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通过热力学计算绘制了298.15 K条件下FeS2-FeAsS-KMnO4-H2O系的E-pH图,找出了较理想的KMnO4氧化FeS2和FeAsS的电位和pH预处理条件。实验表明,经高锰酸钾预处理后,包裹金的黄铁矿和毒砂被打开,这一结果为难浸金矿氧化预处理提供重要的理论参考。
The E-pH diagram of FeS2-FeAsS-KMnO4-H2O system at 298.15 K was drawn by thermodynamic calculation, and the potential and pH pretreatment conditions of KMnO4-oxidized FeS2 and FeAsS were found out. Experiments show that after the pretreatment with potassium permanganate, the gold-coated pyrite and arsenopyrite are opened, and the result provides an important theoretical reference for the oxidation pretreatment of refractory gold deposits.