Question

name the process that is used to concentrate sulphide ore describe briefly two stages that are involved in the conversion of concentrated sulphide ore into the corresponding metal

Answer 1

froth floatation process.
usage of pine oil and skimming the froth off

Answer 2

Answer: Froth floatation process.

Stages :

1) Roasting.

2)Reduction to the metal using carbon.

Explanation: Since it is for the concentration of the sulphide ores ( Removal of impurities from the sulphide ore), The process is froth floatation process. And since the concentrated ore is to be converted again to the corresponding metal , first it is to be converted into it's corresponding oxides using roasting (Heating of the concentrated ores in the presence of excess air) . Then again from the corresponding oxides it is to be converted into it's corresponding metal using coke or carbon.

Roasting :

2 ZnS + 3 O² -- -- 2 ZnO (s)+ 2 SO² (g)

Reduction : ZnO + C ---- Zn (s) + CO(g)

Thanks