Abstract
Magnesite powders have different chemical compositions, density, and structures. The properties of magnesite powders substantially affect the factors, particularly thermal shock resistance, (spalling resistance) of magnesite powders with a spinel bond. The production of highly thermal shock resistant products is governed by the formation of a heterogeneous and irregular crystalline microstructure in the products which is guaranteed by the use in them of granular constituent, chemically pure, dense, strong, and inert (with respect to secondary recrystallization) magnesite powders. The chief structural features of magnesite products based on spinel bonds can be evaluated as a first approximation by the coefficient of irregular granularity and the secondary recrystallization of periclase.
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