Beneficiation reagent and of separating and recycling precious metal from cooper anode mud using method thereof

Abstract

The invention belongs to the field of precious metal metallurgy, in particular to a benenficiation reagent and a using method of separating and recycling precious metal from copper anode mud. According to weight proportion, the beneficiation reagent is composed of 1-10 parts by weight of collector pinitol xanthate and pinitol aerofloat, 1-10 parts by weight of inhibitor sodium, namely, hexametaphosphate and 1-10 parts by weight of foaming agent, namely, pinitol oil. The method of separating and recycling precious metal is that first of all, acid leaching pretreatment is performed, then acid leaching residue is prepared into slurry, the slurry is added with the beneficiation reagent and rough selection is performed, then two accurate selections are performed, and precious metal ores are acquired. The benericiation reagent and the using method of separating and recycling precious metal from cooper anode mud is strong in selectivity of the beneficiation reagent, high in precious metal separating efficiency, and high in recycling rate of gold and silver, and capable of reducing cost and pollution.

Description

technical field [0001] The invention belongs to the field of precious metal metallurgy, and in particular relates to a beneficiation agent for separating and recovering precious metals from copper anode slime and a use method thereof. Background technique [0002] Copper anode slime is a by-product of copper electrolytic refining and is an important raw material for the recovery of precious metals. In the process of copper electrolysis, the potential of gold, silver and platinum group metals is relatively positive, and it does not electrochemically dissolve on the copper anode and is produced as extremely fine particles. Fall off from the anode to the bottom of the electrolytic cell; elements such as sulfur, selenium and tellurium exist in the form of stable compounds on the anode, and sink to the bottom of the electrolytic cell without electrochemical reaction; insoluble nickel sinks to the bottom of the electrolytic cell in a compound state. There are three representative ...

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Problems solved by technology

In the existing technology, the following disadvantages generally exist: the dispersion loss of precious metals in each process is very serious; the direct recovery rate of precious metals is low; There are many toxic elements such as lead and arsenic remain seriously; the degree of automation of the equipment is low, and the energy consumption is large

Using the flotation process to treat copper anode slime can greatly improve the processing capacity of copper anode slime, create favorable conditions for smelting and reduce flux consumption. However, this method is still rarely used in China to treat copper anode slime. Related experimental research Insufficient, especially the immature research on beneficiation agents and beneficiation methods used in anode slime, resulting in unsatisfactory beneficiation and smelting effects and high content of precious metals in tailings

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