In this study the effect of nano meter size ZrO2 particles on the microstructure, densification and hydration resistance of magnesite –dolomite refractories was investigated. 0, 2, 4, 6 and 8 wt. % ZrO2 particles that were added to magnesite –dolomite refractories containing 35 wt. % CaO. The Hydration resistance was measured by change in the weight of specimens after 72 h at 25℃ an...

Alumina-magnesium castable refractories are used for the inner walls of molten steel ladles. The main cause damage to these is thermal shock caused by rapid temperature changes during loading and unloading steel. Therefore, resistance coefficient R'''' a parameter that expresses shock, evaluation effective fracture energy important improving R''''. In this refractory, CaO·6Al2O3 (CA6) formed fr...

The disposal of spent refiactory materials has become a major problem for metals producers. The main issue surrounding refractory disposal is the elimination of the hazardous components of refractories, most commonly chrome-bearing materials and fluoride and cyanide in spent pot-liners. The various approaches to pollution prevention involve re-design to eliminate or significant reduction in was...