Abstract: A Carlin-type gold concentrate is a typical refractory gold concentrate， and most of the gold is encapsulated in pyrite and arsenopyrite， with a gold leaching rate of only 7.8 % by direct leaching. In order to address the difficult gold extraction and severe pollution caused by cyanide leaching in Carlin-type gold concentrate， a gold extraction method using pressure oxidation-iron alum decomposition-non-cyanide gold extraction was proposed. The encapsulated gold can be effectively dissociated after pre-treatment by pressure oxidation and iron alum decomposition. The gold leaching rates of oxygen pressure residue and alum destruction slag were 76.2 % and 86.1 %， respectively， under the following conditions： reaction time of 2 h， activated carbon dosage of 50 g/L， stirring speed of 400 r/min， temperature of 30 ℃， pH value of 1.3-1.5， air flow rate of 2 L/min， liquid-solid ratio of 4：1， and thiourea dosage of 4 g/L. This method realizes efficient and clean extraction of Carlin-type refractory gold concentrate.