Copper electrolysis refining plant

The electrolytic refining of copper is to cast the copper refined by the fire method into an anode plate, use pure copper flakes as cathode plates, put them into electrolytic cells alternately, use copper sulfate and sulfuric acid aqueous solution as electrolyte, and under the action of direct current, Copper on the anode and metals with negative potential dissolve into the solution, while noble metals and some metals (selenium, tellurium) are insoluble, and become anode slime and precipitate at the bottom of the electrolytic cell. Copper in the solution is preferentially precipitated on the cathode, while other potentials are lower. Negative metals cannot precipitate on the cathode. In this way, the metal copper precipitated on the cathode is of high purity, which is called cathode copper or electrolytic copper.

copper electrolysis plant

SUNY GRUOP copper electrolytic treatment and reuse equipment is used to refine mixed metal blister copper into a pure copper production line of more than 99.99%.

Process flow:

Copper electrolytic treatment and reuse equipment is mainly based on the principle of copper electrolysis to purify crude copper. The separated metal part is cast into a copper electrolytic anode plate through intermediate frequency smelting for electrolytic copper. Since many non-ferrous metals and rare earths are used in the circuit board manufacturing process Metals and precious metals often passivate the anode in conventional electrolysis, resulting in the failure of electrolysis. Here, it is recommended to use a pulse automatic electrode change electrolysis system, which not only effectively solves the problem of anode passivation, but also helps loosen and fall off the anode slime. The time adjustment is arbitrarily set on the cycle time relay on the panel of the electrolytic control cabinet.

Copper electrolytic treatment and reuse equipment is composed of multiple IGBT automatic power control modules and belongs to digital pulse power equipment. A semi-automatic vertical mold is used when casting the anode plate. In order to shorten the electrolysis cycle, the thickness of the anode is generally controlled at 10 mm to 30 mm. During electrolysis, the cathode of the electrolytic cell obtains electrolytic pure copper, and the anode produces precious metals such as gold, silver, platinum, and palladium. Anode slime, wash the anode slime, carry out reduction smelting and oxidation smelting in the intermediate frequency furnace and blowing furnace, the smelted precious metal alloy blocks are crushed, and then extract, separate and refine various precious metals through precious metal liquid making. In the production workshop, exhaust gas absorption devices with ozone must be installed in all places where tail gas is generated, and tail liquid diversion devices must be installed in all places where tail liquid is generated to divert the tail liquid to the waste water treatment workshop for treatment and discharge or reuse.