Page 4 - 2. Lesson note - Ch-3 Concept mapping

E] Metallurgy-

Source of metals

Minerals- Naturally occuring substances on
the earth's crust which consists of elements
either in their compound or elemental forms.

Ores- Those minerals from which metals
can be extracted easily and profitable are
called ores.

Types of ores

Oxide Ores-
1. Haemitite- Sulphide Ores- Halide ores-
Fe O
2 3 1. Copper 1. Rock Salt-
2. Magnetite- glance-Cu S Carbonate NaCl
Fe O . 2 Ores- 1. Lime
3 4 2. Zinc Blend- stone-CaCO 2. Fluorospar-
3. Bauxite- ZnS 3 CaF
2. Calamine -
2
Al O .2H O 3. Cinnabar-HgS 3. Cryolite-
2 3
2
4. Cuprite- Cu O ZnCO 3
2 4. Iron pyrite- Na AlF 6
3
5. Pyrolusite- FeS
MnO 2
2

F] Extraction of Metals-

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