The chemical composition of sintered magnesia is mainly composed of MgO, and the minor components include CaO, SiO2, Fe2O3, Al2O3; mineral composition: the main mineral is magnesite M (2800°C), and the minor minerals are related to the relative content of the minor components CaO and SiO2, i.e., with the CaO/SiO2 ratio.

Sintered magnesite is widely distributed, and many countries at home and abroad have large quantities of magnesite. Foreign countries are Russia, Austria, Greece, North Korea, Canada, the United States and so on. Domestic mainly Liaoning, Shandong, Hebei, Gansu, Tibet and so on.

Sintered magnesia is one of the important raw materials for refractory materials, which is used to manufacture various magnesium bricks, magnesium aluminum bricks, pounding materials, furnace mending materials and so on. Containing more impurities, used to pave the bottom of the steelmaking furnace, etc. Magnesium sand can be divided into electrofusion magnesium sand, mid-range magnesium sand, high purity magnesium sand to, re-fired magnesium sand, as well as seawater magnesium sand and so on.

The use of sintered magnesium sand: raw materials for making bricks and producing non-shape refractories, finished products are used in steelmaking, electric furnace bottom and pounding furnace lining. The use of electrofusion magnesium sand is: it is an excellent high temperature electrical insulation materials, but also the production of magnesium bricks as well as an important raw material for the production of non-shaped refractory materials.

Sintered magnesium sand beneficiation process is mainly to separate the sand and gravel materials in the sintered magnesium sand for use in various industries. Sintered magnesium sand beneficiation is a direct and more effective method. In the beneficiation process requires the use of numerous equipment. Such as spiral chute, shaking table, rotary kiln, ball mill and other related equipment. Of course, if the sintered magnesium sand material is too large, also need to use to crushing equipment, such as jaw crusher. In the whole sintered magnesium sand beneficiation process can be based on the user's actual needs, choose a different beneficiation process, in order to achieve better results.