Used as a refractory material in furnace linings due to its high thermal stability and resistance to basic slags. Commonly employed in agriculture to correct magnesium deficiency in soils and maintain proper pH levels. In medicine, it serves as an antacid to relieve heartburn and indigestion, and as a dietary supplement for magnesium. Also utilized in construction materials for fireproofing and insulation because of its flame-retardant properties. Plays a role in the production of other magnesium compounds and in wastewater treatment to neutralize acidic effluents.