黄铁矿伴生金回收研究进展

Research Progress in Recovery of Gold Associated with Pyrite

黄铁矿是一种重要的载金矿物,是国内金产量的重要来源,但伴生在黄铁矿中的金粒度细、结构复杂,回收难度较大。综述了黄铁矿伴生金的工艺矿物学特征,以及常见的黄铁矿伴生金物理选矿方法和化学选矿方法的研究进展。分析了各提金方法的原理及其在黄铁矿伴生金回收中的应用,从工艺成本、环境危害程度和浸金效率等方面讨论了各方法的优势和弊端,指出针对难处理黄铁矿中的伴生金,有效的矿石预处理工艺以改变矿物表面形貌及高选择性的助浸剂以提高金的浸出效率将是未来的研究方向。

Pyrite is one of the most important minerals bearing gold,and also the major resource of the gold production in China. However,the gold associated with pyrite is reported to be finely disseminated in complex structure, resulting in great recovering difficulty. This article reviews the mineralogical characteristics of gold associated with pyrite,and the research progress of common physical and chemical beneficiation processes for it. The principle of each gold extraction method and its applications in the recovery of gold associated with pyrite were illuminated,the merits and demerits of each method were discussed as well from the aspects of process cost,environmental hazard and gold leaching efficiency,etc. It is pointed out that,for refractory gold associated with pyrite,developing effective pretreatment process and highly selective leaching aids will be the future research directions to improve the gold leaching efficiency.