Refractory material is a fibrous light refractory material, the main chemical composition is aluminum silicate, according to its mineral components can be divided into castable fiber and polycrystalline fiber two categories. The castable fiber is a kind of amorphous solid fiber formed by the molten liquid in the cooling process. The polycrystalline fiber is formed by the colloid spraying method (or the wire spinning method) and is calcined at high temperature.


Light-fired magnesia refractories are widely used in various thermal kiln insulation and high temperature resistant materials, because their heat capacity is much lower than other refractories, so the heat storage is very small, the heat insulation effect is obvious, as a lining material can greatly reduce the power loss of thermal kiln, in the aspect of energy saving for the thermal kiln has brought a innovation. On the other hand, its application technology and method bring a innovation to the same masonry of thermal kiln.


The main types of refractory materials are: general aluminum silicate fiber, aluminum silicate fiber, aluminum silicate fiber (Cr2O3, ZrO2), polycrystalline alumina fiber and polycrystalline mullite fiber, etc.. In recent years, foreign countries have successfully developed (or are developing) some new types of refractory materials, such as magnesium olivine fiber, refractory materials (SiO2-CaO-MgO and Al2O3-CaO) and so on. Refractory cotton, felt, blanket, module, paper, cloth, tape, rope, etc.


Refractory blanket (fiber module) : choose from melting type, even more melt even left made to jilt silk long fiber production technology, the double needle makes fiber crisscross, can be directly as the flame surface heat, set fire-resistant, heat insulation, heat preservation at an organic whole, in neutral, oxidative and partial reductive chi points for medium and long-term use, can still maintain good strength and patience. The fiber module made of this fiber blanket does not contain binding agent and has good thermal stability. It is widely used in the fields of thermal insulation and heat resistance, such as petrochemical, metallurgy and electric power.


Active magnesium oxide is an important raw material for the preparation of high function and precision inorganic materials, electronic components, inks and harmful gas adsorbents. It is expected to be developed for materials under harsh conditions such as high temperature and high corrosion. It can also be used as fillers for paints, paper and cosmetics, fillers and reinforcing agents for plastics and rubber, and auxiliary materials for various electronic materials.


Lightly burned magnesium oxide is a kind of light burned magnesium oxide obtained from natural magnesite, brucite and magnesium hydroxide Mg(OH)2 extracted from sea water or brine by calcination at 700~1000℃.