copper slag furnace

  • Copper

    The process is a continuous, -step process which produces blister copper from concentrates in three interconnecting furnaces. Concentrate and oxygen-enriched air (30-35% O2) enter the smelting furnace through vertical lances and are smelted to produce a matte of 65% to 69% Cu and low-copper slag. Fuel must be burned to satisfy the heat ...

  • Special Wastes | Hazardous Waste | US EPA

    Calcium sulfate wastewater treatment plant sludge from primary copper processing. Slag tailings from primary copper processing. Flurogypsum from hydrofluoric acid production. Process wastewater from hydrofluoric acid production. Air pollution control dust/sludge from iron blast furnaces. Iron blast furnace slag. Treated residue from roasting ...

  • Melting Copper Cathode in Electric Furnace

    Melting should be performed without excessive losses of copper, either by volatilization or in any slag which cannot be returned to the blast furnace or reverberatory furnace for re-smelting.The process should be susceptible to ready mechanical manipulation for charging and tapping.

  • Reduction of copper smelting slag using waste cooking oil ...

    Copper slag cleaning in an electric furnace is a critical process for reducing the excessive magnetite (Fe 3 O 4) present in the copper slag to decrease the slag viscosity, which can promote the sedimentation of matte/copper in the slag, thus reducing the copper content of slag. In this study, laboratory-scale experiments were performed for ...