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Magnesium Oxide manufacturers classification of Magnesium Oxide

Release date:2018-04-12 Author: Click:

The light burning Magnesium Oxide is dried to a constant weight of 105 centigrade of 6 g potassium hydrogen phthalate ester, which is to say, adding 50 ml of boiling water, shaking and dissolving it; adding 2 drops of phenolphthalein indicator, near the end line of the liquid titration, should be completely dissolved in potassium phthalate, and titrate the pink solution of the solution. Titration with sodium hydroxide solution (1mol/L) for 1 ml is equivalent to 204.2 mg potassium hydrogen phthalate two formate. The concentration of liquid is calculated according to the consumption of fluid and the dosage of potassium hydrogen two phthalate.

Light burned magnesia powder is a material with medium alkalinity and chemical activity. It is used in other industrial fields besides refractories and cementitious materials. In addition, the development of converter slag splashing technology has further expanded the application scope of light burned magnesia powder. At present, the technology of light burning Magnesium Oxide slag splashing furnace mainly uses light burned magnesia powder as a ball, with light burning magnesia powder, carbon containing light burning Magnesium Oxide, and carbon containing calcium and light burning magnesia powder.

Light burned magnesia powder, short for light magnesia powder, is a kind of activated Magnesium Oxide obtained by calcining of magnesite, brucite and magnesium hydroxide extracted from sea water or brine through calcining at about 800~1000. Light burned magnesia powder is light yellow, light brown powder, the size of most of the grain is below 100 mesh, periglast crystal is very small, the density is 3.07~3.22g/cm3, the lattice constant is large, the lattice defect is large, the lattice defect is many, the texture is brittle, the structure is porous, the reaction activity is very large, the solid state reaction or sintering is easy to be carried out, and the action of water is formed to harden the Mg (OH) and bond energy. Power。

Selecting the calcining way and controlling the light burning temperature are the important Magnesium Oxide sections with good activity. With the increase of calcination temperature, the specific surface area of MgO decreased significantly. When the temperature is greater than 1000 degrees, the recrystallization speed of MgO increases, the dispersion decreases sharply and the activity becomes worse. Different calcination methods and calcined Magnesium Oxide burning equipment at the same temperature are also important factors affecting MgO activity. If fluidized bed furnace and suspension furnace are used to calcinate them, they can be decomposed quickly in an instant.

Light burning Magnesium Oxide

Light burned Magnesium Oxide has the largest activity of light burned magnesia powder. In the way of tunnel kiln and large reflector kiln, the calcining time is very long, which often makes the surface burn over and burn internally, which will reduce the activity of light burned magnesia powder. The calcination of granular magnesite by rotary kiln is between the two, and it can also maintain the activity of light burned magnesia powder. 1. the content and activity of Magnesium Oxide are directly proportional to a certain range, and there is no such a strict or reliable proportional relationship between Magnesium Oxide and its light burned Magnesium Oxide.

2., it is a serious mistake to think that "beyond this range is inversely proportional".

3. now, Magnesium Oxide is misunderstood by some people as light burning powder. It is also a serious mistake. It should be said that the main ingredient of the light burning powder is Magnesium Oxide, and the light burning powder also contains impurities such as MgCO3, Mg (OH) 2, CaO, Fe2O3, Al2O3, SiO2 and so on. Conversely, it is a serious mistake to call Magnesium Oxide a mild Magnesium Oxide burn.

4. with the innovation of time and technology, the definition of light burning powder and diamond bitter soil has also changed greatly. The magnesite is made of magnesite, which is made of old soil kiln. The color is dark, the content of impurities is very high, and the light burning powder is mostly made of magnesite. The content is much less.

In addition, there is a deep area of misunderstanding, using ethylene glycol extraction method to determine the content of f-CaO in light burning powder. According to the experiment, the Magnesium Oxide is burned and the glycol absorbs the Magnesium Oxide. As the extraction time is different, it will have a visible effect on the results. This point is related to some national standard correction. Other articles coincide. This proposal is very important, and experts can further demonstrate it.

  


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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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