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             31 October, 2020
 

    
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Effect Of PH Value Of Ammonia On Settling Property of Magnesium Hydroxide

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2020-06-02 09:21:36     
Article by Leon Xue

When the pH value of ammonia water is small, the reaction supersaturation is small, so the magnesium hydroxide obtained has a large particle size and a short settling time. When the pH value of ammonia is high, the reaction supersaturation is high and the settling time of magnesium hydroxide is long.

Under a certain temperature, the supersaturation ratio has the greatest influence on the nucleation rate. Therefore, it is necessary to maintain a large solution pH value (pH=1315), that is, a large concentration of OH- ions, during the experiment. The effect of reaction temperature on the sedimentation performance of magnesium hydroxide when the reaction temperature is too low, the magnesium hydroxide produced by the reaction is in a colloidal state and has poor filtration performance. With the increase of reaction temperature, the hydration rate can be less than 3% if the reaction temperature is cooled to room temperature under airtight condition, which can meet the requirement of silicon steel grade magnesium oxide hydration rate.

MeiShen is the world's leading producer of magnesium oxide,Magnesium oxide is an oxide of magnesium, an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in the form of periclase in nature and is a raw material for magnesium smelting. Magnesium oxide is white or light yellow powder, odorless, tasteless, this product is insoluble in water and ethanol, melting point 2852 ° C, boiling point 3600 ° C, magnesium oxide has high refractory insulation properties. It can be converted into crystal by burning at a temperature above 1000 ° C. If it rises above 1500 ° C, it will form a burnt magnesia or sintered magnesia.

Magnesium oxide can be used in the manufacture of metallurgy, smelting, advanced magnesia bricks, refractory materials and moisturizing materials. It is also widely used in rubber, rubber sheet, rubber products, pharmaceutical industry, food industry, plastic sheet accelerator, glass fiber reinforced plastics and Surface coating of silicon steel sheet, paper production, steel ball polishing, leather treatment, insulation materials, grease, dyes, ceramics, desiccant, resin, flame retardant, etc.

Hebei MeiShen Chemical Technology Group is the main magnesium oxide producer in the world. It is also the largest magnesium salt producer in China and has won the ISO9002 quality system certification. It also has GMP-Certification.

With rich experience in the research, development, production, management and operation of magnesium oxide products, MeiShen Group has always attached great importance to the research and development of new products and strict requirements on product quality.MeiShen has a high-level sales team.The business covers more than 20 countries and regions around the world.It is widely welcomed by new and old customers.

Specialized in: Magnesium Oxide - Magnesium Carbonate - Magnesium Sulphate - Gym Chalk - Liquid Chalk
URL: http://www.72meihouwang.com
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