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自从上一世纪有了氰化浸出技术以来,大大提高了贵金属的产量和矿石的开发利用.但是氰化物的选择能力差,因而加速了代用药剂的研究,其中只有硫脲成为技术上适用的药剂.然而这种药剂的高消耗量和金银回收率的不稳定,妨碍了它的大规模应用.有一种流程,经证实可以妥善地解决这些问题,即在浸出矿浆中加入SO_2,并用硫脲洗涤浸渣.今后的发展目标就是炭浆技术.人类从六千年前发现黄金以来,到现在估计已生产十万吨黄金,其中80%是上一世纪生产的.这种生产速度的提高可能产生于:
Since the last century with cyanide leaching technology has greatly increased the production of precious metals and ore development and utilization.But cyanide selectivity is poor, thus accelerating the study of alternative agents, of which only thiourea into a technically applicable agent However, the high consumption of such agents and the unstable recovery of gold and silver hindered their large-scale application, and there was a process that proved to be a proper solution to these problems by adding SO 2 to the leached slurry and treating it with thiourea Washing residue. The future development goal is the carbon pulp technology .Human since gold was discovered six thousand years ago, it is now estimated that 100,000 tons of gold have been produced, of which 80% was produced in the last century, this increase in production speed may produced in: