Method for producing a clinker for hydraulic cement with low co2 emission and high resistance
AssigneeCemex Research Group AG
InventorsHomero Ramirez Tovias, Juan Carlos Martinez, Norma Leticia Garza Gonzalez, Karla Serrano Gonzalez
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Abstract
A method for producing a clinker for cement, comprising grinding a raw flour comprising, especially, Al2O3, Fe2O3 and SO3 in contents such that the formula for calculating SO3 content of=0.261×Al2O3−0.638×Fe2O3+k, where 2.5<k<3.5, then by sintering flour in an overn wherein the temperature is between 1250° C. and 1350° C. and oxygen content is between 2.5% and 10% by volume.
Claims7
1-6. (canceled)
A process for the manufacture of a clinker for cement, comprising grinding a raw meal comprising Al2O3, Fe2O3 and SO3 in contents such that the formula for calculating SO3 content of=0.261×Al2O3−0.638×Fe2O3+k, where 2.5<k<3.5, and sintering said raw meal in a kiln where temperature is between 1250° C. and 1350° C. and oxygen content is between 2.5% and 10% by volume.
A clinker composition, comprising:
- from 30% to 70% by weight of alite (C3S),
- from 10% to 40% by weight of belite (C2S),
- from 5% to 15% by weight of calcium sulfoaluminate (C4A3S),
- from 1% to 7% by weight of ferrite (C4AF),
- from 3% to 10% by weight of anhydrite (CS), and
- the remainder being composed of lime and/or of C3A.
Dependencies are inferred from the claim text.