] Sieve and classify non-magnetic minerals into four grades of +0.15mm, -0.15mm+0.074mm, -0.074mm+0.045mm, -0.045mm, and carry out shaker gravity separation respectively to obtain concentrate, medium ore and tailings ore; the middle ore of the first shaking table is re-selected by the second shaking table, and is also divided into concentrate, middle ore and tailings. The concentrated ore, medium ore and tailings selected from each particle size are respectively combined to obtain concentrate products 1, 2, 3, 4 and tailings 1, 2, 3, 4 of different particle sizes.

[0071] The tailings 4...

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Abstract

The invention provides a method for beneficiation and enrichment of associated scheelite in molybdenite flotation tailings, the method includes: a, weak magnetic separation and strong magnetic separation, b, non-magnetic pulp material particle size classification, c , re-election, d, medium ore regrinding e, re-classification and re-election and other steps to obtain high-grade and high-recovery scheelite concentrate products, so that the associated low-grade scheelite in copper-molybdenum polymetallic mixed paragenetic ore Resources are effectively recycled and utilized. The method of the invention can be widely applied to the field of recycling and utilization of associated low-grade scheelite resources.

Description

technical field [0001] The invention relates to the technical field of beneficiation and enrichment technology, in particular to an ore beneficiation and enrichment method suitable for associated scheelite in molybdenite flotation tailings. Background technique [0002] my country is the world's largest tungsten resource country and the world's largest tungsten producer. The development of tungsten ore resources has maintained a dominant position in the world for a long time. The important minerals of tungsten are tungstates. Although more than 20 kinds of tungsten minerals and tungsten-containing minerals have been discovered, among them, only wolframite and scheelite are of economic value. With the gradual depletion of wolframite resources, scheelite resources are particularly important. Scheelite deposits are often accompanied by sulfide ores, among which molybdenite is particularly common. In the beneficiation method of scheelite, the sulfide ore is generally floated f...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B03B9/06B03B7/00
CPCB03B7/00B03B9/06Y02W30/52
Inventor杨进忠严伟平陈晓青毛益林王秀芬
OwnerINST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI