Development of Refractory Material from Water Quenched Granulated Ferrochromium Slag

摘要

High temperature refractory materials of refractoriness above 1665 degrees C having refractory phases such as forsterite (Mg2SiO4), periclase (MgO) and spinel can be developed from the water granulated spongy ferrochromium slag granules (90% particle) of size below 3100 micron by MgO enrichment. MgO enrichment in ferrochrome slag can be achieved by a method comprises of grinding of granulated ferrochrome slag in presence of magnesite raw material followed by compaction and sintering. The ratio of MgO/SiO2 > 2.2 and MgO/(Al2O3 + Cr2O3) > 1.71 in the final composition ensures the refractoriness above 1665 degrees C.