Method for preparing high-purity rhenium powder from rhenium-containing high-arsenic copper sulfide

Abstract

The invention discloses a method for high-effectively enriching rhenium from rhenium-containing high-arsenic copper sulfide. The method includes: rhenium-rich slag and a certain amount of alkali are mixed to obtain size, and pressing, heating and alkaline leaching is performed, and after filtering and washing is performed, rhenium enters extract in the form of ammonium rhenate, and a part of arsenic enters the extract in the form of sodium arsenate. Reactive metal power is heated to replace the rhenium in the extract, and after filtering and washing is performed, the rhenium oxide is enriched, and separation between the rhenium and the arsenic can be achieved. The raw material of the method is the rhenium-rich slag which is obtained by sulfide precipitation of acidic wastewater generated during a production process of copper smelting enterprises and is rich in copper and arsenic; the method can fully leach the rhenium, and the metal power is used to replace the extract to obtain a rhenium-enrichment; the process of rhenium extraction can be simplified, and the cost of rhenium extraction is reduced. The method is simple in process, is short in flow, is high in enrichment ratio, is high in material adaptability, is low in cost, is easy to industrialize, has good application value, and can increase output value and profit of the copper smelting enterprises.

Description

technical field [0001] The invention belongs to the field of rare metal metallurgy and material preparation, and relates to a method for preparing high-purity rhenium powder from rhenium-containing high-arsenic copper sulfide. Background technique [0002] The rhenium-containing high-arsenic copper sulfide raw material is a kind of difficult-to-handle rhenium extraction material, which generally comes from the materials produced in the intermediate smelting process of copper smelters. At present, China is the country that produces the most copper in the world, and a large amount of this material Rhenium material has a high value, and now major copper smelting enterprises are paying attention to the extraction and recovery of rhenium. In order to recover rhenium better, a method for preparing high-purity rhenium powder from rhenium-containing high-arsenic copper sulfide was invented. At present, the methods for extracting rhenium from various rhenium-containing materials are...

AI Technical Summary

Problems solved by technology

[0020] These processes are mainly to separate and recover rhenium from leaching raw ore, waste catalyst, waste liquid and soot, and the method of preparing high-purity rhenium powder by leaching with nitric acid-neutralization of calcium-containing substances-resin exchange-precipitation of rhenium with potassium chloride-hydrogen reduction has not yet been seen. to report

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