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Electroplating-grade copper sulfate and production process thereof

A production process, copper sulfate technology, applied in the field of electroplating copper sulfate and its production process, can solve the problems of copper sulfate crude product quality not up to standard, tail water can not be regenerated, discharge environmental pollution, etc., to achieve low production cost, easy operation, High economical effect

Active Publication Date: 2017-03-15
东莞市德睿工业废品处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional copper sulfate production process has not been purified, and the quality of the crude copper sulfate produced is not up to standard, containing more impurities and metal ions. In addition, the tail water generated during production cannot be regenerated, resulting in waste and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of production technology of feed grade copper sulfate, comprises the steps:

[0042] A. Preparation of rough purification etching waste liquid:

[0043] A1. Preparation of rough-purified acidic etching waste liquid: performing rough filtration, acid purification and filtration on copper-containing acidic etching waste liquid to obtain rough-purified acidic waste liquid;

[0044] A2. Preparation of rough purification alkaline etching waste liquid: coarsely filter, alkaline purification and filtration of copper-containing alkaline etching waste liquid to obtain rough purification alkaline waste liquid;

[0045] B. Neutralization and pressure filtration:

[0046] B1. Neutralize the rough purified acidic waste liquid prepared in step A1 and the rough purified alkaline waste liquid prepared in step A2, and then perform press filtration for the first time to obtain a primary filtrate and a primary filter cake, and mix the primary filtrate carry out fine filtration; ...

Embodiment 2

[0072] The difference between this embodiment and above-mentioned embodiment 1 is:

[0073] The step A1 is specifically as follows: coarsely filter the acidic etching waste liquid with a copper ion content of 85g / L, and the mesh number of the coarse filter is 350 mesh, so that the copper ion content is reduced to 72g / L, and the filtrate after the coarse filtration is added to the acid In the purification tank, add sodium chlorate, adjust the pH to 4.8 with ammonia water and tap water for acid purification, and then filter to obtain a rough purification acid waste liquid.

[0074] In described step A1, the content of copper ion in the acidic etching waste liquid is 85g / L, the content of chloride ion is 185g / L, the content of organic additive is 0.3g / L, and the mass concentration of HCl is 4.3%; Organic additive comprises The weight ratio of ammonia stabilizer, complexing agent and bank protection agent is 2:4:6; the dosage of sodium chlorate is 9g / L.

[0075] The step A2 is sp...

Embodiment 3

[0085] The difference between this embodiment and above-mentioned embodiment 1 is:

[0086] The step A1 is specifically as follows: coarsely filter the acidic etching waste liquid with a copper ion content of 90 g / L, the mesh number of the coarse filter is 400 mesh, and reduce the copper ion content to 75 g / L, and add the filtrate after the coarse filtration to acid In the purification tank, add sodium chlorate, adjust the pH to 5.0 with ammonia water and tap water for acid purification, and then filter to obtain a rough purification acid waste liquid.

[0087] In described step A1, the content of copper ion in the acidic etching waste liquid is 90g / L, the content of chloride ion is 190g / L, the content of organic additive is 0.5g / L, and the mass concentration of HCl is 4.3%; Organic additive comprises The weight ratio of ammonia stabilizer, complexing agent and bank revetment agent is 3:5:7; the dosage of sodium chlorate is 10g / L.

[0088] The step A2 is specifically: adjust th...

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PUM

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Abstract

The invention relates to the technical field of industrial wastewater and particularly relates to electroplating-grade copper sulfate and a production process thereof. The production process comprises the following steps: (A) preparation of roughly purified etching waste liquid; (B) neutralization and filter pressing; (C) extraction and ion exchange; (D) acidification and crystallization; and (E) purification and crystallization. The production process is environmentally friendly and pollution-free, the waste gas and the waste are not discharged, the utilization of the waste is realized, the cyclic utilization of mother liquid is realized, and the child liquid is sold to enterprises, so that the economic benefit is high, the equipment is simple, and the operation is simple and convenient. The content of copper ions in prepared electroplating-grade copper sulfate reaches up to 98%, so that the digestive systems of livestock are beneficially improved.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to an electroplating-grade copper sulfate and a production process thereof. Background technique [0002] At present, the electroplating-grade copper sulfate used as an electroplating additive is almost always produced from circuit board copper-containing etching waste liquid. There are two types of copper-containing etching waste liquid: acid waste liquid and alkaline waste liquid. However, the traditional copper sulfate production process has not been purified, and the quality of the crude copper sulfate produced is not up to standard, containing more impurities and metal ions. In addition, the tail water generated during production cannot be regenerated, resulting in waste and environmental pollution. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/10
CPCC01G3/003C01G3/10C01P2006/80
Inventor 邱国华罗海平
Owner 东莞市德睿工业废品处理有限公司
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