发表时间:2023-05-04
Brucite is also called oxyhydrite, and its Chemical equation is Mg (OH) 2. The hardness of brucite is about 2.5. The common brucite is lamellar aggregate or fibrous aggregate. We usually call it fibrous brucite or brucite asbestos. Today, I will tell you the use of primary brucite and the basic information of brucite. I hope you can understand brucite briefly from the small explanation.
Physical and chemical properties of brucite
The fracture surface of brucite shows glassy luster, its cleavage surface has pearl luster, and the luster of fibrous brucite is silk like; 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: fibrous brucite has a tensile strength of about 902MPa, which is a medium strength fiber material. The elastic modulus of brucite is 13800MPa, which has a 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 naturally formed. It will dissolve in strong acid, and brucite is vulnerable to erosion in humid environment.
Application of brucite
Industrial application: Brucite can be used to extract magnesium and magnesium oxide, and brucite can be used to extract magnesium and MgO. Because of the MgO content in brucite ore and easy decomposition, products such as Mg and MgO can be extracted from brucite; The refracted magnesia produced from brucite has the advantages of high density and high refractoriness. Because in the modern steel industry, a large number of products such as magnesium carbon bricks and magnesium chromium bricks are needed; Brucite can also be used to manufacture light magnesium oxide: Europe, America and other developed countries can use certain chemical methods to extract light MgO from low-quality brucite for use; At the same time, brucite can also be used to make chemical pure magnesium reagents. Magnesium can be extracted by electric heating to make chemical pure magnesium reagents.
Periclase is synthesized by electric melting, which can be used to produce special pure products for high-tech electronic products. Periclase, which has high thermal conductivity and good electrical insulation, is made from bischofite by electric melting. At the same time, brucite can also be used as reinforcement material, and fibrous brucite can be used as a substitute for chrysotile in some special fields. Polypropylene can also be used as the matrix to produce flame retardant. Because brucite has good flame retardant effect, it is non-toxic and pollution-free flame retardant. Because of its high whiteness, brucite can be used for paper making. In addition, because bischofite is dense and has rich colors, good light transmittance, and even and delicate texture, it is processed to form other patterns, which is of great ornamental value.
The formation reason of brucite
Brucite is a mineral formed by low-temperature hydrothermal alteration in dolomite or serpentinite. The crystal structure presents a layered structure, with ion bonds within the structural layers of the ore, and each layer of the structure can be maintained by phase. The single crystal of brucite presents a thick plate shape, which is commonly in the form of sheet and fiber, and also often forms the appearance of periclase.
Well, this is the end of Xiao Bian's introduction of brucite. I believe you have a certain understanding of the use and properties of brucite through this introduction.