Abstract：The preliminary exploration on dressing and smelting of refractory gold ore by supercritical water oxidation(SCWO) was investigated. When oxidation reaction time is 10 min, temperature is 550oC and pressure is 25 MPa, the recovery rate of refractory gold ore can be from 35% or less to 92.8%, organic compounds can be oxidized to carbon dioxide and water, sulfur can be oxidized to sulfate and be sedimentated. Although arsenic is oxidized to arsenic trioxide, it dissolves hardly into supercritical fluid and is sedimentated too. Effluent water is clear, with a quality meeting the national integrated wastewater discharging standard. There is no pollutant in effluent air，it is promising for cleaner dressing and smelting of refractory gold ore.
马承愚;姜安玺;彭英利;杨建军. 超临界水氧化法选冶难选金矿石的初步实验[J]. , 2004, 4(5): 420-423.
MA Cheng-yu;JIANG An-xi;PENG Ying-li;YANG Jian-jun. Preliminary Exploration on Dressing and Smelting of Refractory Gold Ore by Supercritical Water Oxidation. , 2004, 4(5): 420-423.
2004, Vol. 4 
