Mineral uses of brucite

Brucite is also known as magnesium hydroxide, and its chemical equation is Mg (OH) 2. The hardness of brucite is about 2.5. The common brucite is flake aggregate or fibrous aggregate. We usually call it chrysotile or chrysotile asbestos. Today's Xiaobian will tell us about the use of brucite and the basic information of brucite. I hope we can have a brief understanding of brucite from the explanation made up from childhood.






Physical and chemical properties of brucite






The fracture surface of brucite has glass luster, the cleavage surface has pearl luster, and the luster of fibrous brucite is silk type; Transparent, with a hardness of 2.5. The fine pieces of brucite have flexibility and certain flexibility. The whiteness of sliced brucite can reach 95%.






Mechanical properties of brucite: the tensile strength of brucite is about 902mpa, which is a medium strength fiber material. Brucite has an elastic modulus of 13800mpa and has certain brittleness. It is easy to grind into fine-grained powder. The relative density of brucite powder is 2.39.






Chemical properties: brucite is the best alkali resistant inorganic fiber. It will dissolve in strong acid, and brucite is easy to be corroded in humid environment.






Use of brucite






Use in industry: brucite can be used to extract magnesium and magnesium oxide, and brucite can be used to extract mg and MgO. Due to the MgO content in brucite ore and easy decomposition, products such as Mg and MgO can be extracted from brucite; The calcined magnesia prepared from brucite has the advantages of high density and high fire resistance. In modern iron and steel industry, many products such as magnesia carbon brick and magnesia chrome brick are needed; Brucite can also be used to make light magnesium oxide: developed countries such as Europe and America can extract light MgO from low-quality brucite by certain chemical methods; Brucite can also be used to make chemically pure magnesium reagents. Magnesium can be extracted by electric heating to make chemically pure magnesium reagents.






Periclase is synthesized by electrofusion, and then made into special pure products required by high-tech electronic products. Periclase is prepared from brucite by electrofusion, which has high thermal conductivity and good electrical insulation. Together, brucite can also be used as a reinforcing material. Brucite is used as a substitute for chrysotile asbestos in some special areas. It can also make flame retardant with polypropylene as matrix. Brucite is a non-toxic and pollution-free flame retardant because it has good flame retardant effect. Due to the high whiteness of brucite, it can be used in papermaking. In addition, because brucite is dense, rich in color, good light transmittance, uniform and fine texture, it forms other patterns through processing, which is of great ornamental value.






Composition of brucite






Brucite is a low-temperature hydrothermal alteration mineral in dolomite or serpentine. The crystal structure is layered, the structural layer of the ore is ion bond, and each layer of the structure can be maintained by phase. The single crystal of brucite appears thick plate shape, commonly flake and fibrous. In addition, it often forms the appearance of periclase.