STUDY OF PORE DYNAMICS -- AN UNIQUE APPROACH FOR DEVELOPING REFRACTORY MATERIALS

摘要

Recent technological advances in steel making technology demand longer service life of refractory materials for higher production efficiency and economic operation. An increasing interest has been shown in recent years on pore size and its distribution for designing a material for specific application. Now it has been established that they can play a great role to control many material properties and radically improve resistance to hot corrosive fluids which is considered to be the greatest challenges to refractories. In this paper, a fundamental study on pore dynamics of Magnesia-Chrome refractories has been carried out to design a material for specific application. Mercury intrusion porosimetry approach supplemented by microscopic examination has been applied to understand the mechanism of pore dynamics. This study leads to the successful development of Magnesia-Chrome bricks for a particular application with a superior performance.