Click for an interactive blast furnace worksheet. Iron ore often comes buried in sand and rock, commonly known as silica silicon dioxide. This is the main impurity and is a solid at the furnace temperature, hence we need to remove it before it blocks up the furnace. Silicon dioxide will react with the calcium oxide to form calcium silicate, known as slag. The equation is given below. Germanium of very high purity is obtained by KEAM In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with : JEE Main Which one of the following set of metals deposits an anode mud during the process of electrolytic refining of copper?
AMU Calamine, malachite, magnetite and cryolite, respectively, are JEE Advanced Which of the following compounds is known as copper glance? Chemistry Most Viewed Questions. Identify a molecule which does not exist. In the extraction of iron, a basic flux limestone is used. Limestone decomposes to form CaO which reacts with silica gangue present in the iron ore is acidic in nature to form calcium silicate slag.
The main uses of limestone in iron and steel industry are i as a fluxing material, and ii other usage which consists of desulphurizing agent, coating of moulds of pig casting machine, neutralizing of acidic water, water treatment, waste water effluent treatment, flue gas treatment, and sludge and sewage treatment.
Limestone has numerous uses: as a building material, an essential component of concrete Portland cement , as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, as a chemical feedstock for the production of lime, as a soil conditioner, and as a popular decorative ….
Limestone and lime are used to make iron ore pellets. An alternative raw material for the blast furnace is iron ore sinter. Limestone and lime added to the sinter react with impurities and balance the slag composition of pig iron production. In iron and steel Industry, limestone and dolomite are used both in ironmaking and steelmaking. Limestone and lime products are used as fluxing material both in ironmaking and in steelmaking. Further lime from limestone reacts with the S present in the raw materials to form calcium sulphide CaS which goes into slag.
Limestone is usually gray, but it may also be white, yellow or brown. It is a soft rock and is easily scratched. It will effervesce readily in any common acid. Calcium carbonate is good for strong, healthy teeth.
Many toothpaste manufacturers use limestone in their toothpaste. Most toothpaste includes abrasives, binders, foaming agents, detergents, including limestone. Toothpaste companies also use limestone in their toothpaste to give it its white color. This could be harmful for health, and could even cause fatal diseases in some cases.
Limestone is a rock with a variety of uses. Most limestone is crushed and used as a construction material. Is limestone expensive?
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