Chemical Properties of Raw Material and Clinker _ English Version.
The raw material for cement is natural rock which contains oxides of calcium, silica, alumina and iron as a potential compound for cement.
Limestone is a cement raw material which contains of CaO in the range of 50%, SiO2 in the range of 6%, Al2O3 about 2%, and limestone is the most widely used, between 80 and 85% of the total raw materials.
The use of a mixture of clay raw materials ranges from 12 to 14%, depending on the value of the SiO2 content ranging from 93% and Al2O3 ranging from 18%.
Silica has SiO2 content above 90%, and the use of this Silica raw material mixture ranges from 2 to 4%.
Iron sand has Fe2O3 content above 65%, iron sand usage ranges from 2 to 3%.
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