A Brief Explaination of Magnesium Fluosilicate

Magnesium Fluosilicate is also called the Silicon fluorinated magnesium, and its chemical formula is MgSiF6. It is generally the form of hexahydrate (MgSiF6 · 6H2O), relative molecular mass of 274.48.

Magnesium fluosilicate is a colorless or white odorless needle or diamond crystal. The crystallization of hard deliquescence and can be weathered, the weathering process will lose water of crystallization. The relative density of magnesium fluosilicate is 1.788, and its melting point is 120 ° C (decomposition). Dehydration decomposition above 80 ° C, while the release of the gas silicon tetrafluoride. The crystallization of high solubility in water, dissolved in acidic solution. Can also be dissolved in dilute acid, insoluble in hydrofluoric acid, and insoluble in alcohol. And alkali chemical reaction, the product of the reactants, including silica and fluoride. The substance is toxic.

After purification of fluosilicic acid solution in the reactor with magnesite powder suspension solution to pH = 3 ~ 4 so that one can get the fluorine magnesium silicate solution. By filtration, concentration and crystallization, centrifugal separation, drying, then the fluorine magnesium silicate finished.
In the production of concrete magnesium fluosilicate can be used to improve its strength and hardness of the hardening agent, but also a waterproofing agent. In addition, the silica surface treatment can be used as a fluorine weathering. Toxicity insecticide can also be used as a fabric pest control, or as one of the active ingredients of pesticides. In addition, in ceramic production.

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