Portland cement clinker

Details Portland cement clinker Portland cement clinker

C - Chemistry, Metallurgy

04

B

261/58

C04B 7/02 (2006.01)

Patent

CA 1153024

ABSTRACT OF THE DISCLOSURE A Portland cement clinker having a silica ratio of not more than 2.80 and comprising, as an integral set-regulating component, (a) sulphate, in the presence of alkali metal in the combined state, and/or (b) halogen in the combined state, the said set-regulating component being present in an amount suf- ficient to prevent premature setting of cement produced from said clinker. The preferred halogen is fluorine, which can be introduced into the clinker-producing kiln in the form of calcium fluoride. It is possible to grind the clinker to form a cement, in the absence of the customary additions such as gyp- sum or anhydrite.

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