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A method of recycling marks from uranium mines

An in-situ leaching and trace technology, applied in the field of hydrometallurgy, can solve the problems of low rhenium concentration, rhenium cannot be effectively recovered, waste of rhenium resources, etc., and achieves low consumption, obvious social and economic benefits, and environmentally friendly effects.

Active Publication Date: 2022-08-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On the whole, for in-situ leaching uranium-containing uranium ores, due to the low concentration of rhenium in the obtained leaching solution (<1.0mg / L), there is currently no effective recovery method, resulting in the low-concentration rhenium in some in-situ leaching uranium mines in my country. be effectively recovered, resulting in a large waste of rhenium resources

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  • A method of recycling marks from uranium mines
  • A method of recycling marks from uranium mines
  • A method of recycling marks from uranium mines

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Embodiment 1

[0060] The present embodiment provides a method for recovering trace amounts of rhenium from a uranium mine in-situ leaching solution, comprising the following steps:

[0061] (1) Pretreatment: filter the adsorption tail liquid containing trace amount of rhenium (rhenium content less than 1ppm) after uranium adsorption, and then pass through 732 cation exchange resin, and collect the adsorption tail liquid after passing through the column.

[0062] (2) Adsorption: using the graphene resin functional ion exchange resin as the adsorbent, the adsorption tail liquid after pretreatment in step (1) is subjected to a column adsorption process.

[0063] (3) Desorption: desorb the rhenium-loaded saturated resin obtained by adsorption in step (2), the desorbent is 7wt% de-rhenium scavenger solution, the desorption volume is 3BV, and the de-rhenium scavenger (desorption solution) that has passed through the column is collected , then add an equal volume of ammonia water, stir and contact...

Embodiment 2

[0072] The present embodiment provides a method for recovering trace amounts of rhenium from a uranium mine in-situ leaching solution, comprising the following steps:

[0073] (1) Pretreatment: filter the adsorption tail liquid containing trace amount of rhenium (rhenium content less than 1ppm) after uranium adsorption, and then pass through 732 cation exchange resin, and collect the adsorption tail liquid after passing through the column.

[0074] (2) Adsorption: using the graphene resin functional ion exchange resin as the adsorbent, the adsorption tail liquid after pretreatment in step (1) is subjected to a column adsorption process.

[0075] (3) Desorption: desorb the rhenium-loaded saturated resin obtained by adsorption in step (2), the desorbent is 8wt% de-rhenium scavenger solution, the desorption volume is 4BV, and the de-rhenium scavenger (desorption solution) that has passed through the column is collected , then add an equal volume of ammonia water, stir and contact...

Embodiment 3

[0084] The present embodiment provides a method for recovering trace amounts of rhenium from a uranium mine in-situ leaching solution, comprising the following steps:

[0085] (1) Pretreatment: filter the adsorption tail liquid containing trace amount of rhenium (rhenium content less than 1ppm) after uranium adsorption, and then pass through 732 cation exchange resin, and collect the adsorption tail liquid after passing through the column.

[0086] (2) Adsorption: using the graphene resin functional ion exchange resin as the adsorbent, the adsorption tail liquid after pretreatment in step (1) is subjected to a column adsorption process.

[0087] (3) Desorption: desorb the rhenium-loaded saturated resin obtained by adsorption in step (2), the desorbent is 9wt% de-rhenium scavenger solution, the desorption volume is 4BV, and the de-rhenium scavenger (desorption solution) that has passed through the column is collected , then add an equal volume of ammonia water, stir and contact...

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Abstract

The present invention provides a method of recycling marks from uranium mines.This method includes the following steps: pre -processing: filtering the adsorbent tail liquid with trace content, and then over -yang ion exchange resin columns; adsorption: use functional ion exchange resinAfter the adsorption, the function ion exchange resin is used for relief, ammonia water is added to the solution, static layers, collecting water phase, and obtaining ammonium ammonium concentrated solution.The method of the present invention is proposed for the difficulty of recycling and recycling of the richness of uranium mines with trace content.The process of this method is simple and easy to produce large -scale production; chemical materials are common and low -consumption; it can effectively recover the amount of traces in the adsorption tail fluid on the basis of the process of immersion uranium.The total recovery rate is as high as 98 %, and the reagents used are environmentally friendly and have obvious social benefits and economic benefits.

Description

technical field [0001] The invention relates to a method for recovering trace amount of rhenium from in-situ leaching solution of uranium ore, and belongs to the field of hydrometallurgy. Background technique [0002] Rhenium is a rare element, the content of which is only 1 × 10 in the earth's crust -9 %. Due to its unique and excellent physical and chemical properties such as high melting point, high boiling point, high density, excellent ductility, formability, and catalytic activity, rhenium and its alloys have a huge role in petrochemical, aerospace, metallurgy, national defense and other fields. The application prospect is in short supply in the market. The difficulty of extracting and separating rhenium and the rarefaction of rhenium and its alloys make the price of rhenium rise step by step, thus attracting people's attention. Therefore, the research on the extraction and separation of rhenium has become the top priority of the research on rhenium. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B61/00C22B3/42C22B3/24C22B3/22
CPCC22B61/00C22B3/42C22B3/24C22B3/22
Inventor 陈振岩房大维里宏亮张磊李清春王雷庞力源肖程邵建欣张雷颜伊含王琦玮李岩宋宗仁满安静
Owner BC P INC CHINA NAT PETROLEUM CORP