Dashiqiao Hongkai Refractories Co., Ltd.
Contact number: +86-13841720502
Zip code: 115100
Site: Nanlou Economic Development Zone, Dashiqiao City, Liaoning Province
Office Address: Building No. 5, Fenghua Yihe Village, Dashiqiao City, 105
Classification of magnesia
Magnesia can be divided into fused magnesia, medium-grade magnesia, high-purity magnesia and reburned magnesia.
Reburned magnesia is made by calcining natural magnesite in high temperature shaft kiln. Uses of reburned magnesia: raw materials for brick making and production of amorphous refractories, and finished products for steelmaking, bottom of electric furnace and ramming lining.
Electro-fused magnesia is made by melting selected natural magnesite of grade A or high purity light burnt magnesia particles in an electric arc furnace. The product has high purity, large grain size, compact structure, strong slag resistance and good thermal shock stability. Therefore, the use of remelted magnesia is as follows: it is an excellent high temperature electrical insulation material, as well as an important raw material for making high-grade magnesia bricks, magnesia-carbon bricks and amorphous refractories.
Medium grade magnesia is produced from light burned magnesia with 97% MgO content by pressing ball and calcining in high temperature shaft kiln. The product has good sintering degree and dense crystallization. The use of intermediate magnesia is: it is a high quality raw material for producing intermediate magnesia refractory products.
High-purity magnesia is made from natural super magnesite ore by flotation purification, light burning, fine grinding, ball pressing and calcination in ultra-high temperature oil shaft kiln. The purpose of high purity magnesia is that it is a high quality raw material for brick making and indefinite refractories.