摘要
智利某矿山选矿厂产出的含砷铜金精矿采用单一直接氰化法处理,金、银浸出率分别为83.86%、76.19%,且铜不能有效回收;采用焙烧—酸浸—氰化浸出,金、银浸出率分别为94.20%、81.98%,铜浸出率为83.38%,金、银、铜回收效果还有待提高。经系统试验,最终确定采用强化氰化浸出金、银—氰化尾渣浮选回收铜—浮选尾矿两段焙烧—焙烧渣酸浸回收铜—酸浸渣氰化浸出金、银工艺流程,金、银、铜综合回收率分别达到98.95%、97.90%、92.41%,实现了难处理含砷铜金精矿中有价元素的高效综合回收,可为该类型金精矿资源的分选回收提供借鉴。
The arsenic-bearing copper-gold concentrate produced by the beneficiation plant of a Chilean mine was treated using a single direct cyanidation method,with gold and silver leaching rates of 83.86% and 76.19%,respectively,while copper could not be effectively recovered.The use of roasting-acid leaching-cyanidation resulted in gold and silver leaching rates of 94.20% and 81.98%,respectively,and a copper leaching rate of 83.38%.However,the recovery of gold,silver,and copper still needs to be improved.Through systematic experiments,the process flow is finalized,which involves enhanced cyanide leaching for gold and silver,flotation recovery of copper from cyanide tailings,two-stage roasting,acid leaching to recover copper,and cyanide leaching of acid leaching residues for gold and silver.The comprehensive recovery rates for gold,silver,and copper reach 98.95%,97.90%,and 92.41%,respectively.This process achieves efficient comprehensive recovery of valuable elements from difficult-to-process arsenic-bearing copper-gold concentrates and can serve as a reference for the sorting and recovery of such types of gold concentrates.
作者
王建军
邵京明
郭建东
薛希刚
李少梅
张玉超
Wang Jianjun;Shao Jingming;Guo Jiandong;Xue Xigang;Li Shaomei;Zhang Yuchao(Shandong Guoda Gold Co.,Ltd.)
出处
《黄金》
2025年第12期68-72,共5页
Gold
基金
山东省重点研发计划(重大科技创新工程)项目(2023CXGC010903)。
关键词
含砷铜金精矿
强化氰化浸出
浮选
两段焙烧
酸浸
综合回收
arsenic-bearing copper-gold concentrate
enhanced cyanide leaching
flotation
two-stage roasting
acid leaching
comprehensive recovery
