摘要
对含金复杂铜硫精矿进行了热压氧氨法脱硫，研究了氧气分压、氨初始浓度、浸取温度和反应时间等因素对硫转化率的影响。当氧压为０．５５ＭＰａ、ＮＨ３为５０ｇ／ｌ时，硫转化率可达６８％。脱硫预处理后金的氰化浸出率由３０％左右提高到９０％以上。
The desulfurization from complex Cu-S concentrates containing gold by hot-pressing oxygen and ammonia has been investigated. The influence of various parameters such as oxygen partial pressure, ammonia concentration, leaching time and reaction temperature on the conversion rate of sulphur in the concentrates were discussed in detail. The desulfurization rate can reach 68% in optimum conditions of 0.55MPa PO2, 50g/l NH3 and 3.5h leaching time. The cynidation leaching rate of Au from the desulfurized concentrates is up to over 90% from 30% or so.
出处
《矿产保护与利用》
1998年第4期25-28,共4页
Conservation and Utilization of Mineral Resources
关键词
热压氧氨法
复杂硫精矿
预处理
黄铜矿
脱硫
complex Cu-S concentrate, desulfurization, hot-pressing oxygen and ammonia, chalcopyrite, cynidation leaching of gold
