Fused Magnesia-Alumina Spinel (fused magnesium-aluminate spinel) is made of high purity raw materials in electric arc furnaces. The maximum amount of spinel crystals is achieved by using pure raw materials and electric arc-furnaces. The product has a high thermal shock resistance, slag corrosion resistance, and good refractoriness.
GNPGraystar offers three products with different levels of Magnesia – FS-10 (10% MgO), FS-27 (27% MgO) and FS-33 (33% MgO).
Fused Spinel is used in the production of refractory materials used for the sinter and transit zones of rotary furnaces in cement industry, for the arches of electric arc-furnaces, for the refractory lining of high-frequency furnaces, and various kinds of torpedo ladles and other ladles used in steel industry.