Magnesium oxide application field: Mainly used in the production of magnesite products. Light burnt magnesia and magnesium chloride aqueous solution in a certain proportion can be cemented and hardened into a hardened body with certain physical and mechanical properties, known as magnesite cement. As a new type of cement, magnesite cement has the advantages of light weight, high strength, fire prevention, heat insulation, energy saving and environmental protection, and can be widely used in building materials, municipal, agricultural, machinery and other fields. According to WB/T1019-2002 "Light burnt magnesia for magnesite products", the chemical composition of light burnt magnesia is shown in Table 1.