A method for extracting molybdenum and rhenium from rhenium-containing molybdenum concentrate

A molybdenum concentrate and extraction technology is applied in the field of extracting molybdenum and rhenium from rhenium-containing molybdenum concentrate, which can solve the problems of large environmental pollution and low recovery rate, reduce the harm of lead, reduce the generation of smoke and dust, and reduce the content of impurities Effect
CN108588446BActive Publication Date: 2020-09-04西安鑫城投资有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
西安鑫城投资有限公司
Publication Date
2020-09-04

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Abstract

The invention belongs to the molybdenum metallurgy industry in the field of nonferrous metallurgy, and relates to a method for extracting molybdenum and rhenium from rhenium-containing molybdenum concentrate, which specifically includes 8 steps, which are pretreatment process, mixing and granulation process, solidification and roasting process, Water leaching process, precipitation, crystallization process, acid leaching process, co-extraction-reextraction process, acid precipitation process, the obtained molybdenum is crystallized in the form of ammonium tetramolybdate, and rhenium is crystallized in the form of potassium perrhenate. The present invention pretreats the molybdenum concentrate to remove lead, so that the lead is recovered in the form of lead dichloride, and the harm of lead is greatly reduced. Quicklime is added to convert the sulfide in the concentrate into sulfate, and eliminate the sulfide produced in the oxidation roasting process. SO 2 In addition, the process of the present invention is expected to shorten the process flow, reduce equipment investment, improve the recovery rate of molybdenum and rhenium and the quality of products, and facilitate the production of ammonium molybdate products.
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Description

technical field

[0001] The invention belongs to the molybdenum metallurgy industry in the field of nonferrous metallurgy, and relates to a method for extracting molybdenum and rhenium from rhenium-containing molybdenum concentrate. Background technique

[0002] my country's rhenium resources are extremely limited, and there are few independent minerals in nature. Generally, it appears in the crystal lattice of molybdenite with isomorphism, associated with molybdenum ore and copper ore. Rhenium has excellent ductility, formability and carburization resistance, high temperature resistance, high resistance, and is mainly used in aviation, high-energy physics, electronic technology, nuclear technology, etc. Therefore, the separation, enrichment and recovery of rhenium has become a research hotspot.

[0003] At present, the mainstream oxidation roasting-ammonia leaching process is to recover rhenium from smoke and molybdenum from ammonia leaching solution. The basic principles a...

Claims

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