A compound aminovinyl weakly basic anion exchange resin and a method for recovering rhenium from copper smelting waste acid

A weakly basic anion, complex amine ethylene technology, applied in the direction of anion exchange, ion exchange, chemical instruments and methods, etc., can solve the problems of high cost of recovering rhenium, complicated process, low purity of rhenium-containing products, etc., and achieve low cost , Simplified process, the effect of excellent desorption performance
CN107226880BActive Publication Date: 2019-04-12ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
Publication Date
2019-04-12

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Abstract

The invention relates to a composite vinylamine-series weakly-basic anion exchange resin and a method for recovering rhenium from waste acid produced in copper smelting, belonging to the technical field of recycling of metallic rhenium. The composite vinylamine-series weakly-basic anion exchange resin is prepared by swelling chloromethylated polystyrene microspheres in an organic solvent for 4 to 10 h; then slowly adding a mixture of dicyclohexylamine, pyridine and N-methylcyclohexylamine and carrying out a reaction at room temperature for 1 to 6 h; then carrying out heating to 40 to 90 DEG C and continuing the reaction for 6 to 18 h; and then carrying out vacuum pumping filtration. The composite vinylamine-series weakly-basic anion exchange resin provided by the invention has good adsorptive selectivity on low-concentration rhenium (2 to 10 mg / L) under the conditions of high acidity and existence of high-concentration impurity ions, and almost does not adsorb impurity ions, especially toxic arsenate ions; waste acid directly enters an arsenate after filtering; so process flow is simplified and the recovery rate of rhenium is increased.
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Description

technical field

[0001] The invention relates to a compound aminovinyl weakly basic anion exchange resin and a method for recovering rhenium from copper smelting waste acid, belonging to the technical field of metal rhenium recovery and utilization. Background technique

[0002] Metal rhenium has a high melting point, high strength, good plasticity and excellent mechanical stability, and is an indispensable element in aircraft engine turbine blades, so it has high value. Rhenium has no independent deposits in nature, and is mainly distributed in molybdenite and chalcopyrite of porphyry copper-molybdenum deposits. During pyrometallurgy, rhenium-containing concentrates generate volatile Re 2 o 7 Into the flue gas, the flue gas is purified in the acid system, Re 2 o 7 Enter spent acid to generate HReO 4 , become the raw material for extracting rhenium. The concentration of rhenium in the waste acid of molybdenum smelting is generally 50-500 mg / L. Compared with it, the conce...

Claims

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