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What is the light burned magnesia workshop?

Release date:2017-11-09 Author: Click:

What is the light burned magnesia workshop?

Magnesite, brucite and magnesium hydroxide extracted from sea water or brine are calcined at about 800~1000 C to make them decompose and discharge CO2 or H2O, that is to get light magnesia powder (Caustic calcined magnesia), also known as light burning Magnesium Oxide, caustic Magnesium Oxide or light magnesia, commonly known as bitter soil powder. The price of light burning powder is loose and chemical activity is large. It can be used to make magnesium cement, magnesite building materials, heat insulation material and so on. It is also the intermediate product of producing high quality magnesia by two step calcining method.

When the magnesite is heated, the ISO - ISO - calfite appears at about 600 degrees C, and the ISO - axis of the calfite disappears at 650, and the ISO - axis of the calfite disappears completely at 850. The lattice of these calcite appears to have higher surface energy due to punctate defects and dislocations. The lattice of MgO is less than that of MgCO3 lattice group. Therefore, the interlattice porosity increases, the porosity is high, the specific surface area is large, and the activity is high.

Light burned magnesium powder

 

The light burned magnesia powder is yellowish yellow and light brown powder, most of the grain size is below -100 mesh. The crystal of periglite is very small (< 3 m), it has a true specific gravity of 3.07~3.22, the accumulation density is 0.8~1.2g/cm3, the refractive index is 1.68~1.70, the lattice constant is large (alpha =0.4212), the texture is brittle, the structure is large, the reaction activity is large, and the solid phase is easy to carry out solid phase reaction. Should be or sintered, water and Mg (HO) 2 will be hardened and bonded. Light burned magnesia powder calcined from magnesite has a shrinkage of about 5%, usually due to incomplete decomposition of 3%~5% with CO2.

The light burning temperature and light burning time of magnesite have certain effect on the activity of light burned magnesia powder. Calcined magnesite was calcined at 600, 650, 700, 750, 800, 850 and 900 centigrade respectively. The calcining temperature of 700, 750 and 800 in 15~90 minutes had no obvious effect on the activity of light magnesia powder. The activity of 600, 650, 850 and 900 was particularly significant. The activity of calcined at 850 and 900 degrees decreased significantly with the prolongation of hydrocarbon burning time.

The light burning magnesium is made of magnesite, calcined by light burning reflex kiln, rotary kiln or boiling furnace. The product is calcined evenly, the quality is stable, the purity is high, and the activity is good. It can be widely used in paper making, chemical industry, rubber, medicine, animal husbandry, fireproof materials.


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  • Contact: manager Yin

    Cell phone: 15998008088

    Phone: 0412-3778988

    E-mail:hcdsky@hcdsky.com

    Address: the archway Industrial Park of the archway of the archway of Haicheng

    (Haicheng Dingsheng Mining Co., Ltd.)

    Web site: www.lndsky.com


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