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銅鉛锍(鉛冰銅)是鉛鼓风炉的副产品之一,其中不仅含有較多的金属鉛和銀,还含有金。鉛精矿中的銅有75％以上均进入銅鉛锍中。为了回收其中的銅、鉛、貴金属和硫等有价元素,在現代化的炼鉛厂里,一般都采用轉炉吹炼进行处理。由于鉛精矿含銅少,一般不到1%,产出的銅鉛锍含銅只有2.8—11.2%,采用轉炉吹炼不能直接得到粗銅,因此,必須先用鼓风炉对銅鉛锍进行一次富集銅的熔炼,先回收其中的大部分鉛,从而使銅鉛锍中的含銅品位相对地提高。在进行富集熔炼以前,需将銅鉛锍进行焙烧脫硫,烧結成块。焙烧料的配料計算載于附表中。
Copper lead matte (lead matte) is one of the byproducts of lead blast furnaces, which contains not only more metallic lead and silver but also gold. More than 75% of the copper in the lead concentrate enters the copper-lead-matte. In order to recover the copper, lead, precious metals and sulfur and other valuable elements, in the modern smelting plant, the general use of converter blowing for processing. As lead concentrate contains less copper, generally less than 1%, the output of copper and lead matte copper is only 2.8-11.2%, the use of converter can not be blown copper directly, therefore, must first blast furnace copper lead matte once Copper-rich smelting, which first recovered most of the lead, so that the copper-lead matte copper grade relatively improved. Before conducting enrichment melting, copper-lead-sulfonium needs to be roasted and desulphurized and sintered into blocks. Calculations of roasting materials are given in the attached table.