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从低浓度铜溶液电积制取合格金属铜,一直是个难题。近年来,国外有用气体搅拌法从低浓度溶液电积铜的试验研究报导。1976年广东大宝山矿炼铜厂曾用空气搅拌法
It is always a difficult problem to make qualified metallic copper from low concentration copper solution. In recent years, foreign useful gas mixing method from low concentrations of copper electrowinning studies reported. In 1976, Guangdong Dabashan copper smelter used air mixing method