China Nonferrous Metallurgy

At present, cyanidation is still the dominant method of gold extraction around the world. The cyanide tailings slurry produced after cyanide leaching of gold containing materials is separated by solid-liquid separation to form gold cyanide residue, and the gold cyanide residues with high toxicity and high harmfulness seriously endanger environmental safety and health, and restrict the healthy development of gold metallurgy industry. Therefore, how to use and dispose gold cyanide residues in a green and environmentally friendly manner is the research focus and hot spot of gold industry. In this paper, the cyanide removal technologies of gold cyanide residue slurry were reviewed, the features and the practical industrial application of each technology were introduced in detail. The examples of comprehensive cyanide removal treatments in the gold industry were summarized, and the future development trend of cyanide removal technology of gold cyanide residue slurry in the future industry was discussed and prospected.