Light-burned magnesia is made of natural magnesite as raw material, purified by flotation, light-burned, finely ground, pressed ball, and calcined in high-temperature oil shaft kiln. It is a brick and indeterminate refractory. Fused magnesia is made of light-burned magnesia as raw material, calcined by briquetting and high-temperature shaft kiln, and the magnesium content is 97%. The commodity has good sintering degree and good crystallization function. 1622161797168443.jpg
It is the raw material for the consumption of medium-level magnesia refractory products. Fused magnesia, also known as fused magnesia, is not only used as a refractory material for high-tech commodities, but also used in the power industry, aerospace industry and nuclear industry. Compared with sintered magnesia, fused magnesia mostly uses high-quality natural magnesia and light-burned magnesia. It is heated and melted in a high temperature electric arc furnace, and the melt is naturally cooled. The main crystal phase of magnesium oxide is mainly formed from the melt easily crystallized, the crystal growth is super, the crystal is coarse, the degree of direct bonding is high, and the structure is fine. This feature makes fused magnesia more resistant to temperature than sintered magnesia. Under the oxidizing atmosphere, it keeps shaking below 2300 ℃, and its high temperature structural strength, slag resistance and room temperature hydration are better than sintered magnesia. High-activity nano-fused magnesia can be sintered at low temperature without the use of sintering aids to prepare fine-grained ceramics or multi-functional magnesia films. It is expected to develop into materials under harsh conditions such as high temperature and high corrosion. Due to its high activity and high dispersibility, it can even be made into fibrous magnesium oxide, which is especially good for compounding with polymers or other materials. The material also has a strong ability to absorb microwaves, without reducing the strength and durability of the raw material, and participates in the use of fibrous magnesium oxide, which has a reinforcing effect. Light magnesia ultrafine powder can also be used as a sintering aid and shaking agent for nanoparticles such as zirconia, alumina, iron oxide, etc., to obtain high-quality nano-phase ceramics.
Fused magnesia will have many applications in our life and consumption. We must choose good quality when choosing fused magnesia, so as to avoid unnecessary trouble in our later use.