FIELD: methods and devices for production of cement clinker. SUBSTANCE: method includes firing in firing zone and cooling in cooling zone. At the first stage of cooling, supplied fuel is mixed with cement clinker and is, first, subjected to pyrolysis. Obtained products of pyrolysis feature strong endothermal reaction with steam to quickly cool cement clinker so that at least 95% and mostly all liquid phase is converted into glass. Invention provides for production of glassy portland cement. EFFECT: higher efficiency. 14 cl, 2 dwg
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