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Ildfast, basisk, brændt eller ubrændt formlegeme på magnesiabasis med et fra en ferrochromtilsætning hidrørende chromindhold og fremgangsmåde til fremstilling deraf.
Mejoras introducidas en el procedimiento de fabricacion delrevestimiento refractario para la zona de sinterizacion de hornos, especialmente, hornos rotatorios de la industria delcemento.