Hard burned magnesium oxide has relatively low reactivity. This product is used in applications where slow degradation or chemical reactivity is required. Magnesia Solutions’ hard burned magnesium oxide products have high density and low reactivity properties, and are available in both milled and sized forms. This product is used in the following applications: Abrasives, Ceramics, Oil & Gas Drilling Fluids/Cements, Fiberglass production, Synthetic Fibers, Magnesium Salts, Fertilizer, Water Treatment, Leather Tanning, and a variety of other Industrial Applications.