Dead burned magnesite and fused magnesia are predominantly used in the refractory industry; caustic calcined magnesite is mostly used in chemical-based applications such as fertilisers and livestock feed, pulp and paper, iron and steel making, hydrometallurgy and waste water treatment.
Kaustilist kaltsineeritud magnesiiti kasutatakse peamiselt keemiatehnoloogiat rakendavates valdkondades, nagu väetised ja kariloomade sööt, paberimass ja paber, malmi- ja terasetootmine, hüdrometallurgia ja reoveepuhastus.