摘要
某难处理含锑金精矿含金43.70 g/t、锑15.60%,直接采用氧化焙烧—氰化浸出工艺处理,金浸出率仅为82.42%,且有价金属锑未得到有效回收。通过试验研究,确定采用含锑金精矿浮选—浮选尾矿碱浸—浸锑尾渣两段焙烧—焙烧渣氰化浸出—烟气制酸工艺流程;浮选获得金品位32.00 g/t、锑品位41.50%,金、锑回收率分别为23.98%、87.12%的锑精矿;浮选尾矿碱浸锑浸出率为96.17%;金、锑总回收率分别达到97.69%和99.51%,实现了难处理含锑金精矿资源有价元素金、锑的高效综合回收。
A certain refractory gold concentrate containing antimony,with 43.70 g/t gold and 15.60%antimony,was directly treated using an oxidative roasting-cyanidation leaching process,yielding a gold leaching rate of only 82.42%,and the valuable metal antimony was not effectively recovered.Through experimental research,an optimized process was established comprising flotation of the antimony‑bearing gold concentrate,alkaline leaching of the flotation tailings,two‑stage roasting of the antimony leaching residue,cyanidation leaching of the roasted residue,and acid production from flue gas.The flotation yielded an antimony concentrate with 32.00 g/t gold and 41.50%antimony,achieving recovery rates of 23.98%for gold and 87.12%for antimony.The antimony leaching rate from flotation tailings reached 96.17%.The overall recovery rates of gold and antimony were 97.69%and 99.51%,respectively,realizing the efficient comprehensive recovery of valuable metals,including gold and antimony,from refractory gold concentrate containing antimony.
作者
孙仁锋
邵京明
李少梅
郭建东
薛希刚
Sun Renfeng;Shao Jingming;Li Shaomei;Guo Jiandong;Xue Xigang(Shandong Guoda Gold Co.,Ltd.)
出处
《黄金》
2025年第8期43-48,共6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
含锑金精矿
氧化焙烧
氰化
浮选
锑精矿
碱浸
综合回收
gold concentrate containing antimony
oxidative roasting
cyanidation
flotation
antimony concentrate
alkaline leaching
comprehensive recovery
