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    • 1. 发明申请
    • AN ELECTROLYTIC PROCESS FOR THE SIMULTANEOUS DEPOSITION OF GOLD AND REPLENISHMENT OF ELEMENTAL IODINE
    • 用于同时沉积金和电解液的电解过程
    • WO1987003623A1
    • 1987-06-18
    • PCT/US1985002426
    • 1985-12-06
    • IN-SITU, INC.NIPPON MINING COMPANY LIMITED
    • IN-SITU, INC.NIPPON MINING COMPANY LIMITEDMURPHY, Jack, W.
    • C22B11/04
    • C01G7/00C22B11/04C25C1/20E21B43/28
    • An improved process for recovering gold from gold-containing materials by iodide/iodine leaching wherein the pregnant lixiviant containing solubilized gold and iodine is treated in an electrolytic cell to reduce gold in solution to elemental gold for recovery and reduce iodine to iodide at the cathode, so as to prevent iodine from interfering with subsequent gold recovery processes, and at the same time reoxidize iodide present at the anode to elemental iodine to regenerate the leach solution to the desired iodide:iodine weight ratio, e.g. about 2:1 to about 10:1. Gold is precipitated in the cathode compartment, and if desired, the cathode effluent may be treated for further removal of traces of gold before being passed to the anode compartment. A method for preventing iron contamination of the cathode is also provided comprising buffering the lixivant solution to a pH of about 5.
    • 一种通过碘化物/碘浸出从含金属材料中回收金的改进方法,其中在电解池中处理含有溶解的金和碘的怀孕浸液,以减少金属溶液中的金,用于回收并在阴极将碘还原成碘, 以防止碘干扰随后的金回收过程,并且同时将存在于阳极的碘化物再氧化成元素碘以将浸出溶液再生成所需的碘:碘重量比,例如 约2:1至约10:1。 金沉淀在阴极室中,如果需要,阴极流出物可以在被传递到阳极室之前进一步去除痕迹的金。 还提供了一种用于防止阴极的铁污染的方法,包括将浸取溶液缓冲至约5的pH。