PYROMETALLURGY
It involves heating of material at high temp.(100-3000 ºC) in kiln, furnace, roaster, dryer, smelter, converter.
The imp.processesare:
(1)Drying(T=100-150 ºC)
(2)Calcining(T=250-1000 ºC)
(3)Roasting(T=500-1100 ºC)
-Oxidising,Reducing,Chloridizing,Sulfatizing,Volatizing.
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(4)Agglomaration: sintering,pelletization,briquetting.
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(5)Smelting: reduction smelting & matt smelting.
(6)Distillation: M-comp. M…..(T >Tboiling)
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(7)Refining: Fire refining, Refining via.volatilecomp.,
Selective distillation, Zone refining.
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