黄铜矿的湿法冶金工艺研究进展

介绍了黄铜矿湿法冶金的最新进展及工艺特性，探讨了黄铜矿湿法冶金的发展前景。Dynatec加煤粉流程和CESL二段浸出流程很好地解决了中温压力氧化酸浸过程中单质硫的影响，对材质的耐腐蚀性要求低，在低能耗下获得了高的浸出效果，对于主要分布于黄铜矿中的含金铜精矿，可获得很高的金回收率。Intec和Hydro Copper工艺在常压低温氯化介质中很好地浸出黄铜矿精矿，并能同时回收伴生的贵金属．生产的中间产品铜粉可直接加工高附加值产品，能耗低，回收率高，是复杂铜精矿湿法冶金的途径．Geocoat工艺的诞生使得高品位黄铜矿精矿大规模高温细菌氧化浸出成为现实，它克服了细菌浸出对设备要求高的缺点，利用堆浸的优势，以低的运行成本获取高的黄铜矿浸出率。

Progress in Chalcopyrite Hydrometallurgy Process

Chalcopyrite is main copper resources and its leaching process is a key step in hydrometallurgy of copper sulfide ores. The hydrometallurgical processes investigations for chalcopyrite ores are reviewed, and the features of the pressure leaching process, the chloride leaching process, the bioleaching process are described. The potential application of hydrometallurgy processes for chalcopyrite ores are discussed. The influence of elemental sulphur was effectively resolved by Dynatec process adding coal powder and CESL process with two step leaching during moderate temperature pressure leaching process, which could get higher metal leaching recovery with lower energy consume and equipment corrosion, adapt especially to gold contained copper sulfide concentrate. For Intec process and Hydro Copper process, chalcopyrite could be leached in the chlorine medium at atmosphere pressure and moderate temperature, the middle product, copper powder, could be processed further into higher value copper product with low energy consume and high recovery, they were effective hydrometallurgy process of the complicated copper sulfide concentrate. Geocoat process made it possible to economically bioleach chalcopyrite concertrate at commercial scale with the moderate thermophiles and the extreme thermophiles, it took an advantage of heap leaching, got high leaching recovery for chalcopyrite with low operation cost.