Mineral separation and enrichment method for molybdenum oxide ores

A molybdenum oxide and enrichment technology is applied in the direction of solid separation, recycling technology, mechanical material recovery, etc. It can solve the problems of poor buoyancy, low recovery rate, and more molybdenum loss, so as to reduce the grade, reduce the amount of addition, The effect of reducing the pressure of environmental pollution

Inactive Publication Date: 2016-03-09
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

Molybdenum oxide ore with high oxidation rate is treated by flotation process. Due to the fine particle size of molybdenum oxide minerals and poor floatability, the recovery rate is often low, and the loss of molybdenum in the tailings is more. Further high-efficiency recovery process solutions need to be developed.

Method used

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  • Mineral separation and enrichment method for molybdenum oxide ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The molybdenum grade of sulfide ore flotation tailings is 0.066%, and the strong magnetic minerals are removed by drum-shaped wet weak magnetic separator (field strength 1400Oe), and the weak magnetic minerals are selected by high-gradient pulsating strong magnetic separator (field strength 11000Oe) , The yield of strong magnetic minerals is 0.86%, the grade of molybdenum is 0.014%, the yield of weak magnetic minerals is 66.58%, the grade of molybdenum is 0.018%, the total yield of magnetic mineral tailings is 67.44%, the grade of molybdenum is 0.018%, and the yield of the remaining non-magnetic minerals is 32.56% , molybdenum grade 0.17%, molybdenum magnetic separation recovery rate 82.01%, molybdenum minerals are preliminarily enriched in non-magnetic minerals.

[0043] The non-magnetic minerals obtained by the magnetic separation process are used as the ore, and the concentration of the pulp is adjusted to 6-10%. The recovery rate of the operation is 61.90%; the pulp...

Embodiment 2

[0046] The sulfide ore flotation tailings were subjected to the same weak magnetic separation and strong magnetic separation operations as in Example 1 to obtain magnetic mineral tailings with a yield of 67.44% and a molybdenum grade of 0.018%, and a yield of 32.56% with a molybdenum grade of 0.17% and a molybdenum grade of 0.17%. Non-magnetic minerals with a recovery rate of 82.01%.

[0047] The non-magnetic minerals obtained by the weak magnetic separation and strong magnetic separation process are used as the ore, and the concentration of the slurry is adjusted to 10-12%. , The operating recovery rate of molybdenum is 62.88%; the pulp after desliming is in a 3L flotation machine, the concentration of the pulp is adjusted to 12-20%, and the pH is adjusted to 8.0 with soda ash, and 40g / t and 20g / t are added respectively t of benzohydroxamic acid and 20g / t and 10g / t of terpineol oil are used as collectors and foaming agents. After two rough separations, flotation molybdenum wi...

Embodiment 3

[0050] The sulfide ore flotation tailings were subjected to the same weak magnetic separation and strong magnetic separation operations as in Example 1 to obtain magnetic mineral tailings with a yield of 67.44% and a molybdenum grade of 0.018%, and a yield of 32.56% with a molybdenum grade of 0.17% and a molybdenum grade of 0.17%. Non-magnetic minerals with a recovery rate of 82.01%.

[0051] Use the non-magnetic minerals obtained by the weak magnetic separation and strong magnetic separation process as the ore feed, adjust the pulp concentration to 12-20% in the 3L flotation machine, and use the water glass with an amount of 500g / t to the ore as the slime dispersant , soda ash as a regulator to adjust the pH to 8.0, 50g / t, 25g / t of benzohydroxamic acid and 20g / t, 10g / t of methyl isobutyl carbinol (MIBC) were added as collectors and Foaming agent, after two rough separations, the flotation molybdenum medium ore with a yield of 9.81% and a molybdenum grade of 0.33% was obtained...

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Abstract

The invention provides a mineral separation and enrichment method for molybdenum oxide ores. The method includes the several steps of low intensity magnetic separation and high intensity magnetic separation for sulphide ore flotation tailing ore pulp, non-magnetic ore pulp material desliming, flotation and the like, and finally molybdenum middlings with high grade are obtained. The molybdenum middlings can serve as raw materials for extraction of ammonium molybdate products through hydrometallurgy, and low-grade hard-to-separate molybdenum oxide ore resources in copper and molybdenum polymetallic mixed associated ores are effectively and comprehensively recycled. The mineral separation and enrichment method for the molybdenum oxide ores can be widely applied to the field of recycling of the low-grade hard-to-separate molybdenum oxide ore resources in similar tailings.

Description

technical field [0001] The invention relates to the technical field of beneficiation and enrichment technology, in particular to a method for beneficiation and enrichment of molybdenum oxide ore. Background technique [0002] China is rich in molybdenum resources, ranking first in the world. In terms of ore types, among the proven molybdenum ore reserves in my country, molybdenum sulfide ore is the main one, accounting for about 99% of the total reserves of molybdenum ore, while molybdenum oxide ore, mixed molybdenum ore and molybdenum ore of unknown type It only accounts for 1% of the total reserves in the country. The particles of molybdenite in molybdenum sulfide ore are often relatively coarse, with good natural buoyancy, and are easy to be recycled by flotation; while molybdenum oxide ore with an oxidation rate greater than 30% and mixed molybdenum ore with an oxidation rate of 10-30%, because of The molybdenum oxide minerals have complex occurrence and distribution st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/06
CPCB03B9/06Y02W30/52
Inventor 杨进忠毛益林陈晓青严伟平王秀芬
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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