由于稀贵金属特殊的物理和化学性能,已成为电子元器件中不可缺少的成分.然而随着电子工业的发展,大量寿命已到的印刷线路板已开始报废.印刷线路板材料构成复杂,若不及时有效的分离处理,不仅造成严重的环境污染,还导致大量宝贵资源的浪费.发达国家采用物理的或化学的方法对稀贵金属进行回收,积累了一些经验,而我国还几乎是空白.实践证明,先用物理方法进行稀贵金属的富集,然后进行冶炼提纯比较有效.
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