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Producing Sponge Copper from Discarded Copper Oxide Ore

     

This is a method for producing sponge copper from discarded copper oxide ore, applicable to such ore with a copper content of 0.5% or higher.

Crush the discarded copper oxide ore into 2-4 cm gravel, place it in a stainless steel boiler, add water until the gravel is completely submerged, then add dilute sulfuric acid with a concentration of 40%-60% at a dosage of 20-30 kg per ton of gravel. Heat the stainless steel boiler at a temperature not lower than 100℃ for a duration of no less than 8 hours. Remove the gravel from the boiler and discard it, while retaining the reacted solution in the boiler.

Transfer the reacted solution to a reaction tank, add iron filings and stir. When the solution turns pale, drain the wastewater, fish out the iron filings, and the remaining substance in the reaction tank is sponge copper.

This method boasts the advantages of high recovery rate, low cost, high profitability, simple and feasible process, ease of operation, no pollution, and no exhaust gas emission.

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