Magnesium oxide manufacturers tell you about the application of magnesium oxide

Magnesium oxide manufacturers tell you about the application of magnesium oxide

One of the main uses of magnesium oxide is as a flame retardant. Traditional flame retardant materials widely use halogen-containing polymer or halogen-containing flame retardant mixture. However, once a fire occurs, due to thermal decomposition and combustion, a large number of smoke and toxic corrosive gases will be generated, which hinders fire fighting and evacuation of personnel, corrodes instruments and equipment. In particular, it was found that more than 80% of the deaths in fires were caused by smoke and toxic gases produced by materials. Therefore, besides flame retardant efficiency, low smoke and low toxicity are also indispensable indicators of flame retardants. The development of China's flame retardant industry is extremely unbalanced. Chlorine-based flame retardants account for a large proportion, ranking first among all flame retardants, among which chlorinated paraffin is the monopoly. But when chlorine flame retardants act, they release toxic gases, which is far from the harmless and efficient pursuit of modern life. Therefore, in order to conform to the world flame retardant development trend of low smoke, low toxicity and no pollution, the development, production and application of magnesium oxide flame retardant is imperative.

The annual output of magnesium oxide in China is about 12 million tons.

It is used to determine sulfur and arsenic in coal, pyrite and steel. Standard for white pigments. Lightweight magnesium oxide is mainly used as raw materials for making ceramics, enamels, refractory crucibles and refractory bricks. It is also used as a polishing agent, binder, coating, filler for paper, accelerator and activator for chloroprene rubber and fluororubber. After mixing with magnesium chloride and other solutions, magnesium oxide can be prepared for water regulation. It is used in medicine as an antacid and laxative, in gastric acid excess and duodenal ulcer disease. It is used in chemical industry as a catalyst and raw material for making magnesium salt. It is also used for glazing, dyeing meal, phenolic plastics and so on. Heavy Magnesium Oxide is used for grinding and semi-roller in rice milling industry. The construction industry is used to make artificial chemical floor, artificial marble heat-proof board, sound-proof board, plastic industry as filling material. It can also be used to produce other magnesium salts.

0.0086 g/100 mL (30 degree C). When exposed to air, it is easy to absorb water and carbon dioxide and gradually become basic magnesium carbonate. Light products are faster than heavy products. Magnesium hydroxide is formed when combined with water under certain conditions, showing a slightly alkaline reaction. The pH of saturated water solution is 10.3. Soluble in acid and ammonium salt, insoluble in water, its solution is alkaline. It is insoluble in ethanol. It has strong refractivity in the visible and near-ultraviolet light range. Magnesite (MgCO3), dolomite (MgCO3. CaCO3) and seawater are the main raw materials for the production of magnesium oxide. Magnesium oxide is obtained by thermal decomposition of magnesite or dolomite. Magnesium hydroxide is precipitated from seawater treated with lime, and magnesium hydroxide is obtained by burning magnesium hydroxide. Magnesium hydroxide or basic magnesium carbonate can also be precipitated from magnesium chloride brine or brominated brine obtained from comprehensive utilization of seawater by adding sodium hydroxide or sodium carbonate, and then calcined to obtain magnesium oxide. China mainly uses magnesite, dolomite, brine or brine as raw materials.