Process for the preparation of Portland cement clinker

Process for the preparation of Portland cement clinker

A process for the preparation of Portland cement clinker resides in that limey, clayey and iron-containing components are ground together. The mix is then homogeneized pelletized, decarbonized at 800 DEG to 1000 DEG C. and roasted at 1200 DEG to 1350 DEG C. Dust sublimates-wastes of the titanium pro...

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Hauptverfasser: KHLOPKOV, LEONID P, USTINOV, VALE, BAKLANOV, GRIGORY M, SHEVCHENKO, IVAN I, KHODOTOVA, NINA E, MIKHEEVA, VERA I, GASHENKO, STANISLAV I, FRANTSEVICH, ANDREI M, ROGATKIN, ALEXANDR A, MATYGIN, NIKOLAI F, FEOFANOV, LEV P, LEKALOVA, LIDIA I, KOLESNIKOV, ANATOLY V, DREPIN, NIKOLAI F, GARMASH, VLADIMIR I, TELINA, LARISA A, TOKAR, VLADIMIR A
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:A process for the preparation of Portland cement clinker resides in that limey, clayey and iron-containing components are ground together. The mix is then homogeneized pelletized, decarbonized at 800 DEG to 1000 DEG C. and roasted at 1200 DEG to 1350 DEG C. Dust sublimates-wastes of the titanium production-are added at the stage of grinding or homogeneization in an amount of 0.5 to 6.0% by total weight of raw mix, and, in case the dust sublimates are added at the homogeneization stage, an aqueous suspension of cakes-wastes of the titanium and magnesium production-is added at the pelletizing stage, at a volumetric ratio of water to cakes of 3-6:1, and in an amount of 10 to 14% by total weight of raw mix. The process according to the invention enables the preparation of clinker exhibiting an improved strength. With the process according to the invention, the degree of decarbonization of raw mix is as high as 35-50%, and roasting temperature is 120 DEG -150 DEG C. lower.