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戴克斯台克直接提铜法是用氯盐介质电积法使黄铜矿转化为铜和硫,浸出、电积、氧化除铁三过程在同一设备中进行。但该法浸出反应速度慢;电积难以在高 Cu~+浓度下进行。为此我们把二氯化铜浸出引入 D 法,即增加电积液中铜的浓度,因此缩短了浸出-电积时间。此外还改变了 D 法的溶液循环方式,即把含 Cu+70～80%后液送入阴极室,返回的阴极液与预处理渣调浆送阳极室,阳极液返回预处理工序。由此降低了直流电耗,克服了 D 法中浸出率与阴极液中 Cu~+浓度的矛盾。采用改良法,4～6小时的浸出率达95%以上,渣含铜在1%左右;电耗为1000～1500(度/吨铜)。D 法和改良法目前都处于试验阶段。
Dexter Taiwan direct mentioning copper method is the use of chloride salt medium electrowinning chalcopyrite into copper and sulfur, leaching, electrowinning, iron oxide removal three processes in the same equipment. However, the method of leaching reaction slow; electricity is difficult to high concentrations of Cu ~ +. To this end, we introduce copper dichloride leaching method D, that is, increase the concentration of copper in the electrowinning solution, thus shortening the leaching - electrowinning time. In addition, the solution circulation method of method D is changed, that is, the liquid containing Cu + 70-80% is sent to the cathode chamber, the returned catholyte and pretreatment slag are transferred to the anode chamber and the anolyte is returned to the pretreatment process. Thereby reducing the DC power consumption, to overcome the D method leaching rate and catholyte concentration of Cu ~ + conflict. Using improved method, 4 to 6 hours leaching rate of 95% or more, slag containing copper at about 1%; power consumption of 1000 ~ 1500 (degrees / ton of copper). D method and improvement method are currently in the experimental stage.