Method for preparing molybdenum disulfide from molybdenite

A technology of molybdenum disulfide and molybdenite, applied in the direction of molybdenum sulfide, etc., can solve the problems of instability and poor quality of molybdenum disulfide, achieve the effects of shortening leaching time, convenient operation, and improving leaching efficiency

Inactive Publication Date: 2010-12-01
洛阳开拓者投资管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the problem that the purity of molybdenum disulfide produced by the existing natural method is only more than 98%, and the molybdenum disulfide prepared by the synthetic method is unstable and of poor quality, the present invention provides a method for preparing molybdenum disulfide from molybdenite, using microwave assisted Prepare molybdenum disulfide by multi-step leaching to ensure that molybdenum disulfide with a purity of more than 99.2% can be obtained, with excellent quality and stable performance

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  • Method for preparing molybdenum disulfide from molybdenite

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Embodiment 1

[0031] The first step microwave assisted hydrochloric acid leaching:

[0032] 1) First put 100kg of molybdenite powder into a hydrochloric acid leaching kettle with microwave-assisted heating, the concentration of hydrochloric acid is 30%, and the dosage is 100kg;

[0033] 2) Heating with microwaves, controlling the temperature of the liquid in the leaching kettle at 65°C, and the constant temperature time is 80min;

[0034] 3) Turn off the microwave, and separate the acid liquid from the powder.

[0035] The second step microwave assisted hydrofluoric acid leaching:

[0036] 1) Put the powder leached by microwave hydrochloric acid into a hydrofluoric acid leaching kettle with microwave-assisted heating, the concentration of hydrofluoric acid is 40%, and the dosage is 100kg;

[0037] 2) Heating by microwave, controlling the temperature of the liquid in the leaching tank at 85°C, and the constant temperature time is 110min;

[0038] 3) Turn off the microwave, and separate th...

Embodiment 2

[0045] The first step microwave assisted hydrochloric acid leaching:

[0046] 1) First put 100kg of molybdenite powder into a hydrochloric acid leaching kettle with microwave-assisted heating, the concentration of hydrochloric acid is 35%, and the consumption is 95kg;

[0047] 2) Heating by microwave, controlling the temperature of the liquid in the leaching tank at 75°C, and the constant temperature time is 40min;

[0048] 3) Turn off the microwave, and separate the acid liquid from the powder.

[0049] The second step microwave assisted hydrofluoric acid leaching:

[0050] 1) Put the powder leached by microwave hydrochloric acid into a hydrofluoric acid leaching kettle with microwave-assisted heating, the concentration of hydrofluoric acid is 60%, and the dosage is 95kg;

[0051] 2) Heating by microwave, the temperature of the liquid in the leaching tank is controlled at 80°C, and the constant temperature time is 90min;

[0052] 3) Turn off the microwave, and separate the...

Embodiment 3

[0059] The first step microwave assisted hydrochloric acid leaching:

[0060] 1) First put 100kg of molybdenite powder into a hydrochloric acid leaching kettle with microwave-assisted heating, the concentration of hydrochloric acid is 25%, and the dosage is 60kg;

[0061] 2) Heating by microwave, controlling the temperature of the liquid in the leaching tank at 70°C, and the constant temperature time is 100min;

[0062] 3) Turn off the microwave, and separate the acid liquid from the powder.

[0063] The second step microwave assisted hydrofluoric acid leaching:

[0064] 1) Put the powder leached by microwave hydrochloric acid into a hydrofluoric acid leaching kettle with microwave-assisted heating, the concentration of hydrofluoric acid is 90%, and the dosage is 60 kg;

[0065] 2) Heating with microwaves, controlling the temperature of the liquid in the leaching kettle at 75°C, and the constant temperature time is 45min;

[0066] 3) Turn off the microwave, and separate the...

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Abstract

The invention provides a method for preparing molybdenum disulfide from molybdenite. The polybdenum disulfide is prepared by microwave assisted multi-stage leaching, and the molybdenum disulfide with the purity of over 99.2 percent, excellent quality and stable performance can be obtained. By adopting the polybdenite by using microwave assisted leaching, the method for preparing the molybdenum disulfide from the molybdenite comprises the following four steps of: 1, hydrochloric acid leaching by using microwaves; 2, hydrofluoric acid leaching by using microwaves; 3, chloride leaching by using microwaves; and 4, cleaning the powder with deionized water, drying the powder to obtain the polybdenum disulfide powder with the purity of over 99.2 percent. The method has the advantages of simple method and convenient operation, improvement on the working efficiency, and simultaneously improvement on the product quality and market competitive power.

Description

technical field [0001] The invention relates to a method for preparing molybdenum disulfide, in particular to a method for preparing molybdenum disulfide with molybdenite. Background technique [0002] Molybdenum disulfide is a high-purity solid lubricant with excellent high temperature resistance, compression resistance and stable chemical properties. It is widely used in aerospace, aviation, chemical industry, metallurgy and other industries. [0003] The preparation process of molybdenum disulfide can be divided into two types: natural method and synthetic method. The natural method is to further purify the high-quality molybdenite concentrate, and use a leaching agent to leach the metal and non-metallic impurities in the molybdenum concentrate. [0004] The main component of molybdenite concentrate is molybdenum disulfide, and its content is 80% to 90%. The natural method to produce molybdenum disulfide is to use high-quality molybdenum concentrate as raw material, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06
Inventor 赵维保赵维根郭培民范家富
Owner 洛阳开拓者投资管理有限公司
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