A clean production process for recovering molybdenum-rhenium from ion adsorption type molybdenum-rhenium ore

An ion-adsorption type, clean production technology, applied in the direction of improving process efficiency, etc., can solve the problems of unsuitable treatment of ion-adsorption molybdenum-rhenium ore, high safety requirements, and lack of treatment methods, so as to save long-distance transportation The effect of cost, environmental friendliness, and process is simple and easy to control

Active Publication Date: 2022-08-02
北京地科绿色资源科技有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

For ion-adsorption molybdenum-rhenium ore, molybdenum and rhenium exist in the form of ion adsorption, and the pressurized oxidation method can ensure a high recovery rate of molybdenum and rhenium, but this process is carried out under high temperature and high pressure conditions, which requires relatively high production safety. At the same time, the reagents used are highly corrosive and need to be produced in special high-temperature, high-pressure, and corrosion-resistant equipment, and the production cost is relatively high. Therefore, the pressurized oxidation method is not suitable for the treatment of ion-adsorbed molybdenum-rhenium ore
[0010] In summary, as a new type of molybdenum-rhenium ore, there is currently a lack of a technical, economical and reasonable treatment method

Method used

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  • A clean production process for recovering molybdenum-rhenium from ion adsorption type molybdenum-rhenium ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A process for recovering molybdenum-rhenium from ion adsorption type molybdenum-rhenium ore, comprising the following steps:

[0037] (1) after ion adsorption type molybdenum-rhenium ore is ground to particle size less than 0.12mm in vibration mill, get 2kg and join in the reactor;

[0038](2) add 10L of tap water to the reactor with 3 baffles, add 1.5kg of sodium hydroxide simultaneously, be heated to 60 DEG C and carry out leaching for the first time, the leaching time is 2h, and the rotational speed of the axial flow paddle is 80rpm, After the reaction, vacuum filtration was used to separate solid-liquid, and the concentration of rhenium in the obtained primary leaching solution was 2.09 mg / L, and the concentration of molybdenum was 92.91 mg / L.

[0039] (3) the ion adsorption type molybdenum-rhenium ore processed in step (2) is continued to be added into the reactor, and 6L tap water, 900g sodium hydroxide, 80g hydrogen peroxide, 240g ammonium sulfate are added simul...

Embodiment 2

[0041] A process for recovering molybdenum-rhenium from ion adsorption type molybdenum-rhenium ore, comprising the following steps:

[0042] (1) after ion adsorption type molybdenum-rhenium ore is ground to particle size less than 0.12mm in vibration mill, get 2kg and join in the reactor;

[0043] (2) in the reactor with 3 baffle plates, add 10L tap water, add the potassium hydroxide of 1.5kg simultaneously, be heated to 60 ℃ and carry out leaching for the first time, the leaching time is 2h, and the rotational speed of the axial flow paddle is 80rpm, After the reaction, the solid-liquid separation was carried out by vacuum filtration, and the rhenium concentration in the obtained primary leaching solution was 2.06 mg / L, and the molybdenum concentration was 86.34 mg / L;

[0044] (3) the ion adsorption type molybdenum-rhenium ore processed in step (2) continues to be added to the reactor, and 6L tap water, 900g potassium hydroxide, 240g potassium permanganate, 100g sodium chlori...

Embodiment 3

[0046] A process for recovering molybdenum-rhenium from ion adsorption type molybdenum-rhenium ore, comprising the following steps:

[0047] (1) after ion adsorption type molybdenum-rhenium ore is ground to particle size less than 0.12mm in vibration mill, get 2kg and join in the reactor;

[0048] (2) add 10L of tap water to the reactor with 3 baffles, add 1.5kg of sodium hydroxide simultaneously, be heated to 60 DEG C and carry out leaching for the first time, the leaching time is 2h, and the rotational speed of the axial flow paddle is 80rpm, After the reaction, vacuum filtration was performed to separate solid-liquid, and the concentration of rhenium in the obtained primary leaching solution was 2.18 mg / L, and the concentration of molybdenum was 97.41 mg / L.

[0049] (3) the ion adsorption type molybdenum-rhenium ore processed in step (2) is continued to be added to the reactor, and 6L tap water, 900g of sodium hydroxide, 100g of hydrogen peroxide, 360g of ammonium sulfate a...

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Abstract

The invention relates to a clean production process for recovering molybdenum-rhenium from ion-adsorption type molybdenum-rhenium ore. The ore is leached for the first time, and then the mixed solution of the leaching agent and the leaching aid is used for the second leaching of the ion-adsorbed molybdenum-rhenium ore. Finally, the molybdenum and rhenium in the leaching solution are mixed and recovered. In the present invention, a leaching agent solution is used for the first leaching so that molybdenum ions and rhenium ions that are easy to be recovered in the ore are leached into the solution, and a mixed solution of a leaching agent and a leaching aid is used in the second leaching to make the molybdenum ions and rhenium ions that are difficult to recover in the ore leached. The rhenium ions are leached into the solution, thereby increasing the leaching rate of molybdenum and rhenium, while reducing the amount of leaching agent and leaching aid. The method has the characteristics of low cost, good environmental protection and simple process. In this process, the recovery rate of rhenium is greater than 70%, and the recovery rate of molybdenum is greater than 80%.

Description

technical field [0001] The invention relates to a clean production process for recovering molybdenum-rhenium from ion adsorption type molybdenum-rhenium ore, and belongs to the field of comprehensive utilization of mineral resources. Background technique [0002] Molybdenum and rhenium are both important strategic resources. Molybdenum is widely used in iron and steel industry, non-ferrous metallurgy, petrochemical industry and other fields due to its high melting point, high strength and corrosion resistance. Among them, the consumption of molybdenum in the iron and steel industry accounts for about 50% of the total consumption of molybdenum. 70% to 80% of the amount of rhenium used in the manufacture of various structural alloy steels, stainless steels, tool steels and high-speed steels; rhenium has excellent creep resistance and catalytic properties, and is widely used in aerospace, petrochemical and other fields. About 80% of rhenium is used to make single crystal blades...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/34C22B61/00C22B3/24
CPCC22B34/34C22B61/00C22B3/24Y02P10/20
Inventor 张博李占元杨光柳林
Owner 北京地科绿色资源科技有限公司
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