(哈萨克国立工业大学，阿拉木图 480013
中南工业大学，长沙 410083)
摘 要: 将黄铁矿、砷黄铁矿和含砷金精矿与碳酸钠和碳混合，进行了氧化焙烧的理论分析和试验研究。结果表明，在723～973K温度范围内，黄铁矿和砷黄铁矿中的硫和砷氧化生成非挥发水溶性硫酸钠和砷酸钠。当用水浸出焙砂时，砷和硫全部转入溶液中。水浸渣用二氧化硫气体处理后，用氰化法浸出残渣，可使金的回收率达95.5%～96%。
关键字: 含砷精矿 黄铁矿 砷黄铁矿 碳酸钠 氧化焙烧
（Kazakh National Technical University,Repubilc of Kazakhstan,Almaty 480013
Central South University of Technology, Changsha 410083, P. R. China）
Abstract:Theoretical and experimental data showed that if pyrite, arsenopyrite or arsenic-gold concentrates, are mixed with sodium carbonate and carbon, and then roasted, sulfur and arsenic can be transformed into sulfate and arsenate at temperature 723～973K. Sulfate and arsenate are soluble and the residues can be treated with SO2 and then with cyanide. The recovery rate for gold can reach 95.5% to 96%.
Key words: arsenic-glod concentrates pyrite arseno pyrite sodium carbonate oxidizing roasting
