Method for electrolyzing refined copper at room temperature
A technology of electrolytic refining and electrolytic copper, which is applied in the field of electrolytic copper refining to achieve the effects of avoiding environmental pollution, reducing requirements for production equipment, and maximizing economic and social benefits
Inactive Publication Date: 2012-07-11
余东
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the energy consumption and environmental protection problems caused by the electrolyte must be heated and kept at 50-60°C in the existing electrolytic copper production technology
Method used
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Experimental program
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Embodiment Construction
[0024] A method for producing copper by electrolytic refining at room temperature, comprising:
[0025] 1. Electrolyte composition: H 2 SO 4 160g / L; Cu 2+ 45g / L; bone glue 30mg / L; thiourea 12mg / L; PAM (polyacrylamide) 10 mg / L; acetic acid (CH 3 COOH) 6mg / L, among them, Cu 2+ Added in the form of copper sulfate. The above formulas of medicines are directly added to the electrolyte according to the dosage. The electrolytic production process does not need to add individual medicines separately, but to supplement the spare electrolyte of the same formula according to the liquid level of the electrolyte.
[0026] 2. Electrolytic cell: The electrolytic cell is a rectangular trough with a liquid inlet pipe and a liquid outlet pipe. The size of the electrolytic cell is adjusted according to the specifications of the electrolytic copper cathode plate of the actual production product. The material of the electrolytic cell is soft PVC. .
[0027] 3. Anode material: The blister ...
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The invention relates to a method for electrolyzing refined copper, which is mainly used for improving the components of electrolyte. The electrolyte comprises the following components: 150 to 220 g / L of H2SO4, 40 to 60 g / L of Cu<2+>, 28 to 38 mg / L of bone glue, 10 to 15 mg / L of thiourea, 8 to 12 mg / L of PAM (polyacrylamide) and 5 to 10 mg / L of acetic acid (CH3COOH). A composite additive is addedinto the electrolyte, so the conductivity of the electrolyte is improved, simultaneously, impurity metal ions are removed from the electrolyte at the room temperature of between 10 and 25 DEG C; the directional movement speed of copper ions in the electrolyte at room temperature is improved, and concentration polarization is reduced; and the precipitation quality of cathode copper is improved, sothat electrolytic copper can be produced at room temperature. In the method for electrolyzing the refined copper at room temperature, the electrolyte is not needed to be heated and subjected to circular flow, so the production condition is simplified greatly; and the copper content of the electrolytic copper produced by the method is more than 99.99 percent, and the surface is flat and smooth.
Description
technical field [0001] The invention relates to a method for electrolytically refining copper, which is mainly used at normal temperature (10-25°C) to produce electrolytic copper without heating the electrolyte. Background technique [0002] At present, the common electrolytic copper technology is to make blister copper (98% copper) into a thick plate as an anode, and pure copper as a thin sheet as a cathode, and sulfuric acid (H 2 SO 4 ) and copper sulfate (CuSO 4 ) mixture as the electrolyte. After electrification, copper dissolves from the anode into copper ions and moves to the cathode. After reaching the cathode, electrons are obtained and pure copper is precipitated at the cathode (also known as electrolytic copper). Impurities in blister copper, such as iron and zinc, which are more active than copper, will dissolve into ions together with copper. Using this method requires relatively strict electrolysis conditions, requiring that the impurity content of the elect...
Claims
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IPC IPC(8): C25C1/12
CPCY02P10/20
Inventor 余东
Owner 余东