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目前,国外完善难选矿石处理工艺的有远景方向之一,是采用联合流程,这种联合流程包括机械选矿和处理产品的最有效的湿法冶金和火法冶金方法。对于脉石中有价矿物呈细粒嵌布而不适于机械选矿的矿石和不可能对其进行有选择性解离的矿石以及难处理的浮选精矿和中矿,处理这些物料,在各种联合流程中,应用最广泛的是与浮选相结合的湿法冶金中的浸出作业。
At present, one of the long-term prospects of improving refractory ore processing technology in foreign countries is to adopt a joint process that includes the most effective hydrometallurgical and pyrometallurgical methods for mechanical beneficiation and product processing. For the gangue minerals in a fine grain embedded cloth is not suitable for mechanical beneficiation of ore and can not be selectively dissociated ore and difficult to deal with the flotation concentrate and mineral processing of these materials, In the joint process, the most widely used is the leaching operation in hydrometallurgy combined with flotation.