某硫精矿焙烧—氰化回收金试验研究  

Study on the gold recovery from sulfur concentrates by roasting-cyanidation gold leaching process

作　　者：邓莉莉[1] 

机构地区：[1]紫金矿业集团股份有限公司

出　　处：《黄金》2015年第9期64-67,共4页Gold

摘　　要：某硫精矿中含铁42.3%、有效硫47.34%、金0.72 g/t,对其进行了焙烧—氰化浸金试验研究。其结果表明:在750℃下焙烧2 h,获得含铁61.42%、金品位1.04 g/t的焙砂;在硝酸铅添加量为300 g/t条件下,对该焙砂进行氰化浸金时,浸渣金品位可降低至0.33 g/t,金浸出率可达68.27%。Roasting-cyanidation gold leaching process is carried out toward a sulfur concentrate with iron grade of 42. 3 %,effective sulfur 47. 34 % and gold 0. 72 g / t. The result is that： roasting with the temperature of 750 ℃ for two hours obtains calcine with 61. 42 % iron and 1. 04 g / t gold; The gold grade of cyanide slag can be reduced to0. 33 g / t and gold leaching rate can reach 68. 27 %,when the cyanide leaching of gold from the calcine with 300 g / t lead nitrate added.

关 键 词：硫精矿 焙烧 氰化 综合回收 

分 类 号：TD953[矿业工程—选矿]