Process for Separating and Recovering Rhenium

A technology of perrhenic acid and calixarene, applied in chemical instruments and methods, rhenium compounds, inorganic chemistry, etc., can solve the problems of poor anti-interference ability, complicated process, low adsorption capacity, etc., and achieve cost saving, high purity, The effect of high extraction efficiency
CN103553139BInactive Publication Date: 2015-09-30LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Publication Date
2015-09-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of separation and reclamation of dispersed elements, and particularly relates to a method for separating and recovering a rhenium element. The method comprises the following steps: transforming a sample containing rhenium into a perrhenic acid ReO4<-> solution; enabling mannich alkali of calixarene to react with perrhenic acid ReO4<-> under an acid condition, so as to generate a white precipitate of perrhenic acid calixarenes ammonium salt; enabling the white precipitate of the perrhenic acid calixarenes ammonium salt to react under an alkaline condition; degrading the product into the perrhenic acid ReO4<-> and the mannich alkali of calixarene; concentrating the perrhenic acid ReO4<-> dissolved into the alkali; finally separating out perrhenate; recycling the calixarene mannich alkali after filtering. The method disclosed by the invention is simple, low in cost, free of pollution, and high in yield; no organic solvent is used in an operation process, and the pH value is controlled, so as to achieve the targets of separation and recovery. The reagent calixarene mannich alkali for recovery can be recycled.
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Description

technical field

[0001] The invention belongs to the technical field of separation, recovery and utilization of rare elements, and in particular relates to a method for separation and recovery of rhenium elements. Background technique

[0002] Rhenium (Re) is the latest important element discovered in the rare element (RSE) group, which belongs to a kind of precious rare metal element, and its content is very small in the earth's crust. Rhenium has high hardness, corrosion resistance, wear resistance and good ductility. It is widely used in national defense and aerospace, ultra-high temperature emission, and thermionic materials for special lamps. In the electronic structure of rhenium, the 5 electrons of the unsaturated 4d layer are easy to release, and the 2 electrons of the 6s layer are easy to participate in the interaction to form a covalent bond. In addition, its lattice parameters are large, so rhenium and its compounds It has excellent catalytic activity and is used ...

Claims

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