轻烧镁粉是什么？ What is Light Burnt Magnesium Powder?
发布日期：2016-02-29 00:00 来源：http://www.ykbhlm.com 点击：
Since the establishment of the factory, relying on the rich magnesite resources in Dashiqiao City and the advantages of convenient transportation, it is committed to the deep processing and industrialization of magnesite. Our factory mainly produces refractory products such as light-burned magnesium powder, light-burned magnesium balls, re-burned magnesia, bitter clay powder, fused magnesium, metallurgical sand, etc. The products are mainly used in metallurgy, chemical industry, feed, environmental protection, medicine, fertilizer, Building materials and other industries. At the same time concurrently operating various powder Raymond processing, and can adjust various physical and chemical indicators according to customer needs.
Our factory has strong production capacity, strong technical force, perfect testing methods, skilled workers in operating techniques, and our products have passed ISO9000 international quality system certification. At present, the products have been exported to more than 20 countries and regions in Europe, America, North and South America and Southeast Asia, and have been well received by customers.
Based on the corporate tenet of "doing business with virtue and reputation first", our factory is willing to cooperate better with customers at home and abroad to meet the needs of our customers with high-quality products and the best prices. Cooperation.
Light-burned magnesium powder, referred to as light-burned magnesium powder, is a kind of active magnesium oxide obtained by calcining magnesite, brucite and magnesium hydroxide extracted from seawater or brine to about 800 ~ 1000 ° C. Light-burned magnesium powder is a light yellow and light brown powder with a particle size of less than 100 mesh. The periclase crystals are very small with a density of 3.07 ~ 3.22g / cm3, a large lattice constant, many lattice defects, and a crisp texture. It has a porous structure and is highly reactive. It is easy to undergo solid phase reaction or sintering. It reacts with water to form Mg (OH) 2 and hardens. It has binding ability.
Selecting the calcination method and controlling the light firing temperature are important means to obtain good activity. With the increase of calcination temperature, the specific surface area of MgO decreased significantly. When the temperature is higher than 1000 ° C, the recrystallization speed of MgO increases, the degree of dispersion decreases sharply, and the activity deteriorates. Using different calcination methods and calcining equipment at the same temperature is also an important factor affecting MgO activity. If it is calcined by a boiling furnace or a suspension furnace, it can be quickly and rapidly decomposed to obtain light-burned magnesia powder with maximum activity. By adopting the block method of tunnel kiln and reflection kiln, the calcination time is long, and the surface is often over-burned and the internal burn-in is caused, which will reduce the activity of light-burned magnesium oxide powder. Rotary kiln is used for calcining granular magnesite, the situation lies between the two, and it can also keep the activity of obtaining lightly burned magnesia powder.
Light-burned magnesium powder is a raw material with medium alkalinity and chemical activity. In addition to being used as refractories and gelling materials, it is also used in other industrial fields. In addition, the development of converter slag splashing furnace protection technology has further expanded the scope of application of light-burned magnesia powder. At present, the slag splashing furnace protection technology mostly uses light-burned magnesia powder into balls, including light-burned magnesia powder balls, carbon-containing light-burned magnesia balls, and carbon-containing calcium-containing light-burned magnesium balls.
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