难处理金矿焙砂氯化挥发提金试验研究  

CHLORIDE VOLATILIZATION STUDY ON GOLD RECOVERING FROM CALCINE OF REFRACTORY GOLD ORE

作　　者：郭持皓[1] 袁朝新[1] 刘大学[1] 胡磊[1] 

机构地区：[1]北京矿冶研究总院,北京100160

出　　处：《矿冶》2016年第3期37-40,共4页Mining And Metallurgy

基　　金：国家高技术研究发展计划(863计划)项目(2011AA06A104)

摘　　要：采用高温氯化挥发法对难处理金矿的焙砂进行提金试验研究,试验考察了氯化温度、氯化时间、氯化剂添加量和干球强度的影响因素。研究结果表明,在氯化温度1150℃、氯化时间1 h、Ca Cl2添加量5%的条件下,金、银的挥发率分别达到98%、60%,而且Si O2、Al2O3、Ca O、Mg O和铁等几乎不挥发,实现金、银等有价元素与脉石分离。根据试验结果,提出一种难处理金矿的焙砂氯化挥发提金新工艺。A test of pelletizing-chloride volatilizing was performed on calcine of a refractory gold ore and factors effecting gold volatilization rate and pellet strength were investigated. The test results indicated that under optimum conditions as： roasting temperature 1150 ℃, roasting time 1 h, CaCl2 addition rate 5% , volatilization rate of gold and silver can reach around 98% and 60% respectively while iron and gangue components of SiO2, Al2O3, CaO and MgO basically remain in fired pellet. Based on the result, a new process of recovering gold from calcine of refractory gold ore by chloride volatilization was developed.

关 键 词：难处理金矿 焙砂 氯化挥发 造球 无氰 

分 类 号：TF831[冶金工程—有色金属冶金]