Wholesale prices of Dehui electric fused magnesia manufacturers
The calcined magnesite is mainly composed of magnesite ore with a content of more than 46%. When the magnesite ore is calcined and heated in a high temperature shaft kiln to 1400-1800 ℃, Mg (CO3) is completely decomposed to generate periclase, which becomes hard reddish brown calcined magnesium with high fire resistance. It is an ideal raw material for producing unshaped refractory materials. The products are used for steel making open hearth furnace, electric furnace bottom and ramming furnace lining.
Wholesale prices of Dehui electric fused magnesia manufacturers
Identification of fused magnesia manufacturers High purity magnesia is produced by flotation purification of natural super grade magnesite ore through light burning, fine grinding, ball pressing and ultra-high temperature oil shaft kiln calcination. It is a high-quality raw material for brick making and indefinite refractory. Medium grade magnesia is produced from light burned magnesia with 97% MgO as raw material by pressing ball and calcining in high temperature shaft kiln. The product has good sintering degree and dense crystallization. It is a high-quality raw material for producing medium grade magnesia refractory products.
Wholesale prices of Dehui electric fused magnesia manufacturers
The magnesium oxide extracted from seawater is called seawater magnesia. Magnesite is one of the important raw materials for refractories, which is used to manufacture various magnesia bricks, magnesia alumina bricks, ramming materials, furnace repairing materials, etc. Those with more impurities are used to pave the bottom of the steelmaking furnace. Magnesite manufacturer
Wholesale prices of Dehui electric fused magnesia manufacturers
Thermal conductivity λ= 123.5W/(m · K) (at 100 ℃), decreases with temperature rise. The elastic modulus is 1.96 MPa. The chemical property is stable, and there is no reaction or weak reaction between it and various refractory materials except silica brick at a high temperature of 1500 ℃. The grain size of periclase increases with the increase of calcination temperature and holding time, and the slag resistance is also improved. See the table for the quality requirements of fused magnesia in China.
Wholesale prices of Dehui electric fused magnesia manufacturers
Main uses of fused magnesia: fused magnesia is mainly used for auxiliary refractory materials such as gunning materials and ramming materials, electrical grade magnesia powder for flow-through bricks, magnesia bricks, magnesia chrome bricks, 97 fused magnesia, 98 fused magnesia and other special refractory bricks, and can also be used as refractory lining on vacuum and non vacuum induction furnaces and electric arc furnaces. It is an ideal raw material for making magnesia crucibles, furnace liners and various high-temperature casings.
