Question

(a) Name the methods by which concentrated ore is converted to metallic oxide.

(b) State three objectives achieved during the roasting of ores.

Answer 1

(a)
i). Calcination, ii). Roasting

(b)

Three objectives achieved during the roasting of ores is:

1. It removes moisture from ores.
2. It makes the ore porous and more reactive.
3. It expels volatile impurities.
4. It convertssulphideores into oxides.