Reaction of Magnesia-Spinel Bricks with Vapored Alkali Sulfate and Alkali Chloride: Part II

摘要

Magnesia-spinel system bricks used in cement rotary kiln embrittle by a reaction with sulfur gas and alkali sulfate /alkali chloride and are damaged". This damage is observed to have a tendency to be remarkably promoted by temperature changes when it was used to continue over the number of campaigns and when it is used at the coating transition zone. Tammann furnace method which generates a temperature gradient was used to evaluate the reaction of alkali sulfate and alkali chloride with bricks until now"', but this time it was evaluated using the crucible method which newly adopts repetition of heating and cooling conditions.