由于对金矿资源的大量开发,金矿石品位逐渐降低,矿石成分越来越复杂,易选金日益减少,很难用常规的氰化法回收。众所周知,难选金通常都与含碳物质、金属硫化物密切共生,或与碲化物及这些矿物的共生体紧密结合。有的矿石只有其中一种情况,有的兼有几种情况,这将给处理该类矿石的工艺过程带来极大困维。 Due to the extensive exploitation of gold resources, the grade of gold ore is gradually reduced, the composition of ore is more and more complicated, the amount of easy-to-use gold is decreasing, and it is hard to be recovered by the conventional cyanidation method. It is well known that refractory gold is usually closely associated with carbonaceous materials and metal sulfides or with tellurides and the symbiosis of these minerals. There are only some of the ores in some cases, and some in some cases, which will bring great difficulties to the process of handling such ores.