Chromite Refractories

Here, a distinction must be made between chrome-magnesite refractories and magnesite-chromite-refractories. Chromemagnesite material usually contain 15-35% Cr₂O₃ and 42-50% MgO whereas magnesite-chromite refractories contain at least 60% MgO and 8-18% Cr₂O₃.

Chrome-magnesite refractories are made in a wide range of qualities and are used for build­ing the critical parts of high temperature furnaces. These materials can withstand corrosive slags and gases and have high refractoriness. The magnesite-chromite products are suitable for service at the highest temperatures and in contact with the most basic slags used in steel melt­ing. Magnesite-chromite usually ahs a better spalling resistance than chrome-magnesite.