摘要
鑫汇金矿矿石为多金属硫化矿,同时含有一定的碳,采用浮选—金精矿氰化—锌粉置换—金泥湿法冶炼工艺流程,由于精矿中杂质含量较高,加上碳的"劫金效应",金浸出较为困难。为提高矿石金回收率,在前期小型试验的基础上,经过充分论证,从2013年7月开始,在氰化生产流程中进行了历时6个月的GOLDOXTM纯氧浸出工业试验研究。从工业试验前后主要生产指标对比来看,氰渣中金品位降低了0.20×10-6,每年可增加经济效益80.8万元。该项研究成果对同类性质的黄金矿山企业具有一定的借鉴意义,将对纯氧浸出工艺在我国黄金行业的应用起到良好的示范和推动作用。
The gold ore of Shandong Gold Mining（Xinhui） was refractory ore,which was containing polymetallic sulfides ore and a certain amount of carbon.The dressing and smelting process is floatation,gold concentrate cyanidation,zinc dust replacement and gold mud hydrometallurgical process,but gold leaching is difficult dued to the high content of impurities concentrate and carbon robbing effect.In order to improve gold recovery, GOLDOXTM hydrometallurgy process was studied by bench scale test and 6 month plant scale test was conducted since July,2013.It was shown the process promoted leaching kinetics and improved gold recovery.The residue gold grade reduced 0.20 g/t in average after pure oxygen was applied. It means operating profit increase 808 000 Yuan per year in the plant.This would not only provide a successful example of oxygen leaching process,but also promote the high effective oxygen application in the Chinese gold industry.
出处
《黄金科学技术》
CSCD
2014年第6期82-86,共5页
Gold Science and Technology
关键词
工业纯氧
金回收率
浸出速率
含碳金精矿
多金属硫化矿
pure oxygen
leaching kinetics
gold recovery
gold concentrate containing carbon
polymetallic sulfide ore
