C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/65
C04B 7/24 (2006.01) C04B 7/42 (2006.01)
Patent
CA 1117557
ABSTRACT OF THE DISCLOSURE 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 homogenized pelletized, decar- bonized at a temperature of from 800° to 1000° and roasted at a temperature of from 1200° to 1350°C. Dust sublimates which are wastes of the titanium production, are added at the stage of grinding or homogenization in an amount of 0.5 to 6.0% by total weight of raw mix, and or addition of the dust sublimate at the homogenization stage, an aqueous suspension of cakes which are wastes of the titanium and magnesium production and comprise a paste-like mass with a moisture content of 60 to 80% 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°-150°C lower.
312689
Baklanov Grigory M.
Drepin Nikolai F.
Feofanov Lev P.
Frantsevich Andrei M.
Garmash Vladimir I.
Krivorozhsky Tsementny Zavod
Marks & Clerk
Zaporozhsky Titano-Magnievy Kombinat
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