As an important inorganic chemical product, the use of magnesium oxide in electric heating element is very extensive. The burnt magnesia is mainly used in steel, cement, glass and other industries, such as the manufacture of refractory materials such as refractory concrete and refractory bricks; light burnt magnesium powder is used in the building materials industry, such as the production of magnesium sulfate, magnesium nitrate, magnesium hydroxide, etc.; Magnesium oxide can be used as an antacid and laxative in the pharmaceutical industry, as a decolorizing agent in the food processing industry, as a feed for fertilizers and livestock in agriculture, and in the ceramics industry.
In the production of electric heating elements, magnesium powder is an important raw material. In addition, the types of magnesium powder are different and their properties are different. Its performance is closely related to the raw material of magnesium powder and the production method. The varieties, processes and materials of electric heating elements are It is ever-changing, how to match the specifications of the components and the specifications of magnesium powder. This is the use of magnesium powder. It is not only a technology, but also an art. In the past, there were problems with the heating elements, and the reasons were often pushed to the magnesium powder. Magnesium powder has become a scapegoat for sin.
Industrially produced magnesium oxide is mainly extracted from magnesite, dolomite, brucite, diarrhea salt, magnesium sulfate and magnesium chloride. In recent years, extraction from seawater has reached a large-scale industrial production, and high-purity magnesium oxide can be electrofused to obtain a colorless and transparent ingot, which is one of the raw materials for manufacturing magnesium oxide products, and the high-purity magnesium oxide is sintered. The ability depends on the preparation method, calcination temperature, impurities present and additives. Magnesium oxide has different sources, and its sintering properties and recrystallization properties are also different. Magnesium oxide obtained by thermal decomposition of hydrate has the best sinterability, and magnesium oxide obtained by thermal decomposition of aqueous magnesium chloride has sinterability. Worst. Magnesium oxide obtained by thermal decomposition of magnesium oxalate and magnesium nitrate is moderate in sinterability.
Another use of light burnt magnesium powder is used to make magnesium oxychloride and magnesium sulphide cement for industrial and civil building floors. In the rubber industry, light burnt magnesium powder is often used as a hardener or stabilizer. The fused boron-free magnesia and periclase are usually used for insulating and insulating materials in electric furnace smelting. In the manufacturing industry, light burnt magnesia is commonly used in the production of rayon, fuel additives and rubber. In the production of rayon fiber, light burnt magnesia is used to produce magnesium acetate which can neutralize and regulate rayon; in addition, light burnt magnesium powder is a main material for producing magnesium sulfonate, and magnesium sulfonate can be used as acid acceptor and Soft dispersants are used in crankcase lubricant production and can also be used as fuel additives. When using a fuel with a higher vanadium content as the fuel for the fuel boiler, the addition of light burnt magnesium powder can generate buffered slag vanadate to slow the corrosion of the vanadium. In the oil production process of water injection wells, the addition of magnesium powder can be used as a buffer to control the viscosity and provide antiseptic effect. Most of the light burnt magnesium powder is now quite stable, and there is little room for expansion beyond the environmental industry. In terms of environmentally friendly water treatment, the application of light burned magnesium powder is gradually expanding. In this respect, it is now mainly used to lightly burn magnesium powder and magnesium hydroxide. Light burnt magnesium powder has more advantages than magnesium hydroxide: it has higher neutralization and conditioning capacity, lower transportation costs, and is easier to manufacture.
Several principles to be followed during the use of electric heater internal components:
Everything needs to follow the rules and regulations, just like electric heater equipment, there are instructions for use, but for industrial electric heaters, non-standard electric heaters, different working environments, different power settings, different heating The size and use of the medium and electric heater components are different, but there are some that must be followed for each electric heater. The Chinese electric heater network will tell you that the internal components of the electric heater are in use. Several principles to follow:
1, fully understand the use environment of electric heating tubes, medium conduction or infrared radiation.
2, fully understand the wiring method of electric heaters, usually have star connection and three star connection, a single electric heating tube can be connected to 220v or 380v, multiple electric heating tubes can be directly connected to 380v.
3, dry-burned stainless steel electric heating pipe should pay special attention to the use of the environment's heat dissipation effect, divided into static air and flowing air.