Influence of the Magnesite Grain Type on Decarbonization Behavior of MgO-C Bricks
(Room 207C)
09 May 17
11:00 AM
-
11:30 AM
Tracks:
Steelmaking Refractories & Challenges
MgO-C refractory bricks having different kinds of magnesia grains were prepared for the determination of the effect of magnesia grain type on oxidation resistance of the refractory composite. Data on the rate of decarbonization in air were obtained by performing static and dynamic weight loss measurements at temperatures ranging from 1,100 to 1,550°C. The data revealed that the rate of decarbonization in MgO-carbon bricks manufactured by using fused magnesite grains was lowest at all temperatures. The decarburization behavior of MgO-C bricks having natural magnesite grains was quite comparable, while the bricks containing sea water magnesite grains displayed higher oxidation rates. It was shown that the oxidation resistance of MgO-C bricks made with natural grains of magnesite could be enhanced with proper additions of antioxidants, leading to a cost-effective brick with considerable improvement in performance.