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Mineral separation and enrichment method suitable for associated scheelite in molybdenite floatation tailings

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

Inactive Publication Date: 2016-02-10
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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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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  • Mineral separation and enrichment method suitable for associated scheelite in molybdenite floatation 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 mineral separation and enrichment method suitable for associated scheelite in molybdenite floatation tailings. The method includes the steps of low-intensity magnetic separation, high-intensity magnetic separation, non-magnetic ore pulp material size fraction grading, gravity separation, middling regrinding, regrading gravity separation and the like. A high-grade and high-recovery scheelite concentrate product is obtained, the associated low-grade scheelite resource in Cu-Mo polymetallic mixed associated ore is effectively and comprehensively recovered and used. The method can be widely applied to the field of recovering and using the associated low-grade scheelite resource.

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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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
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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