Write a short note on uses and classification of coal
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Classification of Coal
Coal can be classified into the following types according to the composition and stage of formation:
Peat (the first stage with 30 per cent carbon content).Lignite or Brown Coal (the second stage with 30 per cent to 40 per cent carbon content).Bituminous Coal (the third stage with 40 per cent to 80 per cent carbon content),Anthracite (the fourth stage with 90 per cent Carbon content) andGraphite (probably the last stage with 99 per cent carbon content and can never be used as a fuel).
Uses of Coal
Coal is a versatile mineral.It is the most important source of power in India.It is used in thermal generators to produce thermal power (electricity).It is used to provide heat and raise steam in a wide range of industrial situation.It can be used to make metallurgical coke for use in blast furnaces.It has the advantage of converting it into other forms like gas, electricity and even oil.Apart from its role as a source of fuel, coal provides a number of raw materials for the chemical industry, e.g. coal gas, coal tar, benzole, sulfate of ammonia and many others.Coal is still a very important domestic fuel.It gives by-products, such as, explosive, creosote, naphthalene, anthracene, plastics, detergents, dyes, antiseptics, adhesives, perfumes, synthetic fibres and fertilizers.
Coal can be classified into the following types according to the composition and stage of formation:
Peat (the first stage with 30 per cent carbon content).Lignite or Brown Coal (the second stage with 30 per cent to 40 per cent carbon content).Bituminous Coal (the third stage with 40 per cent to 80 per cent carbon content),Anthracite (the fourth stage with 90 per cent Carbon content) andGraphite (probably the last stage with 99 per cent carbon content and can never be used as a fuel).
Uses of Coal
Coal is a versatile mineral.It is the most important source of power in India.It is used in thermal generators to produce thermal power (electricity).It is used to provide heat and raise steam in a wide range of industrial situation.It can be used to make metallurgical coke for use in blast furnaces.It has the advantage of converting it into other forms like gas, electricity and even oil.Apart from its role as a source of fuel, coal provides a number of raw materials for the chemical industry, e.g. coal gas, coal tar, benzole, sulfate of ammonia and many others.Coal is still a very important domestic fuel.It gives by-products, such as, explosive, creosote, naphthalene, anthracene, plastics, detergents, dyes, antiseptics, adhesives, perfumes, synthetic fibres and fertilizers.
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Coal may be classified in rock types (or lithotypes) based on the presence of petrological components known as macerals.Thermal coal is used to produce electricity. Coking coal is used in the production of steel. Coal is also used make silicon metal which is used to produce silicones and silanes ....
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