Rapid simultaneous detection method for content of copper, zinc and iron in gold mud

Abstract

The invention relates to a rapid simultaneous detection method for the content of copper, zinc and iron in gold mud. A sample is dissolved by utilizing nitric acid, aqua regia, sulfuric acid and nitric-sulfuric acid; after sulfuric acid is added for smoking, a copper-zinc-iron compound is decomposed to form a corresponding oxide, HAuCl4 is decomposed to form elemental gold, and H<n-1>[AgCln]<-n+1> is decomposed to form silver chloride; after sulfuric acid is added for dissolving salts, the copper iron zinc oxide is dissolved to form sulfate; after ammonia water is added, silver-copper-zinc is transformed into corresponding ammonia complex ions, iron is transformed into iron hydroxide precipitation, and gold and iron are filtered and then separated from filtrate; after the pH value of the filtrate is adjusted by adding sulfuric acid and ammonia water, sodium chloride is added for precipitation of silver, the silver is recovered by filtering, copper in the filtrate is detected by adopting iodometry, and zinc is detected by adopting an EDTA method; and iron is detected by using a potassium dichromate method. The sample consumption is less in a detection process, precious metals can be effectively classified and recovered, the detection process is simplified, the energy consumption is reduced, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to a gold mud composition detection method, in particular to a joint detection method for copper, zinc and iron content in gold mud. Background technique [0002] Gold mud is an important intermediate product in the process of gold smelting. It is a black muddy substance obtained by adding reducing substances to the cyanide-containing liquid. In addition to gold and silver, it is mainly composed of copper, iron, lead, zinc, etc. Composition of base metals. [0003] At present, there is no unified and standardized analysis method for the detection of impurity elements in gold mud, and it is usually carried out with reference to the chemical analysis method of alloy gold (GB / T15249) and the chemical analysis method of gold concentrate (GB / T7739). However, this type of method has great disadvantages, mainly in: [0004] First, the national standard is formulated for two specific products, alloy gold and gold concentrate, and the ...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a rapid joint measurement method for the content of copper, zinc and iron in gold mud in view of the characteristics of gold mud products. The detection process consumes less samples, can effectively classify and recover precious metals, simplify the detection process, and reduce energy consumption. , improve detection efficiency

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