Process for the production of cement clinker from fuel shale
OwnerKarl Entzmanninventor
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Abstract
An argillaceous and/or calcareous material, such as a fuel shale, for example an oil shale, which is capable of yielding a cement clinker, is subjected to mechanical disintegration by the particles formed thereby to repeated acceleration and retardation within a period of less than about 0.05 second, thereby homogenizing and activating them, and then sintering the disintegrated material at a temperature between about 900.degree. and about 1300.degree. C for a period between about 3 and about 10 minutes, to form a cement clinker. Other materials such as SiO.sub.2, CaO and R.sub.2 O.sub.3 (Al.sub.2 O.sub.3 or Fe.sub.2 O.sub.3) may be admixed to improve clinker properties. The sintered clinker may be further subjected to mechanical disintegration in an impact-type disintegration.
Claims8
A method of processing an argillaceous or calcareous material capable of yielding a cement clinker to produce a cement clinker therefrom, comprising the steps of:
- a. subjecting said material to mechanical disintegration in a pin-type disintegrator in which the particles formed are subjected to repeated acceleration and retardation within a period of less than about 0.05 second, thereby homogenizing and activating said material;
- and
- b. sintering said disintegrated material at a temperature of between about 900.degree. C. and about 1300.degree. C. for a period of time between about 3 and about 10 minutes, thus volatilizing any organic components of said material and forming said clinker.
Dependencies are inferred from the claim text.