What are the applications of magnesium hydroxide in the environmental field?
As an important inorganic salt compound, magnesium hydroxide is widely used, not only as flame retardant, flue gas desulfurization agent, heavy metal wastewater precipitation agent, acid wastewater neutralizer, cosmetics and food additives, etc.
Magnesium hydroxideAs an important inorganic salt compound, the use is very extensive, not only can be used as flame retardant, flue gas desulfurization agent, heavy metal wastewater precipitation agent, acid wastewater neutralizer, cosmetics and food additives, but also the production of magnesium oxide important raw materials. Especially when used as an inorganic flame retardant, magnesium hydroxide has high decomposition temperature, good flame retardant effect, strong smoke suppression ability, and does not produce any toxic and corrosive substances after decomposition, so it has attracted more and more attention.
Magnesium hydroxide is added as an inorganic flame retardant in the polymer, and the morphology, purity and particle size distribution of magnesium hydroxide have a great influence on the performance of the polymer. At present, the production methods of magnesium hydroxide flame retardant include hydrothermal method, direct precipitation method, microwave synthesis method, precipitation-azeotropic distillation method and so on.
In the actual industrial production, a wide range of methods are hydrothermal and direct precipitation. If you want to produce magnesium hydroxide products with special morphology and high quality, you need to combine the application of hydrothermal method and direct precipitation method, so as to play a good effect. The precipitation process of magnesium hydroxide directly determines the quality of the product after hydrothermal water treatment, so it is very important to study the precipitation process of magnesium hydroxide.
Because magnesium hydroxide has high activity, strong adsorption, good fluidity and easy pumping and storage, and part of magnesium hydroxide also has non-coagulation and non-sedimentation, it has been well applied in the environmental field. These applications include the removal of heavy metals in mine emissions and industrial emissions, neutralization of industrial acid-containing wastewater, flue gas desulfurization, land acid rain treatment and PH adjustment, etc.
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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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