摘要
采用酸浸—氰化工艺从某沸腾焙烧烟灰中浸出金、银、铜.结果表明,较优工艺为：酸浸硫酸浓度1.0 mol/L,液固比4∶1,反应温度90℃,反应时间4h,搅拌速度300 r/min;氰化浸出反应液固比3∶1,氰化钠浓度0.2％,pH 10～11,反应时间48 h,搅拌速度300 r/min.此条件下,金、银、铜的浸出率分别为97.16％、79.98％、96.04％.
Gold,silver and copper were leached from fluidized-bed roasting ash by sulfuric acid leaching-cyaniding leaching process.The results show that the leaching rate of gold,silver and copper is 97.16%,79.98% and 96.04 % respectively under the following optimal conditions including sulfuric acid concentration of 1.0 mol/L,ratio of liquid to solid of 4 ∶ 1,temperature of 90 ℃,reaction time of 4 h and stirring speed of 300 r/min as well as ratio of liquid to solid of 3 ∶ 1,sodium cyanide concentration of 0.2%,pH value of 10～ 11,reaction time of 48 h and stirring speed of 300 r/min in cyaniding leaching.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2014年第3期25-28,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51164011)
福建省区域科技重大合作项目(2011H4025)
关键词
酸浸
氰化浸出
沸腾焙烧烟灰
金
银
铜
acid leaching
cyaniding leaching
fluidized-bed roasting ash
gold
silver
copper
