Pyrites analyzing 81% FeS2 and 19% gangue is burned in excess air to produce a burner gas with an Orsat analysis of 5.84% SO2, 9.72% O2 and 84.44% Na. Analysis of the cinder shows 8.29% unburned FeS2...

Take basis as 100 kmol of BG.

Extracted text: Pyrites analyzing 81% FeS2 and 19% gangue is burned in excess air to produce a burner gas with an Orsat analysis of 5.84% SO2, 9.72% O2 and 84.44% Na. Analysis of the cinder shows 8.29% unburned FeS2 and 3.81% SO3. The gases from the burner are cooled and made to come into contact with Milk of Lime in an absorption tower. The dolomitic lime used is 82% CaO, 16% MgO and 2% inerts. The bisulfite liquor produced contains 7.05% total SO2 of which 1.15% is "free" and the rest 5.9% being present as bisulfites. An analysis of the dry waste gas shows that it contains only O2 and N2. Assuming no further oxidation of SO2 to SOs and formation of H,SO. in the tower. Calculate: a. kg pyrites/ kmol of BG b. kg of SO3 in cinder/ kmol of BG c. kg of bisulfite liquor/ kg of pyrite d. kg of lime/ kmol of BG e. kg of water for slaking/ kmol of BG