关键词: 粉炭产生, 降低炭损, 粉炭收集, 多段浸出法, 金回收

Abstract: High gold powdered carbon is inevitably produced in the process of extracting gold with carbon leaching. Aiming at the problems，the measures of reducing carbon loss，optimizing powder carbon collection and adopting multi-stage leaching were put forward by Jiangxi Sanhe Gold Industry Co.，Ltd. based on sysmatically analyzing the cause of production of powdered carbon. The practice showed that the implementation of these measures reduces the carbon loss，improves the recovery effect of powdered car⁃ bon，and realizes the high-efficiency recovery of gold in powdered carbon，indicating remarkable econom⁃ ic and social benefits and providing a reference for gold smelting enterprises which adopting carbon slurry process.

Key words: production of powdered carbon, reduction of carbon loss, collection of powdered carbon, multi-stage leaching method, gold recovery