CEMENT

[:ru]Лёрке П.[:en]Loerke, P.[:] [:ru]д-р, научный центр «Linotec», Кёльн, Германия[:en]Dr., Research Centre “Linotec”, Cologne, Germany[:]

Alitinform №3 (35) 2014 г. 16-31 p.

Abstract

The mechanism of the formation of alite and belite with extremely coarse raw mixes may proceed kinetically more energy-efficient according to investigations using ESMA, DTA and XRD via three models. According to model 1 the reaction takes place due to the crystallization of the melt rich in SiO₂ diluted with easily melting phases. Model 2 starts from centres supersaturated with CaO, which are used as crystal nuclei and crystallization centres for the formation of alite and belite and that are originated at the reaction interface between the melt rich in SiO₂ and the aggregates of the solid phase of CaO. Model 3 refers to the absorption of the melt rich in SiO₂ by the conventional melt. The alite formation is completed via the conventional melt.

Key words:

cement; cement making; increasing energy-efficiency