What typically supplies the heat in roasting of sulfide ores?
ADissolving the ore in acid
BReduction of the metal oxide
COxidation of sulfide to SO2
DCooling of the slag layer
Answer & Solution
Correct answer: C. Oxidation of sulfide to SO2
Oxidising sulfide to SO2 is exothermic, so it helps sustain the high temperature of the process.
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