Method for adsorbing and preparing high-purity copper and copper sulfate from copper plating sludge

A high-purity copper and copper sulfate technology, applied in the improvement of process efficiency, photographic technology, instruments, etc., can solve the problem of low compound purity, achieve high purity, high leaching rate, and avoid residues.

Inactive Publication Date: 2020-03-27
陕西易莱德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing high-purity copper and copper sulfate by adsorption from copper-plating sludge, which solves the problem of low purity of recycled copper or copper compounds existing in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for adsorbing and preparing high-purity copper and copper sulfate from copper-plating sludge, specifically implemented according to the following steps:

[0026] Step 1. Dissolving and leaching: take the dissolving solution and metal scraps and add them to the dissolving tank at a volume ratio of 3:1 to stir, and pass in air to dissolve and leach at 45°C for 1 hour to obtain the leachate;

[0027] Step 2, ion adsorption, add magnetic composite particles to the leaching solution and stir for 0.5h, let it stand for 3h, magnetically separate to obtain copper-containing magnetic composite particles and low-copper filtrate, use 2mol / L sulfuric acid solution to stir and desorb copper-containing magnetic composite particles 2h, magnetic separation to obtain desorbed magnetic composite particles and desorbed liquid;

[0028] Step 3, copper extraction, adding copper extractant AD-100 to the desorption solution for extraction and separation, to obtain a raffinate and a c...

Embodiment 2

[0041] A method for adsorbing and preparing high-purity copper and copper sulfate from copper-plating sludge, specifically implemented according to the following steps:

[0042] Step 1. Dissolving and leaching: Take the dissolving solution and metal scraps and add them to the dissolving tank at a volume ratio of 3.5:1 for stirring, and pass in air to dissolve and leach at 45°C for 1.3 hours to obtain the leachate;

[0043] Step 2, ion adsorption, add magnetic composite particles to the leaching solution and stir for 0.9h, let stand for 3.5h, magnetically separate to obtain copper-containing magnetic composite particles and low-copper filtrate, and use 2.6mol / L sulfuric acid solution to copper-containing magnetic composite particles. Stir and desorb for 2.4 hours, and magnetically separate to obtain desorbed magnetic composite particles and desorbed liquid;

[0044] Step 3, copper extraction, adding copper extractant AD-100 to the desorption solution for extraction and separati...

Embodiment 3

[0057] A method for adsorbing and preparing high-purity copper and copper sulfate from copper-plating sludge, specifically implemented according to the following steps:

[0058] Step 1. Dissolving and leaching: take the dissolving solution and metal scraps and put them into the dissolving tank at a volume ratio of 5:1 for stirring, and pass in air to dissolve and leach at 45°C for 3 hours to obtain the leachate;

[0059] Step 2, ion adsorption, add magnetic composite particles to the leaching solution and stir for 1 hour, let stand for 5 hours, magnetically separate to obtain copper-containing magnetic composite particles and low-copper filtrate, use 6mol / L sulfuric acid solution to stir and desorb copper-containing magnetic composite particles for 4 hours , magnetic separation to obtain desorbed magnetic composite particles and desorbed liquid;

[0060] Step 3, copper extraction, adding copper extractant AD-100 to the desorption solution for extraction and separation, to obta...

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PUM

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Abstract

The invention discloses a method for adsorbing and preparing high-purity copper and copper sulfate from copper plating sludge. The method comprises the steps of dissolution and leach: adding acid intocopper plating sludge, carrying out microwave oscillation leaching, and filtering to obtain a leaching solution; ion adsorption: adding magnetic composite particles into the leaching solution, performing magnetic separation to obtain copper-containing magnetic composite particles, and desorbing the copper-containing magnetic composite particles to obtain a desorption solution; copper extraction:adding a copper extractant into the desorption solution for extraction to obtain a copper-containing organic phase; reextraction: adding a sulfuric acid solution into the copper-containing organic phase for reextraction to obtain a strip liquor; oil removal: deoiling by using composite fibers to obtain a copper sulfate solution; copper electrodeposition: carrying out electrodeposition reaction onthe copper sulfate solution under the action of direct current to obtain pure copper and electrolytic waste liquid; and preparation of the copper sulfate: concentrating and drying the electrolytic waste liquid to obtain the solid copper sulfate. The method is simple in process, the recovered and regenerated copper has high purity, and the copper sulfate meets electroplating requirements.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal recovery, and relates to a method for preparing high-purity copper and copper sulfate by adsorption from copper plating sludge. Background technique [0002] Copper is not only an ancient metal, but also a modern engineering material full of vigor and vitality. It has good ductility, high thermal and electrical conductivity, so it is often used in cables and electrical and electronic components, and can also be used as a building material . In addition, copper is also a durable metal that can be recycled many times without loss of its mechanical properties. In modern industry, the production of metal waste is unavoidable. These metal wastes include copper plating tank slag and sludge, copper waste catalyst, copper etching solution sludge, copper plating sludge, copper-containing waste rock, copper oxidation sludge, etc. If Directly discarding these metal scraps will cause serious heavy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B15/00C25C1/12
CPCC22B7/007C22B15/0071C22B15/0086C25C1/12Y02P10/20
Inventor 鱼智翔
Owner 陕西易莱德新材料科技有限公司
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