俄罗斯国家有色金属研究所发明了一种利用矿渣提取金属的新方法。在矿渣中含有不少的金属，如铜、锌、铅、镍和镉等。过去提取这些金属的方法，是把矿渣放回电炉中重新熔化，这种方法效率低，时间长。如果在熔化的矿渣中加入还原剂，那么整个过程就可加快５～１０倍。为此，通 Russia’s National Institute of Nonferrous Metal invented a new method for extracting metals from slag. In the slag contains many metals, such as copper, zinc, lead, nickel and cadmium. In the past, these metals were extracted by returning the slag to an electric furnace for remelting. This method is inefficient and takes a long time. If you add a reducing agent in the molten slag, then the whole process can be accelerated 5 to 10 times. To this end, pass