目前,由于世界对金属的需求量不断增长,原料缺乏,金属品位日益贫化,生产排放出来的废料堆积如山,占用大量土地,破坏环境,许多国家立法提出严格的环境保护要求。国外许多矿山冶金企业日益重视废料的综合利用问题。这里所指的废料是指矿山露天开采剥离下来的废石、地下掘进的废石、选矿厂的尾矿和前人处理所留下的老尾矿、冶金工厂的废渣和钢渣、热电站的炉灰渣和飘灰渣等等。在目前的技术水平下,综合利用废料是可行的,在 At present, due to the increasing demand for metals in the world, the lack of raw materials, the worsening of the grade of metals, the accumulation of waste generated from production, the occupation of a large amount of land and the destruction of the environment, many countries have put forth strict environmental protection requirements. Many foreign mining metallurgical enterprises have paid increasing attention to the comprehensive utilization of waste materials. Refers to here refers to the mining of waste rock mined out of the open pit mining, underground tunneling waste rock, ore dressing plant tailings and left behind by the old tailings, metallurgical plant waste and slag, thermal power plant furnace Ash and floating ash and so on. In the current state of the art, it is feasible to comprehensively utilize waste material