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Sphalerite blende: The mineral sphalerite information and ...

Sphalerite blende: The mineral sphalerite information and ...

16-1. Roasting of Iron 1 An iron 85.0% FeS 2 and 15.0% gangue inert dirt, rock, etc. is roasted with an amunt equal to 200% excess air according to the reaction 4 FeS 2 + 11 O 2 =====> 2 Fe 2 O 3 + 8 SO 2 in order to produce SO 2. All the gangue plus the Fe 2 O 3 and unreacted FeS 2 end up in the solid waste

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