Minerals are naturally-occurring inorganic substances with a definite and predictable chemical composition and physical properties.

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Presentation transcript:

Minerals are naturally-occurring inorganic substances with a definite and predictable chemical composition and physical properties

Metallic Ferrous Non-ferrous Precious Non-metallic Energy Minerals

CLASSIFICATION OF MINERALS METALLICENERGY NON - METALLIC FERROUS PRECIOUS NON - FERROUS

Ferrous – Iron Ore, Manganese, Nickel, Cobalt Non-ferrous – Copper, Lead, Tin, Bauxite Precious – Gold, Silver, Platinum Non-metallic – Mica, Salt, Potash, Sulphur Energy Minerals – Coal, Petroleum, Natural Gas

A mineral or an aggregate of minerals from which a valuable constituent, especially a metal, can be profitably mined or extracted

All Minerals are Ore but All Ore are not Minerals

OCCURANCE OF MINERALS Minerals generally occur in the form: 1.Igneous and Metamorphic rocks 2.Sedimentary rocks 3.Decomposition of surface rocks

IRON Iron Ore is the basic mineral and is the backbone of Industrial development. Magnetite is the finest iron ore with a very high content of iron. Hematite ore is the most important industrial iron ore.

Metallurgy of Iron Iron is found in great abundance in nature. It is highly reactive and is hardly available in free state. Iron exists in the combined form in nature in various minerals among which oxide and sulphide ores of iron are vastly used.

Most common Ores of Iron HematiteFe 2 O 3 LimoniteFe 2 O 3.3H 2 O MagnetiteFe 3 O 4 SideriteFeCO 3 Iron pyriteFeS 2 Copper pyrite CuFeS 2

METALLURGY Dressing of ore pulverization Concentration of ore removal of moisture, volatile impurities converting sulphur, phosphorus into their oxides converting ferrous to ferric oxide Reduction of ore smelting

BLAST FURNACE

Manganese Manganese is mainly used in the manufacturing of steel and ferro-manganese alloy, bleaching powder, insecticides and paints. Orissa is the largest producer of manganese ores in India accounting for one-third of the total production.

ORES OF MANGANEESE Pyrolusite MnO 2 Hausmannite Mn 2+ Mn 3+ 2 O 4 Rhodochrosite MnCO 3

Metallurgy of manganese Dressing of ore pulverization Extraction Thermite Reaction

Thermite reaction

Thank You