Method for removing copper ions in zinc sulfate solution

A zinc sulfate solution and copper ion technology, applied in the chemical industry, can solve problems such as unsatisfactory effect, complicated treatment process, difficult copper and cadmium slag, etc., to achieve economic and environmental benefits, good effect, and short copper removal operation time. Effect

Inactive Publication Date: 2016-03-16
HUNAN LIHONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The treatment process of the above method is very complicated, the cost is very high, and the effect is not very satisfactory, and copper cadmium slag that is difficult to handle will also be produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one, a kind of method for removing copper ion in the zinc sulfate solution, it is to adopt ammonium bisulfite to remove the copper ion in the zinc sulfate solution as reducing agent, the pH value in the zinc sulfate solution is 4.0, in the zinc sulfate solution The concentration of copper ions was 1 g / L.

[0020] The specific steps are as follows:

[0021] A, zinc sulfate solution is added in the reaction tank;

[0022] B, the zinc sulfate solution in the reaction tank is warming up to 45 ℃;

[0023] C. Add ammonium bisulfite to the reaction tank, and use ammonium bisulfite as a reducing agent to reduce divalent copper ions in the zinc sulfate solution, 1m 3 Add 5.1Kg of ammonium bisulfite to the zinc sulfate solution, the molar ratio of ammonium bisulfite to copper ions is 3.2, the reaction time is 25min, and the reaction temperature is 45°C, so that the copper ions in the zinc sulfate solution change from divalent to oxidized. Cuprous form, isolated from...

Embodiment 2

[0030] Embodiment two, a kind of method for removing copper ion in the zinc sulfate solution, it is to adopt ammonium bisulfite to remove the copper ion in the zinc sulfate solution as reducing agent, the pH value in the zinc sulfate solution is 4.25, in the zinc sulfate solution The concentration of copper ions is 5g / L.

[0031] The specific steps are as follows:

[0032] A, zinc sulfate solution is added in the reaction tank;

[0033] B, the zinc sulfate solution in the reaction tank is warming up to 50 ℃;

[0034] C. Add ammonium bisulfite to the reaction tank, and use ammonium bisulfite as a reducing agent to reduce divalent copper ions in the zinc sulfate solution, 1m 3 Add 25.3Kg of ammonium bisulfite to the zinc sulfate solution, the molar ratio of ammonium bisulfite to copper ions is 3.25, the reaction time is 28min, and the reaction temperature is 50°C, so that the copper ions in the zinc sulfate solution change from divalent to oxidized. Cuprous form, isolated fro...

Embodiment 3

[0041] Embodiment three, a kind of method for removing copper ion in the zinc sulfate solution, it is to adopt ammonium bisulfite to remove the copper ion in the zinc sulfate solution as reducing agent, the pH value in the zinc sulfate solution is 4.5, in the zinc sulfate solution The concentration of copper ions is 10g / L.

[0042] The specific steps are as follows:

[0043] A, zinc sulfate solution is added in the reaction tank;

[0044] B, the zinc sulfate solution in the reaction tank is warming up to 55 ℃;

[0045] C. Add ammonium bisulfite to the reaction tank, and use ammonium bisulfite as a reducing agent to reduce divalent copper ions in the zinc sulfate solution, 1m 3 Add 49.9Kg of ammonium bisulfite to the zinc sulfate solution, the molar ratio of ammonium bisulfite to copper ions is 3.3, the reaction time is 30min, and the reaction temperature is 55°C, so that the copper ions in the zinc sulfate solution change from divalent to oxidized. Cuprous form, isolated fr...

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PUM

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Abstract

The invention provides a method for removing copper ions in a zinc sulfate solution. According to the method, ammonium hydrogen sulfite is used as a reducing agent for removing the copper ions in the zinc sulfate solution, the PH value of the zinc sulfate solution is 4.0-4.5, and the concentration of the copper ions in the zinc sulfate solution is 1-10 g/L. The method specifically comprises the following steps that the zinc sulfate solution is added into a reaction tank and is heated up to 45-55 DEG C; ammonium hydrogen sulfite is added for reaction, the reaction time is 25-30 min, and the reaction temperature is 45-55 DEG C; the copper ions in the zinc sulfate solution are changed to be in a cuprous oxide form from a bivalence form and are separated from the zinc sulfate solution; solid-liquid separation is conducted after reaction is completed, and the zinc sulfate solution without the copper ions and copper-bearing filter residues are obtained.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for removing copper ions in zinc sulfate solution. Background technique [0002] At present, there are many conventional methods for removing copper ions in zinc sulfate solution, such as zinc powder reduction method, extraction method and so on. The zinc powder reduction method is to add zinc powder to the zinc sulfate solution containing copper ions, and remove the copper ions in the zinc sulfate solution by replacement. The extraction method is to add dioctyl phosphate to the zinc sulfate solution containing copper ions, and extract the copper ions in the zinc sulfate solution through dioctyl phosphate. [0003] The treatment process of the above method is very complicated, the cost is very high, and the effect is not very satisfactory, and copper cadmium slag which is difficult to handle will also be produced. Contents of the invention [0004] The purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/44C22B15/00C22B19/00
CPCC22B3/44C22B15/0089C22B19/00Y02P10/20
Inventor 李才发
Owner HUNAN LIHONG NEW MATERIAL TECH CO LTD
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