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2023-06

How to identify magnesium carbonate

It can't be realized without other reagents! With other reagents: ① sample various sample numbers and prepare them as solutions. ② add a proper amount of hydrochloric acid to the "solution" of magnesium carbonate and barium carbonate to dissolve the precipitate, and then add dilute sodium hydroxide to the solution. The original material of precipitate is magnesium carbonate, and the other is barium carbonate The prepared solution consists of two parts, one is diluted hydrochloric acid, the other is sodium carbonate, the other is barium hydroxide, and the other is sodium sulfate ...

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05

2023-06

How to distinguish light magnesium oxide from heav

Classification: light magnesium oxide (light burning powder) and heavy magnesium oxide (light burning powder). Light volume fluffy, white amorphous powder. Odorless, tasteless and nontoxic. The density is 3.58g/cm3. It is difficult to dissolve in pure water and organic solvent, and its solubility in water increases due to the presence of carbon dioxide. Soluble in acid and ammonium solution. It is transformed into crystal by high temperature burning. When encountering carbon dioxide in the air, magnesium carbonate double salt is formed. The weight is compact in volume, white or beige powder. It is easy to combine with water and absorb water and carbon dioxide in 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. Standard for white pigments. Light magnesium oxide (light burnt powder) is mainly used as raw materials for preparing ceramics, enamels, refractory cr...

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05

2023-06

Difference between MgO content and active content

One of the problems that most manufacturers ignore is that the active content of magnesium oxide and the content of magnesium oxide are always mixed. Here is a brief introduction: MgO content: 85% refers to the content of MgO in the whole light burning powder. Activity content: 65% refers to 65% of magnesium oxide that can react with magnesium chloride and water to form magnesite gel. For example, magnesium hydroxide, magnesium carbonate, overburned magnesium oxide (these are impurities contained in magnesium oxide itself or substances generated during storage, but not harmful substances) do not participate in the reaction. The content of MgO is 85%. Theoretically, its active content should be 65%. However, because the temperature of MgO is too low and less than 600 ℃, it is light burned powder. Its active content may reach 65% or even more than 65%, but its MgO content is less than 85%; 2. The temperature of MgO is too high and more than 800 ℃ or even 1000 ℃ and it is...

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05

2023-06

Properties and uses of magnesium hydroxide

Chemical name: magnesium hydroxide Molecular formula: Mg (OH) 2 Molecular weight: 58.32 English Name: magnesiumhydroxide physical properties: colorless hexagonal crystal, density 2.36, insoluble in water Chemical properties: decomposed to magnesium oxide at 350 ℃. purpose: magnesium hydroxide is widely used in PE, PP, PVC, ABS, PS, hips, PA, PBT, unsaturated polyester, epoxy resin, rubber, paint flame retardant fillers, chemical industry, environmental protection and other industrial fields; excellent flame retardant and fillers used in plastic, rubber and other polymer materials, as flue gas desulfurizer in environmental protection, can replace caustic soda and lime as acid containing waste water As additive of oil products, it can prevent corrosion and desulfuration, refine electronic industry, medicine and sugar, heat preservation materials and other magnesium salt products. General magnesium hydroxide: used in rubber, plastic, paint, coating, chemical industry ...

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05

2023-06

Key technology of magnesium hydroxide flame retard

Recently, new progress has been made in the research of magnesium hydroxide flame retardant project of Qinghai Salt Lake Research Institute of Chinese Academy of Sciences. A new conversion agent system was adopted in the Institute. The hexagonal magnesium hydroxide flame retardant with complete crystal shape was obtained by hydrothermal modification with ordinary magnesium hydroxide as raw material. At the same time, their technical and economic indexes in the process of industrial scale-up have reached the international advanced level, which can provide design basis for the industrial production of ten thousand tons of magnesium hydroxide flame retardant. Industrial grade magnesium hydroxide raw materials can not fully meet the requirements of customers at home and abroad due to its large particle size and wide distribution. With the support of science and technology support project of Chinese Academy of Sciences and Qinghai Provincial Department of science and technology, research...

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News And Information

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How to identify magnesium carbonate

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How to distinguish light magnesium oxide from heav

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Difference between MgO content and active content

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Properties and uses of magnesium hydroxide

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Key technology of magnesium hydroxide flame retard