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从矿石和贫精矿中回收细粒金的基本方法是氰化法。这一方法的实质,是将已破碎的含贵金属的矿石物料,与氰化钠的稀碱性溶液接触,在氰化钠碱性溶液作用下,金和银从矿石转入溶液。在吸附工艺中也必须进行氰化。因为在将金和银回收到树脂上之前,需将它们从矿石转入溶液中。
The basic method of recovering fine-grained gold from ores and lean concentrates is the cyanidation process. The essence of this method is that the crushed precious metal-bearing ore material is brought into contact with a dilute alkaline solution of sodium cyanide, and gold and silver are transferred from the ore to the solution under the action of an alkaline solution of sodium cyanide. Cyanide must also be carried out in the adsorption process. Because gold and silver are recycled into the solution before they are recycled onto the resin.