西秦岭某金矿床矿石特征及可选性研究

Ore Characteristics and Feasibility of a Gold Deposit in Western Qinling

西秦岭地区是我国金矿床分布的主要集中区,矿床类型主要有石英脉型及构造蚀变岩型。对位于西秦岭某金矿床矿石特征及矿石的可选性进行研究表明,该金矿床类型为石英脉型,金多以粒间金和裂隙金存在于黄铁矿中,以微细粒为主,载金矿物主要为黄铁矿。在混合样研究的基础上,分别采用重选—炭浸联合流程、原矿炭浸流程两种方法进行条件试验。表明该矿为易选矿石,重选—炭浸联合流程金回收率为95.03%,推荐其作为该金矿床矿石的选矿工艺方法。

Western Qinling area is the mainly region where gold deposits occur densely in China,the gold deposit types mainly there are structure zone altered rock type and quartz-vein type. This paper study ore characteristic and ore washability of a certain gold deposit in Western Qinling,which belongs to quartz-vein type. It existed mainly as intergranular gold and crack gold in pyrite,gold granularity belongs to micro-fine particle,gold-carrier is pyrite. On the basis of vast discuss study of ore mixture sample,the condition test were adopted the process of gravitg separationcarbon leaching unite test flowsheet and raw ore carbon leaching test flowsheet. The experiments showed gold ore belongs to easy beneficiation type,the recovery ratio of gravitg separation-carbon leaching unite test flowsheet is95. 03%,which is suggested as the gold deposit beneficiation method.