The difference between light and heavy magnesium hydroxide of magnesium hydroxide
Magnesium hydroxide is divided into light magnesium oxide (light burned powder) and heavy magnesium oxide (light burned powder). Light volume fluffy, white amorphous powder. Odorless tasteless non-toxic. Density 3.58g/cm3. It is difficult to dissolve in pure water and organic solvents, and its solubility in water increases due to the presence of carbon dioxide.
Magnesium hydroxideIt is divided into light magnesium oxide (light burned powder) and heavy magnesium oxide (light burned powder). Light volume fluffy, white amorphous powder. Odorless tasteless non-toxic. Density 3.58g/cm3. It is difficult to dissolve in pure water and organic solvents, and its solubility in water increases due to the presence of carbon dioxide. Soluble in acid, ammonium salt solution. It is converted into crystals by high temperature burning. In case of carbon dioxide in the air, magnesium carbonate double salt is generated. Heavy volume compact, white or beige powder. It is easy to combine with water, and it is easy to absorb moisture and carbon dioxide in the exposed air. It is easy to gel and harden when mixed with magnesium chloride solution.
Application: Determination of sulfur and pyrite in coal and sulfur and arsenic in steel. Used as a standard for white pigments. Light magnesium oxide (light fired powder) is mainly used as a raw material for the preparation of ceramics, enamel, refractory crucibles and refractory bricks. Also used as polishing agent adhesive url] coating] and paper filler, chloroprene rubber and fluorine rubber accelerator and activator. After mixing with magnesium chloride and other solutions, it can be made into magnesium oxide (light burning powder) water adjustment. Medicinally used as an antacid and laxative for hyperacidity, stomach and two-finger intestinal ulcer disease. Used in the chemical industry as a catalyst and raw material for the manufacture of magnesium salts. It is also used in the manufacture of glass, dye meal, phenolic plastics, etc. Heavy magnesium oxide (light burned powder) is used in the rice milling industry for firing mills and half rollers. The building industry is used in the manufacture of artificial chemical flooring artificial marble anti-insulation board sound insulation board plastic industry used as a filler. It can also be used to produce other magnesium salts.
It is mainly used to formulate internal medicine to neutralize excessive stomach acid. Commonly used preparations are: magnesium milk-emulsion; Magnesium cover tablets-each containing MgO0.1g; Acid making powder-powder made of magnesium oxide (light burning powder) and sodium bicarbonate.
Production process: light magnesium oxide is generally made of magnesium chloride, magnesium sulfate, or magnesium bicarbonate, which becomes a water-soluble product and then becomes a water-insoluble product by chemical method, and then calcined into magnesium oxide. The bulk density of the products produced is generally 0.2(g/ml), while heavy magnesium oxide is generally directly calcined from magnesite and brucite, and the bulk density is generally 0.5(g/ml).
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Zhongke Flame Retardant Organization Watches 20 Closing Ceremonies
On the morning of October 22, 2022, members of Zhongke Flame Retardant New Materials Co., Ltd. watched the closing ceremony of the 20th Congress under the leadership of General Manager Wang Ligui.
Everyone knows that there are two common flame retardants. Today we are going to talk about only one of them. Aluminum hydroxide flame retardant is an environmentally friendly halogen-free flame retardant, which can be widely used in fabrics, wood, plastics, and rubber., Polyurethane and other industries have ideal flame retardant effect. In the process of industrial application, it is found that flame retardant failure occurs when aluminum hydroxide flame retardant is added. The following are the reasons for the failure of aluminum hydroxide flame retardant, how to prevent it, how to deal with the operation, and restore the original function.
As a flame retardant, magnesium hydroxide also need to improve what aspects?
When it comes to flame retardants, everyone is familiar with them. Although we usually have less contact with them, we can know what they are used for from the name. Have to talk about magnesium hydroxide, we all know that its main presentation state is a granular, at present, the market sales of magnesium hydroxide particle size is larger, part of the commodity particle size up to tens of microns, immediately used as a flame retardant, poor dispersion, the physical properties of raw materials greater harm. In industrial production, physical grinding methods are generally used to reduce the particle size to 1 micron. The surface of magnesium hydroxide has high polarity and is easy to agglomerate. As the compatibility of refractory materials and polymer substrates, it not only reduces its flame retardant grade, but also causes more serious harm to the physical properties of raw materials.
Hefei Zhongke Flame Retardant New Material Co., Ltd
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