摘要
某浮选尾矿中金、银品位分别高于2.5 g/t、100 g/t,具有回收利用价值。试验采用氧压预处理—氰化浸出进行回收,考察了氧压、温度、反应时间、液固比及添加剂等因素对金、银浸出率的影响。结果表明:在预处理氧压1.5~1.8 MPa、温度180℃~200℃、反应时间1.0 h、液固比3∶1的条件下,预处理后浮选尾矿氰化浸出金浸出率为81.77%,银浸出率为33.29%;添加剂的添加有利于提高银浸出率。该研究为浮选尾矿工业回收金、银提供技术参考。
The gold and silver grades in certain flotation tailings are higher than 2.5 g/t and 100 g/t respectively, making the tailings worth recovering.The experiment used oxygen pressure pretreatment-cyanidation leaching for recovery, and investigated the effect of oxygen pressure, temperature, reaction time, liquid-solid ratio and additives on gold and silver leaching rates.The results show that when the pretreatment oxygen pressure is 1.5-1.8 MPa, tempera-ture is 180 ℃-200 ℃,reaction time is 1.0 h and liquid-solid ratio is 3 ∶1,the gold cyanidation leaching rate of flotation tailings after pretreatment is 81.77 % and silver leaching rate is 33.29 %;the addition of additives is beneficial to improving silver leaching rate.The research can provide technical reference for industrial recovery of gold and silver from flotation tailings.
作者
白成庆
陈国兰
付绸琳
付高明
Bai Chengqing;Chen Guolan;Fu Choulin;Fu Gaoming(Hunan Shuikoushan Nonferrous Metals Group Co.,Ltd.)
出处
《黄金》
CAS
2021年第9期103-105,111,共4页
Gold
关键词
氧压预处理
氰化浸出
浮选尾矿
金回收
浸出率
oxygen pressure pretreatment
cyanidation leaching
flotation tailings
gold recovery
leaching rate
