short notes on steel industry class 8
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Iron industry is a feeder industry which provides raw materials to various other industries. The process involves conversion of iron ore into steel. It is done in many stages. First of all, the raw material is put in a blast furnace for smelting. Iron is refined after smelting and made into steel. For making 1 tonne of steel, 4 tonne of iron ore is mixed with 1 tonne of limestone and 8 tonne of coal is used as fuel. Steel is also called the backbone of modern industry. Almost everything used by us is either made up of steel or is made by machines which are made up of steel. Various items; right from an awl pin to a huge ship are made of steel.
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