Cement clinker
Main component of Portland cement / From Wikipedia, the free encyclopedia
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Not to be confused with Clinker (waste), which is also used in cement products like Clinker blocks.
For other uses, see Clinker.
Cement clinker is a solid material produced in the manufacture of portland cement as an intermediary product. Clinker occurs as lumps or nodules, usually 3 millimetres (0.12 in) to 25 millimetres (0.98 in) in diameter. It is produced by sintering (fusing together without melting to the point of liquefaction) limestone and aluminosilicate materials such as clay during the cement kiln stage.[1][2]