Internet Helps Magnesium Carbonate Industry
The
specific use of Magnesium oxide in silicon steel After decarburization of
oriented silicon steel in a continuous furnace the upper and lower surface of
the strip should be uniformly coated with magnesium oxide coating solution.
Magnesium
oxide mainly plays the role of isolating agent, in order to prevent the
adhesion of strip steel in high temperature annealing stage, at the same time
can remove the nitrogen, sulfur and other impurities in the steel, in addition
to the silicon dioxide reaction with the surface of silicon steel, form a good
magnesium silicate insulation bottom.
Therefore,
the coating quality of magnesium oxide coating solution on the surface of
oriented silicon steel plays an important role in the quality of silicon steel
products.
At
present, magnesium oxide coating is carried out by a two-roller coating
machine.
The
two-roller coating machine comprises an upper coating roller, a lower coating
roller, a tray, a magnesium oxide coating circulating device, and a nozzle
spraying the magnesium oxide coating liquid in the coating circulating device
to the upper surface of the strip;
The
lower coating roller is immersed in the tray, and the nozzle is sprayed onto
the upper surface of the strip after the magnesium oxide coating liquid
overflows into the tray. The lower coating roller USES the magnesium oxide
coating liquid in the tray to coat the lower surface of the strip.
However,
due to the poor flow of magnesium oxide solution in the tray during the coating
cycle, magnesium oxide reacts with water to form magnesium hydroxide
precipitation, and magnesium hydroxide combines with carbon dioxide in the air
to form magnesium carbonate which is easy to precipitate.
Magnesium
carbonate and magnesium hydroxide have poor fluidity and are prone to
agglomerate deposition.
Therefore,
the tray coating fluid fluidity is not high, as time goes by, coating fluid is
easy to produce accumulation and scale, resulting in poor coating quality of
the lower coating roller, along the strip rolling to the plate surface batch appears
wide and narrow, the number of different double lines, and wear the lower
coating roller, directly resulting in product quality defects.
In
severe cases, it is necessary to stop the machine to replace the coating
roller, clean up the circulation of clogged pipes, and deal with the scaling of
the tray.
On
the one hand, these unfavorable factors greatly increase the labor intensity of
workers; on the other hand, they interfere with the on-site continuous
production and directly affect the production efficiency. At the same time,
because the solidified magnesium oxide coating solution is stuck in the tray
and cannot be used, it is not only difficult to clean, but also causes waste of
magnesium oxide.
In
addition, due to the liquid dumping at the edge of the coating roller, the
coating quality is affected and the work of the coating machine is disturbed,
resulting in scale accumulation at the edge of the coating roller and uneven
coating at the edge of the strip.
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.