Process for preparing cathode copper by one-step electrolysis of raw red copper

A technology of purple miscellaneous copper and cathode copper, which is applied in the direction of photographic technology, equipment, photographic auxiliary technology, etc., can solve the problems of long production process, high manufacturing cost, and low copper recovery rate, and achieve simple production method and low manufacturing cost , the effect of high copper recovery rate

Inactive Publication Date: 2003-01-15
HONGZHI IND DEV JILIN CITY
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Problems solved by technology

[0003] The current method of using red copper as raw material to produce cathode copper is as follows: the red copper is made into anode copper plate through pyro-refining production process, and then the anode copper plate is made into cathode copper through electrolytic production process, and its production Long process flow, high labor intensity, low production efficiency, long operating furnace time, low copper recovery rate, high energy consumption, high manufacturing cost, and pollution to the environment due to incomplete combustion of heavy oil during reduction

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  • Process for preparing cathode copper by one-step electrolysis of raw red copper
  • Process for preparing cathode copper by one-step electrolysis of raw red copper

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[0008] Use below figure 1 The process flow diagram and examples of the one-step electrolytic production of cathode copper from red copper are shown to illustrate the present invention in detail.

[0009] Studies have shown that the main impurities of red copper are lead and tin, the general content is about 0.50%, in addition, there are a small amount of zinc, lead and some non-metallic impurities, such as plastic, rubber, paint leather and other surface coatings.

[0010] Lead reacts with sulfuric acid during electrolysis to form lead sulfate and lead sulfide, which are insoluble and cover the surface of the anode. Since the present invention uses a red copper anode with a large surface area and a high chemical dissolution rate, the surface of the anode is covered with lead sulfate and lead sulfide, which reduces the speed of chemical dissolution of the red copper and is more conducive to the implementation of the production method of the present invention.

[0011] During e...

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Abstract

A process for preparing cathode copper from raw red copper by one-step electrolysis includes such steps as removing impurity, firing to remove insulation layer, pickling to remove oxidized layer, washing with hot water, die pressing to obtain copper anode, wapping it in acid-resistant porous cloth bag, suspending in electrolyte, electrolyzing to obtain cathode copper and washing with hot water. Its advantages are simple process, high recovery rate of copper, high quality, low cost and no environmental pollution.

Description

technical field [0001] The invention relates to a method for producing cathode copper by one-step electrolysis of red miscellaneous copper, which belongs to the high-grade utilization of red miscellaneous copper by electrolysis. Background technique [0002] The anodes used in the traditional copper cathode production are croissor-shaped anode copper plates with a copper content of ≥99.2% produced by fire refining. According to the copper-containing and impurity-containing raw materials, the production process and operation methods are also different, but according to the physical and chemical change characteristics and operation procedures of the production process, each cycle has to go through four processes: melting, oxidation, reduction and casting. . [0003] The current method of using red copper as raw material to produce cathode copper is as follows: the red copper is made into anode copper plate through pyro-refining production proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/12
CPCY02P10/20
Inventor 缪树槐
Owner HONGZHI IND DEV JILIN CITY
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