随着国民经济的发展 ,矿产资源的需求量不断增大 ,致使在采矿和选矿过程中形成的人工矿床——尾矿的数量逐年增多 ,给环境带来不利的影响。排入大气的污染物种类越来越多 ,它们协同作用产生新的污染 ,例如光化烟雾、酸雨的污染 ,及全球温室效应等都日趋严重 ,已经引起各国的关? With the development of the national economy, the demand for mineral resources has been increasing. As a result, the number of man-made deposits - the tailings - that have formed during the mining and beneficiation process has been increasing year by year, adversely affecting the environment. As more and more pollutants are released into the atmosphere, new synergies such as photochemical smog, acid rain pollution and global warming are becoming more and more serious.