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Waelz rotary kiln for mining machinery

Waelz technology is volatilization of non-ferrous metals like Zn, Pb, Cd etc. out of an oxidized solid mixture by means of reduction by coke breeze in a rotary kiln without generating a liquid slag. Nevertheless, the Waelz process is considered to be the best available technology (BAT) for processing zinc/lead-containing dusts and wastes

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