High-purity magnesium oxide has excellent alkali resistance and electrical insulation at high temperatures

Overview of Magnesium Oxide MgO

Magnesium oxide is an inorganic substance with a chemical formula of MgO. It is an oxide of magnesium and an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in nature in the form of periclase and is a raw material for smelting magnesium.

Magnesium oxide has high fire resistance and insulation properties. After being burned at a high temperature above 1000°C, it can be transformed into a crystal, and when it rises to 1500-2000°C, it will become burnt magnesia (magnesia) or sintered magnesia.

Magnesium oxide is an alkaline oxide, which has the same properties as alkaline oxides, and is a gelling material. It is white or off-white powder, odorless, tasteless, and non-toxic. It is a typical alkaline earth metal oxide with the chemical formula MgO. The melting point is 2852°C, the boiling point is 3600°C, and the density is 3.58g/cm3 (25°C). Soluble in acid and ammonium salt solution, insoluble in alcohol. The solubility in water is 0.00062 g/100 mL (0 °C) and 0.0086 g/100 mL (30 °C). When exposed to the air, it easily absorbs water and carbon dioxide and gradually becomes basic magnesium carbonate. Light products are faster than heavy products. It combines with water to form magnesium hydroxide under certain conditions, showing a slightly alkaline reaction, and the pH of a saturated aqueous solution Is 10.3. It is soluble in acid and ammonium salt and hardly soluble in water, and its solution is alkaline. Insoluble in ethanol. It has strong refraction in the visible and near-ultraviolet range. Magnesite (MgCO3), dolomite (MgCO3·CaCO3) and sea water are the main raw materials for the production of magnesium oxide. Thermal decomposition of magnesite or dolomite obtains magnesium oxide. Treat seawater with slaked lime to get magnesium hydroxide precipitation, and burn magnesium hydroxide to get magnesium oxide. It is also possible to use the magnesium chloride halide obtained in the comprehensive utilization of seawater or the brine after bromine extraction as a raw material, add sodium hydroxide or sodium carbonate, etc. to produce magnesium hydroxide or basic magnesium carbonate precipitation, and then burn to obtain magnesium oxide. China mainly uses magnesite, dolomite, brine or brine as raw materials.

Application of Magnesium Oxide MgO

It is to determine sulfur and pyrite in coal and sulfur and arsenic in steel. Used as a standard for white pigments. Light magnesium oxide is mainly used as a raw material for preparing ceramics, enamels, refractory crucibles and refractory bricks. It is also used as a polishing agent, adhesive, coating, and paper filler, as an accelerator and activator for neoprene and fluorine rubber. After mixing with magnesium chloride and other solutions, it can be made into magnesium oxide water solution. Used in medicine as an antacid and laxative, for hyperacidity of the stomach and duodenal ulcer. In the chemical industry, it is used as a catalyst and a raw material for the manufacture of magnesium salts. It is also used in the manufacture of glass, dyed meal, phenolic plastic, etc. Heavy magnesia is used in the rice milling industry for firing, grinding and half-rolling. The construction industry is used in the manufacture of artificial chemical floors, artificial marble heat-proof panels and sound-proof panels, and as fillers in the plastic industry. It can also be used to produce other magnesium salts.

One of the main uses of magnesium oxide is as a flame retardant. Traditional flame retardant materials are widely used in flame retardant mixtures composed of halogen-containing polymers or halogen-containing flame retardants. However, once a fire occurs, due to thermal decomposition and combustion, a large amount of smoke and toxic corrosive gases will be generated, which will hinder fire fighting and personnel evacuation, and corrode equipment and equipment. In particular, people have found that more than 80% of fatalities in fires are caused by dense smoke and toxic gases produced by materials. Therefore, in addition to flame retardant efficiency, low smoke and low toxicity are also indispensable indicators for flame retardants. The development of China's flame retardant industry is extremely unbalanced. The proportion of chlorinated flame retardants is relatively large, ranking first among flame retardants, among which chlorinated paraffins occupy a monopoly position. However, chlorine-based flame retardants release toxic gases when they act, which is a long way from the non-toxic and high-efficiency pursued by modern life. Therefore, in order to comply with the development trend of low smoke, low toxicity and pollution-free flame retardants in the world, the development, production and application of magnesium oxide flame retardants are imperative.

High-purity magnesium oxide has excellent alkali resistance and electrical insulation at high temperatures. High thermal expansion coefficient and thermal conductivity have good light transmittance. Widely used as high temperature and heat resistant materials. In the ceramic field, it is used as a raw material for translucent ceramic crucibles, substrates, etc., in the electrical materials and electrical fields, for magnetic device fillers, insulating material fillers and various carriers. Used as a ceramic substrate, the thermal conductivity is more than 2 times higher than that of alumina, and the loss of electrolyte is only 1/10 of that of alumina. It can also be used as a raw material for high-purity fused magnesia, and can be used as "analytical pure" magnesia chemically.

Nano-magnesium oxide has obvious small size effect, surface effect, quantum size effect and macro tunnel effect. After modification, there is no agglomeration phenomenon. It has many special functions and important applications in optics, catalysis, magnetism, mechanics, chemical engineering, etc. The value and prospect are very broad, and it is an important new material in the 21st century. Nano-magnesium oxide has a wide range of applications in the fields of electronics, catalysis, ceramics, oil products, coatings and so on. Used in different products, they play different roles. They are used as flame retardants in the chemical fiber and plastic industries; high-temperature dehydrating agents in the production of silicon steel sheets, advanced ceramic materials, electronic industry materials, and binders and additives in chemical raw materials; Radio industry high-frequency magnetic rod antennas, magnetic device fillers, insulating material fillers and various carriers; refractory fibers and refractory materials, magnesia chrome bricks, fillers for heat-resistant coatings, high-temperature, insulation-resistant instruments, electrical, cables, optical materials, and Steelmaking; electrical insulator materials, manufacturing crucibles, furnaces, insulating conduits (tubular elements), electrode rods, electrode sheets.

In the textile field, with the increasing demand for high-performance flame-retardant fibers, the synthesis of new high-performance flame-retardants provides ideal materials for the development of functional fabrics. Nano-magnesium oxide is often used together with wood chips and shavings to manufacture refractory materials such as light weight, sound insulation, heat insulation, refractory fiberboard, and cermets. Compared with some traditional phosphorus- or halogen-containing organic flame retardants, nano-magnesium oxide is non-toxic, odorless, and has a small addition amount. It is an ideal additive for the development of flame-retardant fibers. In addition, nano-magnesium oxide used in fuel has a strong ability to clean and inhibit corrosion, and it has a good application prospect in coatings.

Magnesium oxide MgO price

The price of magnesium oxide MgO will vary randomly according to various factors, such as production cost of magnesium oxide MgO, transportation cost, international situation, and supply and demand of magnesium oxide MgO in the market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost products, nanomaterials and chemicals by providing a full set of customized services. If you are looking for magnesium oxide MgO, please feel free to send an inquiry to get the latest price of magnesium oxide MgO.

Suppliers of Magnesium Oxide MgO

As a global magnesium oxide MgO supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium oxide, silicon oxide, titanium oxide, etc.), high-purity target materials, functional ceramics and structural devices, and provides OEM services.