Method for recovering rhenium from high-temperature alloy pickle liquor

A technology of superalloy and acid leaching solution, applied in the field of rare metal resource recovery and utilization, can solve the problems of long recovery process, complicated procedures, large rhenium loss, etc., and achieve high direct rhenium yield, simple operation and low cost. Effect
CN103789552AInactive Publication Date: 2014-05-14NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Publication Date
2014-05-14
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a method for recovering rhenium from a high-temperature alloy pickle liquor. The method comprises the following steps: 1, adjusting the pH value of the high-temperature alloy pickle liquor to 1-2, and then adsorbing rhenium and molybdenum in the high-temperature alloy pickle liquor by adopting ion exchange resin; 2, desorbing molybdenum by adopting a mixed solution of ammonia water and ammonium chloride, and then desorbing the rhenium by using an ammonium thiocyanate solution, so as to obtain stripping liquid containing rhenium; 3, adding water soluble potassium to the stripping liquid containing rhenium according to the ratio, and then orderly heating, concentrating, crystallizing, washing and recrystallizing, so as to obtain potassium perrhenate. The ion exchange resin adsorption and step-by-step desorption are organically combined, the rhenium loss can be effectively avoided, the technological process is shortened, the process is simple and feasible, and the production cost is greatly reduced.
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Description

technical field

[0001] The invention belongs to the technical field of recovery and utilization of rare metal resources, and in particular relates to a method for recovering rhenium from a high-temperature alloy acid leaching solution. Background technique

[0002] Rhenium is a precious scattered metal with high melting point, high strength, good plasticity and excellent mechanical stability, which makes it widely used in important fields such as national defense, aviation, aerospace, petrochemical and electronic industries, especially Petroleum reforming catalysts and superalloys account for the majority of rhenium consumption. Rhenium is mainly recovered from molybdenite and copper sulfide ore, and currently there are mainly two treatment processes: fire method and wet method. The pyrotechnic process is to oxidize and roast molybdenite or copper sulfide ore first, oxidize rhenium sulfide to form volatile and water-soluble rhenium oxide Re2O7, enter the smoke, and then abs...

Claims

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