英国一家公司发明了一种从铅中提取贵重金属的新方法———“下部吹氧法”。采用这种方法 ,可以节省能源消耗成本 6 0 %以上 ,还可实现工艺过程的高速化。传统的提取方法“吹灰法” ,是往熔融金属的表面吹入空气流 ,使铅氧化。由于银不会被氧化 ,因而可去除铅渣层 ,得到纯度 99 A British company invented a new method of extracting precious metals from lead - the “lower oxygen blowing method.” With this method, you can save energy costs over 60%, but also to achieve high-speed process. The traditional extraction method “soot-blowing” is to blow air flow to the surface of the molten metal to oxidize the lead. As the silver will not be oxidized, which can remove the lead slag layer, to be 99 purity