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Method for separating bright molybdenum and brass in refractory molybdenum copper sulphide ore

A technology for sulfide ore and brass, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of increasing processing consumption, affecting the environment, affecting the recovery rate of brass, etc., to reduce the consumption of chemicals, reduce The effect of environmental pollution

Inactive Publication Date: 2012-12-19
北京华夏建龙矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Separation of molybdenite and brass requires the addition of a large amount of inhibitors. The conventional method is to inhibit brass. In water-deficient areas, inhibitors enter the overall process through the water system, which affects the recovery rate of brass and molybdenum in the entire system. The wastewater at the site is treated separately, which affects the environment and increases treatment consumption
[0006] Through the above background technology, it can be found that no matter what kind of flotation method is used, there are great disadvantages, but no relevant research has been carried out on the new mineral processing method, and it is still in a blank state in China

Method used

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  • Method for separating bright molybdenum and brass in refractory molybdenum copper sulphide ore
  • Method for separating bright molybdenum and brass in refractory molybdenum copper sulphide ore
  • Method for separating bright molybdenum and brass in refractory molybdenum copper sulphide ore

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Embodiment 1

[0024] Embodiment 1: A method for separating molybdenite and brass from refractory molybdenite and chalcopyrite: refractory molybdenite and chalcopyrite, the most minerals in the ore are pyrite, followed by molybdenum Mineral ore, the rest are chalcopyrite, etc., trace amounts are rhenium, silver, gold ore, the grade of molybdenum is 0.08%, and the grade of copper is 0.04%. Molybdenum, copper, and rhenium can be recycled comprehensively. The conditions of different places are different, and the corresponding various minerals The content varies greatly. The purpose of this embodiment is to separate molybdenite and brass from refractory molybdenite and chalcopyrite. Among them, classification, gravity separation, regrinding and flotation process are the key steps to separate molybdenite and chalcopyrite.

[0025] The ores used in this embodiment were molybdenite and chalcopyrite ores produced by Jindi Molybdenum Industry Co., Ltd., Abaga Banner, Inner Mongolia.

[0026] Table ...

Embodiment 2

[0038] Embodiment 2: the impact of re-election times on the rate of recovery

[0039] The function of gravity separation is mainly to separate qualified molybdenite powder and qualified chalcopyrite powder. Using the same beneficiation process as in Example 1, the results are shown in Table 3 by adjusting the impact of re-election times on the recovery rate. It can be seen that the recovery rate of copper increases with the increase of re-election times, but the recovery rate of molybdenum decreases; and after the third time, the recovery rate of copper has tended to be stable. Three times of re-election can realize the purpose of separating molybdenite and brass from refractory molybdenite and chalcopyrite in the present invention.

[0040] The impact of table 3 re-election times on molybdenum, copper recovery (molybdenum, copper separation stage)

[0041] Magnetic separation times (%)

[0042] Remarks: Molybdenum and copper flotation separation stage indicators a...

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Abstract

The invention discloses a method for separating bright molybdenum and brass in refractory molybdenum copper sulphide ore. According to the method, primordial bright molybdenum and brass ore are used as raw materials and are subject to general floatation after being crushed and ground, thereby enriching bright molybdenum and brass; the bright molybdenum and brass are subject to thickness grading in order to separate out coarse and fine products, the coarse particle portion and the fine particle portion are respectively subject to table re-separation in order to separate bright molybdenum and brass, thereby obtaining the qualified bright molybdenum and brass ore concentrate, mixed intermediate ore of bright molybdenum ore and brass ore, and qualified brass ore; the mixed intermediate ore is returned back to the re-grinding technique and introduced into the circulating system, thereby realizing the separation of the refractory bright molybdenum and brass. The technique has the following advantages that the disadvantages of greatly increased cost caused by the addition of a large amount of inhibitors in the common separation of bright molybdenum and brass for inhibiting the brass ore and the removing of the regents when brass is recovered from the tailings, in particular the disadvantages of the reduction of recovering ratio of the bright molybdenum particularly the brass when a large amount of brass ore inhibitors are existent in the water system, and the environmental impact due to the need of reagents in the common floating separation, are avoided.

Description

technical field [0001] The invention relates to a method for separating molybdenum and brass in refractory molybdenum-copper sulfide ore, in particular a method for separating through classification, gravity separation and regrinding flotation processes, which belongs to the technical field of mineral processing. Background technique [0002] 80% of molybdenum is used in steel, with an average of 0.014-0.016% of steel output. Molybdenum is added to the steel to make the steel have a uniform microcrystalline structure, reduce the eutectoid decomposition temperature of the steel, and expand the stable range of quenching and annealing of the steel. Adding molybdenum to steel can improve its elasticity, wear resistance and impact resistance. Another characteristic of molybdenum in steel is that it can eliminate the brittleness that occurs when nickel-chromium steel is annealed. Therefore, molybdenum is widely used in the manufacture of high-strength low-alloy steel, steel pipe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/00B03B1/00
Inventor 孙建喜苑占永解书谦张文华叶枝玖丛革臣栾泽学窦巧娥孙宇才照江
Owner 北京华夏建龙矿业科技有限公司
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