High Quality Magnesia Chrome Bricks Sold by Sunrise Refractory

Direct bonded magnesia chrome brick is a product made from high-purity or sub-high-purity sintered or fused magnesia and chrome concentrate. The product has few impurities, is fired at high temperature and ultra-high temperature, and the glass phase is concentrated in the triangular region of the crystal phase, and the crystal phase and the crystal phase are directly combined. It has low porosity, high compressive strength, strong wear resistance, corrosion resistance, thermal shock and anti-flaking.

 

The direct combination of magnesia chrome brick is made of high-purity sintered magnesia and chromite ore with SiO2 of less than 2% and is sintered by high temperature. The magnesium-chromium grains are directly combined with the pericdsite periclase or the periclite spinel, and a small amount of the silicate is in the form of an isolated state. During the firing process, the silicate in the chrome ore particle gap gradually moves into the matrix as the temperature rises, so that the chrome ore particles are in contact with the periclase and diffuse and dissolve into the periclase crystal. At high temperatures, the part of the periclase and chrome ore is dissolved in the silicate. When cooled, it precipitates as a desolvent particle secondary spinel or secondary periclase in the magnesite and grain boundaries. The direct combination of periclase-periccite and periclite spinel is formed, and a small amount of silicate phase is isolated between the grains. As the firing temperature increases, the dissolution at high temperatures and the desolvation during cooling increase, and the degree of direct bonding between the crystals increases.

Product performance: high temperature structural strength, high load softening temperature, strong resistance to chemical attack.

Application: Directly combined bricks are widely used in open hearth furnaces, electric arc furnaces, copper smelting converters, flash furnaces, RH, DH vacuum processing equipment, furnace refining VOD furnaces, AOD furnaces, cement rotary kiln, etc.

 

Zhengzhou Sunrise Refractory Material Co., Ltd. sells various types of refractory materials such as refractory materials, thermal insulation materials, aluminum silicate refractory fibers, medium frequency furnace lining magnesium binders and so on. Our company has strong strength, strong technical force and strict quality control. At the same time adhering to the integrity-based business policy, the quality of the products we operate is reliable and the price is reasonable. Well received by the majority of users, has a large number of long-term partners. You are welcome to get in touch with our company.