摘要
某含金1.85 g/t的汞冶炼渣中金主要以游离微细金和硫化物包裹金的形式存在,对该二次资源进行了浮选回收金的试验研究。结果表明,在磨矿细度为-0.074 mm占80%的情况下,采用1粗2精2扫、中矿顺序返回流程处理该试样,可以获得金品位为28.65 g/t、回收率为68.45%的金精矿,导致金回收率不高的主要原因是金颗粒微细和被碳酸盐、褐铁矿、石英和硅酸盐等矿物包裹。
Gold exists in the form of free fine gold and gold-wrapped sulfide in mercury smelting slag with gold bearing of 1.85 g/t. Research on recovering gold by flotation from the secondary resources was carried out. The research results showed that under grinding fineness of - 0. 074 mm 80% , gold concentrate with gold grade of 28.65 g/t, and recovery of 68.45% was obtained by the flow sheet of one-roughing,two-cleaning,three-scavenging and middles back to the process in order. The main reasons resulting in low gold recovery are that gold occurs in ultra-fine particles or was wrapped by carbonates, limonite, quartz and silicate.
出处
《金属矿山》
CAS
北大核心
2013年第1期155-157,共3页
Metal Mine
关键词
含金汞冶炼渣
游离微细金
硫化矿包裹金
二次资源
Gold-bearing mercury sinelting slay, Freefine gold, Gold-wrapped sulfide, Secondary resources
