Influence of Heat Treatment Mode of Various Magnesia Rocks on their Properties

Investigations of the changes of structure, specific surface and true density of following high-magnesia rocks at heat treatment have been performed: brucite rocks, magnesite, hydromagnesia rocks, amorphous magnesite. It has been revealed that to obtain chemically active magnesium oxide, which is used for synthesis of high-refractory materials and obtaining magnesia binder, it is necessary to burn at low or moderate temperatures in the temperature range of 500-800 °С. Increase of temperature more than 800 °С leads to obtaining densely sintered cubic magnesium oxide with the periclase structure

Influence of Heat Treatment Mode of Various Magnesia Rocks on their Properties

AbstractInvestigations of the changes of structure, specific surface and true density of following high-magnesia rocks at heat treatment have been performed: brucite rocks, magnesite, hydromagnesia rocks, amorphous magnesite. It has been revealed that to obtain chemically active magnesium oxide, which is used for synthesis of high-refractory materials and obtaining magnesia binder, it is necessary to burn at low or moderate temperatures in the temperature range of 500-800°C. Increase of temperature more than 800°C leads to obtaining densely sintered cubic magnesium oxide with the periclase structure