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难浸氰化尾渣浮选精矿的常温常压碱浸预处理
Cy Alkaline Pretreatment for Refractory Gold Floatation Concentrate of anidation Tailings under Normal Temperature and Pressure
【摘要】 某氰化尾渣浮选精矿采用超细磨-氰化方法处理,在<37μm占99.5%的磨矿细度下浸出24h,金的浸出率仅有1.80%,极难浸出。采用常温常压碱浸强化预氧化工艺处理后,在NaCN用量6kg/t、氰化时间24h的条件下,金的浸出回收率提高到85.82%,炭吸附率99.66%。
【Abstract】 The floatation concentrate of cyanidation tailings was very refractory.For example the dissolution of gold by NaCN for leaching 24h for cyanidation tailings under the grinding size of <37μm of 99.5% was only 1.80%.After the pretreatment of intensified alkaline leaching under normal temperature and pressure,the dissolution of gold is raised to 85.82% with the cyanide consumption of 6 kg/t,and the adsorption recovery by activated charcoal is 99.66%.
【关键词】 湿法冶金;
氰化尾渣;
难浸金精矿;
常温常压;
碱浸预处理;
【Key words】 hydro-metallurgy; cyanidation tailings; refractory gold floatation concentrate; normal temperature and pressure; alkaline pretreatment;
【Key words】 hydro-metallurgy; cyanidation tailings; refractory gold floatation concentrate; normal temperature and pressure; alkaline pretreatment;
- 【文献出处】 贵金属 ,Precious Metals , 编辑部邮箱 ,2007年01期
- 【分类号】TF831
- 【被引频次】13
- 【下载频次】283