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A kind of feed grade copper sulfate and production technology thereof

A production process, copper sulfate technology, applied in the field of feed-grade 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 simple operation, environmentally friendly production process, High economical effect

Active Publication Date: 2018-04-13
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

[0039] A kind of production technology of feed grade copper sulfate, comprises the steps:

[0040] A. Preparation of rough purification etching waste liquid:

[0041] 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;

[0042] 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;

[0043] B. Neutralization and pressure filtration:

[0044] 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

[0068] The difference between this embodiment and above-mentioned embodiment 1 is:

[0069] 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.

[0070] 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.

[0071] The step A2 is sp...

Embodiment 3

[0081] The difference between this embodiment and above-mentioned embodiment 1 is:

[0082]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.

[0083] 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.

[0084] The step A2 is specifically: adjust t...

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PUM

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Abstract

The invention relates to the technical field of industrial wastewater treatment, in particular to feed-level copper sulfate and a production technology thereof. The production technology comprises the following steps of A, preparing rough purification etching waste liquid; B, neutralizing, pressing and filtering; C, extracting, and exchanging ions; D, acidifying and crystallizing. The production technology has the advantages that the environment-friendly and pollution-free effects are realized, the emission of waste gas and wastes is avoided, and the wastes are utilized; the mother liquor is recycled, and the subsidiary liquor is sold back 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 the prepared feed-level copper sulfate is 95%, and the prepared feed can improve digestion systems of livestock and poultry.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a feed-grade copper sulfate and a production process thereof. Background technique [0002] At present, feed-grade copper sulfate as a feed additive is almost always produced from copper-containing etching waste liquid of circuit boards. There are two types of copper-containing etching waste liquid: acidic 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 purpose of the present invention is to provide a production process for feed g...

Claims

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Application Information

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Patent Type & Authority Patents(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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