Direct bonded magnesia-chrome brick refers to a refractory product in which periclase and magnesia-chromium spinel are directly combined. The brick is made of high-purity sintered magnesite and chromite ore with SiO2 of less than 2% and is sintered by high temperature.
Direct bonded magnesia chrome bricks is made of high-purity or sub-high-purity sintered or fused magnesia and chrome concentrate. Direct bonding refers to a combination of direct contact between solid phase grains. The brick is made of high-purity sintered magnesia and chrome concentrate with SiO2<2% as raw materials and sintered at a high temperature. The degree of direct bonding of the article increases as the SiO2 content decreases and the firing temperature increases.
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.
Application:
Direct bonded magnesia-chrome bricks are widely used in electric arc furnaces, copper-smelting converter flash furnaces, RH, DH vacuum processing equipment, furnace refining VOD furnaces, AOD furnaces, cement rotary kiln, etc.

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