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Cement Clinker

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In the manufacture of Portland cement clinker occurs as lumps or nodules, usually 3 millimetres (0.12 in) to 25 millimetres (0.98 in) in diameter, produced by sintering (fused together without melting to the point of liquification) limestone and alumino-silicate materials such as clay during the cement kiln stage. Clinker consists of various calcium silicates including alite and belite.
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In the manufacture of Portland cement clinker occurs as lumps or nodules, usually 3 millimetres (0.12 in) to 25 millimetres (0.98 in) in diameter, produced by sintering (fused together without melting to the point of liquification) limestone and alumino-silicate materials such as clay during the cement kiln stage. Clinker consists of various calcium silicates including alite and belite. Tricalcium aluminate and calcium aluminoferrite are other common components. These components are often generated in situ by heating various clays and limestone.[1] Portland cement clinker is made by heating a homogeneous mixture of raw materials in a rotary kiln at high temperature . The products of the chemical reaction aggregate together at their sintering temperature, about 1,450 °C (2,640 °F). Aluminium oxide and iron oxide are present only as a flux to reduce the sintering temperature and contribute little to the cement strength. For special cements, such as low heat (LH) and sulfate resistant (SR) types, it is necessary to limit the amount of tricalcium aluminate formed. The major raw material for the clinker-making is usually limestone mixed with a second material containing clay as source of alumino-silicate. Normally, an impure limestone which contains clay or silicon dioxide (SiO2) is used. The calcium carbonate (CaCO3) content of these limestones can be as low as 80%. Second raw materials (materials in the rawmix other than limestone) depend on the purity of the limestone. Some of the second raw materials used are: clay, shale, sand, iron ore, bauxite, fly ash and slag. The clinker surface and its reactions in different electrolytic solutions are investigated by scanning electron microscope and atomic force microscopy.[2]

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Cement Clinker

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Number of Employees26 to 50 People
Annual TurnoverRs. 5 - 10 Crore
IndiaMART Member SinceSep 2014
CNI is a global team of forward-thinking individuals that delivers immediate impact and growing advantage for its clients. We are passionate problem solvers who excel in collaborating across borders to co-create and realize elegantly simple, practical, and sustainable results.
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