摘要
含金滤液分别通过中和沉淀、硫化沉淀、铁粉置换三种工艺回收其中的金、银及其他有价金属。探索试验结果表明,中和沉淀法由于渣量大、渣中金属品位低的原因,不适于直接处理含金滤液。硫化沉淀法由于硫化钠耗量大,同时产生大量硫化氢气体也不适用。含金滤液采用铁粉置换工艺进行处理,铁粉耗量少(7 g/L),渣中金属品位高,金、银、铜分别达到370.8 g/t、4230.5 g/t和25%,此工艺适合含金滤液中金、银、铜的回收。
The Au,Ag and other valuable metals in gold-containing filtrate were recovered by lime neutralization,sulfide precipitation and iron replacement methods.The exploratory research results indicate that lime neutralization and sulfide precipitation methods were not applicable for recovery from gold-containing filtrate,because of heavy precipitate and the low-grade of metals in precipitate in the neutralization process,and a lot of sodium sulfide consumed and H2 S produced in the sulfide precipitation process.The gold-containing filtrate is treated by the iron replacement method.When the iron addition was 7 g/L,the contents of Au,Ag and Cu in cementation produced in iron replacement process were 370.8 g/t,4 230.5 g/t and 25%,respectively.Therefore the process could be used for recovering Au,Ag and other metals from gold-containing filtrate.
出处
《矿冶》
CAS
2017年第1期54-56,共3页
Mining And Metallurgy
关键词
氯化焙烧
含金滤液
石灰中和
硫化反应
铁粉置换
chloridizing roasting
gold-containing filtrate
lime neutralization
sulfide precipitation
iron replacement
