Meishen
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.
Tell:+8613833967259
Email:admin@mgochem.com
Wesite:http://www.72meihouwang.com/
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.