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难处理的含金砷黄铁矿的焙烧对环境为害很大。本文简略评述了各种水溶液处理方案。砷黄铁矿(FeAsS)的电化学氧化是一种可能办到的水溶液处理方案,它可将金从难处理砷黄铁矿精矿中解离出来,可与替代焙烧法的生物氧化法或加压氧化法相媲美。已在碱性溶液中研究了该矿物的电化学表面氧化,此时生成SO_4~(2-)。在酸性溶液中,砷黄铁矿颗粒很容易溶解不会纯化。其速率(在室温下)为15～1000微粒/日,电势范围为0.7～1V(SHE)。在0.7V(SHE),形成元素硫S~0这样,氧化剂的消耗就仅为碱性介质中的一半。将砷黄铁矿的特性与黄铜矿(CuFeS_2)的作了比较并得出结论:应进一步研究用矿浆电极法处理砷黄铁矿精矿的工业可行性。
Roasting of refractory gold-bearing arsenic pyrite is very damaging to the environment. This article briefly reviews various aqueous solutions. Electrochemical oxidation of arsenopyrite (FeAsS) is an aqueous solution treatment that may be performed that dissociates gold from refractory arsenopyrite concentrates and can be used in conjunction with the bio-oxidation of alternative roasting methods or Compressive oxidation method comparable. The electrochemical surface oxidation of this mineral has been studied in alkaline solution, where SO 4 2- (2-) is formed. In acid solution, the arsenopyrite particles are easily dissolved and not purified. The rate (at room temperature) is 15 to 1000 particles / day and the potential range is 0.7 to 1 V (SHE). At 0.7 V (SHE), the formation of elemental sulfur S ~ 0 thus consumes only half of the oxidizer in the alkaline medium. The characteristics of arsenopyrite are compared with that of chalcopyrite (CuFeS_2), and the conclusion is drawn that the industrial feasibility of treating arsenopyrite ore concentrate with pulp electrode should be further studied.