Method for extracting copper from organic silicon scrap

Abstract

The invention discloses a method for extracting copper from an organic silicon scrap, and particularly discloses a method for extracting a copper simple substance from waste contact, pulp residue hydrolysis residue and waste acid water generated in production of an organic silicon monomer. The method comprises the following steps: a, grinding the waste contact and / or pulp residue hydrolysis residue; b, adding a soluble oxidant to a solution of hydrochloric acid, and then carrying out acidizing treatment on the grinded waste contact and / or pulp residue hydrolysis residue by using the solution of hydrochloric acid containing the soluble oxidant; c, neutralizing the acidized slurry by using an alkali compound, and adjusting into subacidity; d, filtering the neutralized slurry to obtain filtrate; e, displacing copper in the filtrate with active metal, and then drying to obtain the product. By adopting the method, the solution of hydrochloric acid containing the oxidant is utilized to acidize, so that the copper in the scrap is completely converted into divalent copper; the product is high in copper purity; the copper in the scrap is lower than 0.5%; the problems of copper recovery and environmental protection in an organic silicon production process are solved.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a method for extracting copper from organosilicon waste, in particular to a process for extracting copper elemental substance from waste contacts produced in the production of organosilicon monomers, pulp slag hydrolysis waste residue, and waste acid water. Reduce the harm of toxic heavy metals to the environment while realizing the reuse of resources. Background technique [0002] Organosilicon is known as industrial monosodium glutamate. Its influence on industry and our daily life is increasing day by day. The development of organosilicon in my country has begun since the 1950s, but in the past 10 years, my country's organosilicon has developed the fastest and has made the greatest technological progress. 10 years. With the development of my country's economy, the society's demand for organic silicon products is also increasing, and the production of organic silicon monomers is ...

AI Technical Summary

Problems solved by technology

[0004] Nowadays, some domestic small manufacturers are also engaged in the production of extracting copper from organic silicon waste, but the production method is relatively rough. They just use acid to acidify the waste, and do not extract the cuprous and elemental copper in the waste deeply. The copper content in the waste slag after completion is still high, and the purity of copper is low, which is not conducive to environmental protection