Method for extracting gold from arsenic-containing mineral through oxygen leaching and roasting

The invention belongs to the technical field of wet smelting, and particularly relates to a method for extracting gold from arsenic-containing minerals through oxygen leaching and roasting, which comprises the following steps of: S1, finely grinding arsenic-containing gold minerals, and then carrying out oxygen pressure leaching and filtering to obtain leached residues; a leaching medium for oxygen pressure leaching is a neutral medium, and the liquid-solid mass ratio is (2-4): 1; s2, air is introduced, the leached residues are roasted for 1-3 h at the temperature of 600-680 DEG C, and roasted residues are obtained; s3, adding an alkali solution into the roasting slag to adjust the pH value to 10-11, adding cyanide, stirring for 30-40 hours, and filtering to obtain a cyanide solution; and feeding the cyanide solution to a gold extraction process. According to the method, the technologies of oxygen pressure decomposition of the arsenic and gold minerals and pyrogenic process pretreatment before gold extraction