Exercise v

The copper ore contains  and . The copper mineral is chalcopyrite  and S is also present as iron pyrite. The rest of the ore is gangue containing no  or Fe.

The ore is roasted until all the sulphur is removed; the following reactions are taking place:

 


 
Required: for 100kg of ore

a) weight of each mineral and the gangue

b) Oxygen required in cubic meter c) cubic meter of air d) weight of  and vol of  

 

S in

S in .

S combined with .

Amount of

Wt of

Amount of mineral :  and

Amount of gangue :                   

 Moles of O₂

Actual volume of

• Volume of
• Wt of , and vol. of Ans.