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Clean production process for recycling molybdenum and rhenium from ion adsorption type molybdenum-rhenium ore

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

Active Publication Date: 2021-05-28
北京地科绿色资源科技有限公司
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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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  • Clean production process for recycling molybdenum and rhenium from ion adsorption type molybdenum-rhenium ore

Examples

Experimental program
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Effect test

Embodiment 1

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

[0037] (1) Grind the ion-adsorption molybdenum-rhenium ore in a vibration mill to a particle size of less than 0.12 mm, then add 2 kg to the reactor;

[0038](2) Add 10L of tap water to the reaction kettle with 3 baffles, add 1.5kg of sodium hydroxide at the same time, heat to 60°C for the first leaching, the leaching time is 2h, and the rotational speed of the axial flow paddle is 80rpm, After the reaction, vacuum filtration was carried out for solid-liquid separation, and the rhenium concentration in the obtained primary leaching solution was 2.09 mg / L, and the molybdenum concentration was 92.91 mg / L.

[0039] (3) Continue to add the ion-adsorbed molybdenum-rhenium ore treated in step (2) into the reaction kettle, add 6L tap water, 900g of sodium hydroxide, 80g of hydrogen peroxide, and 240g of ammonium sulfate at the same time, and heat to 60...

Embodiment 2

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

[0042] (1) Grind the ion-adsorption molybdenum-rhenium ore in a vibration mill to a particle size of less than 0.12 mm, then add 2 kg to the reactor;

[0043] (2) Add 10L of tap water to the reaction kettle with 3 baffles, add 1.5kg of potassium hydroxide at the same time, heat to 60°C for the first leaching, 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 leachate was 2.06mg / L, and the molybdenum concentration was 86.34mg / L;

[0044] (3) continue to add the ion-adsorption type molybdenum-rhenium ore after step (2) processing in the reactor, add the potassium hydroxide of 6L tap water, 900g, the potassium permanganate of 240g, the sodium chloride of 100g simultaneously, b...

Embodiment 3

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

[0047] (1) Grind the ion-adsorption molybdenum-rhenium ore in a vibration mill to a particle size of less than 0.12 mm, then add 2 kg to the reactor;

[0048] (2) Add 10L of tap water to the reaction kettle with 3 baffles, add 1.5kg of sodium hydroxide at the same time, heat to 60°C for the first leaching, 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 2.18 mg / L, and the molybdenum concentration was 97.41 mg / L.

[0049] (3) Continue to add the ion-adsorbed molybdenum-rhenium ore treated in step (2) into the reactor, add 6L tap water, 900g of sodium hydroxide, 100g of hydrogen peroxide, and 360g of ammonium sulfate at the same time, and heat to 60°C ...

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Abstract

The invention relates to a clean production process for recycling molybdenum and rhenium from ion adsorption type molybdenum-rhenium ore. The process comprises the following steps that after being crushed, the ion adsorption type molybdenum-rhenium ore is added into a reaction kettle, the ion adsorption type molybdenum-rhenium ore is leached for the first time by adopting a leaching agent solution, then the ion adsorption type molybdenum-rhenium ore is leaked for the second time by adopting a mixed solution of a leaching agent and an auxiliary leaching agent, and finally after lixivium obtained in the two times is mixed, molybdenum and rhenium in the lixivium are recycled. According to the process, the leaching agent solution is adopted in the first time of leaching to enable molybdenum ions and rhenium ions which are easy to recycle in the ore to be leached into the solution, the mixed solution of the leaching agent and the auxiliary leaching agent is adopted in the second time of leaching to enable molybdenum ions and rhenium ions which are difficult to recycle in the ore to be leached into the solution, and therefore the leaching rate of molybdenum and rhenium is increased, and meanwhile the use quantity of the leaching agent and the auxiliary leaching agent is reduced. The method has the characteristics of being low in cost, good in environmental protection property and simple in process. In the process, the rhenium recycling rate is larger than 70%, and the molybdenum recycling rate is larger 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, which belongs to the field of comprehensive utilization of mineral resources. Background technique [0002] Both molybdenum and rhenium are important strategic resources. Because of its high melting point, high strength, and corrosion resistance, molybdenum is widely used in iron and steel industry, nonferrous metallurgy, petrochemical and other fields. The molybdenum consumed by the iron and steel industry accounts for about 10% of the total consumption of molybdenum. 70% to 80% of the total amount is used to manufacture 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, among which About 80% of rhenium is used to make aero-engine single crystal blades, and...

Claims

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Application Information

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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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