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 soil acidity and as a magnesium supplement for plants. In medicine, it serves as an antacid and laxative to relieve indigestion and constipation. 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 as a drying agent in chemical processes.