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Method for purifying molybdenum disulfide by ultrasonic-assisted acid leaching of molybdenite

A molybdenum disulfide and molybdenite technology, which is applied in the direction of improving process efficiency, can solve the problems of large consumption of acid solution, high production cost, low production efficiency, etc., and achieves low acid leaching temperature, low production cost, and high production efficiency. Efficient effect

Active Publication Date: 2013-10-16
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common disadvantages of the current process are: the first stage of acid leaching process and the second stage of acid leaching process have high acid leaching temperature, long acid leaching time, and large consumption of acid solution, resulting in low production efficiency, high production cost, and long production cycle. Long, and the molybdenum disulfide product purified by the current process has a Fe content ≥ 0.15%, an acid value ≥ 1.0, and a Mo content ≤ 59%. There is still a large gap between the product quality and the international level

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The method for purifying molybdenum disulfide by ultrasonic-assisted acid leaching molybdenite of the present embodiment comprises the following steps:

[0023] Step 1, placing molybdenite with a mass percentage of 57% of Mo and 0.4% of Fe after beneficiation in a ball mill for ball milling and crushing, and obtaining molybdenite powder after passing through a 200-mesh sieve;

[0024] Step 2. Immerse the molybdenite powder described in step 1 in the first section of acid leaching solution with a temperature of 35°C, and at the same time use the ultrasonic probe placed in the first section of acid leaching solution to perform ultrasonic oscillation to keep the molybdenite The mass ratio of the powder to the first stage of acid leaching solution is 0.8:1, and the power of ultrasonic oscillation is kept at 400W. After 45 minutes of acid leaching, the ultrasonic probe is taken out, and the first stage of acid leaching solution is suction filtered to remove the molybdenite po...

Embodiment 2

[0029] The method for purifying molybdenum disulfide by ultrasonic-assisted acid leaching molybdenite of the present embodiment comprises the following steps:

[0030] Step 1, placing molybdenite with a mass percentage of 56.8% of Mo and 0.4% of Fe after beneficiation in a ball mill for ball milling and crushing, and passing through a 200-mesh sieve to obtain molybdenite powder;

[0031] Step 2. Immerse the molybdenite powder described in step 1 in the first section of acid leaching solution with a temperature of 30°C. At the same time, use the ultrasonic probe placed in the first section of acid leaching solution to perform ultrasonic oscillation to keep the molybdenite The mass ratio of the powder to the first stage of acid leaching solution is 1:1, and the power of ultrasonic oscillation is maintained at 600W. After 60 minutes of acid leaching, the ultrasonic probe is taken out, and the first stage of acid leaching solution is removed by suction filtration, and the molybdeni...

Embodiment 3

[0036] The method for purifying molybdenum disulfide by ultrasonic-assisted acid leaching molybdenite of the present embodiment comprises the following steps:

[0037] Step 1, placing molybdenite with a mass percentage of 56.0% Mo and 0.3% Fe in a ball mill for ball milling and crushing, and passing through a 200-mesh sieve to obtain molybdenite powder;

[0038] Step 2. Immerse the molybdenite powder described in step 1 in the first section of acid leaching solution with a temperature of 25°C. At the same time, use the ultrasonic probe placed in the first section of acid leaching solution to perform ultrasonic oscillation to keep the molybdenite The mass ratio of the powder to the first stage of acid leaching solution is 0.8:1, and the power of ultrasonic oscillation is maintained at 600W. After 90 minutes of acid leaching, the ultrasonic probe is taken out, and the first stage of acid leaching solution is removed by suction filtration, and the molybdenite powder The body is r...

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Abstract

The invention provides a method for purifying molybdenum disulfide by ultrasonic-assisted acid leaching of molybdenite. The method comprises the following steps of: 1. after mineral separation, carrying out ball-milling on the molybdenite for grinding; 2. soaking the ground molybdenite into first-stage pickle liquor for first-stage acid leaching reaction, and simultaneously carrying out ultrasonic high frequency oscillation by an ultrasonic probe arranged in the first-stage pickle liquor; 3. soaking the product into second-stage pickle liquor for second-stage acid leaching reaction; and 4. drying to obtain the molybdenum disulfide product. The method is high in production efficiency, low in production cost, short in production period and suitable for large scale industrial production; and by combining a double-acid-leaching technology with an ultrasonic-assisted technology, molybdenum disulfide with high content of Mo and low content of Fe can be obtained under the conditions of low acid leaching temperature, short acid leaching time and low pickle liquor consumption, thus the method has beneficial social and economic values.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and in particular relates to a method for purifying molybdenum disulfide by ultrasonic-assisted acid leaching molybdenite. Background technique [0002] Molybdenum disulfide is widely used in automobiles, electronic appliances, aerospace and other fields due to its good high temperature resistance, pressure resistance and chemical stability. In particular, molybdenum disulfide has excellent lubricating properties and is known as the "king of advanced solid lubricating oil". It can effectively reduce mechanical wear, prolong the service life of friction equipment, reduce the loss of equipment parts, and significantly improve the working efficiency of equipment. and working accuracy, greatly prolonging the maintenance cycle of equipment and promoting industrial production. Therefore, molybdenum disulfide has very broad application prospects. [0003] In the current industrial production, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/06C22B34/34
CPCY02P10/20
Inventor 王仙琴周新文孙院军罗建海王磊郭坤
Owner JINDUICHENG MOLYBDENUM CO LTD