Page 5 - 2. Lesson note - Ch-3 Concept mapping

STEPS OF EXTRACTION

Concentration of the ore to
remove impurities from the
ORE. (removal of gangue)

Moderately reactive
Highly reactive Less reactive
metal ores
metal ores metal ores.
Eg-NaCl, Al O Eg- Carbonate & Eg- HgS, Cu S
2 3
Sulphide Ores of Zn, Fe, 2
Pb

Sulphide ores-
Roasting

Carbonate
Ores- Sulphide ores Oxide of
Calcination -Roasting metals

Electrolysis
of molten Oxide of Self Reduction
ore. metal ores by only
heating

Reduction using
Carbon /more Refining of the
reactive metal as impure metal.
reducing agent. Eg- Electrolytic

refining of
impure metal
Refining of the
impure metal.
Pure Metal Eg- Electrolytic
refining of
impure metal.

Flow Chart of Text Book-

5