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With the exhaustion of tractable gold mine, the utilization of intractable gold mine, such as arsenic gold mine in high concentration, is at a premium all over the world.Arsenic wraps gold grain in the form of arsenopyrite which isolates the cyanide and gold gain.The cyaniding process obstructs the cyanide from the grains and the arsenic minerals increase the exhaustion of cyanide.The decomposition product forms compact film on the surface of gold grain and leads to the secondary wrap.