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New repair material is mainly used for the bottom of the converter, ventilation bricks, blocks of brick and skateboards and other parts of the hot and cold repair materials, gravity filler and joint materials. The technology is featured with high strength, easy Tanping, good sintering, and sometimes requires good ventilation. The tech each time needs less material, while the important parts get enough attention.
Performance of new repair materials
In the table, the number 1 is composed of first-grade fused magnesia, mid-grade magnesia and fused spinel as main materials, and fused white fused alumina powder and calcined alumina powder are added, and the organic and inorganic composite binders are added. 2 with two fused magnesia, mid-range magnesia and sintered spinel as the main material, adding a small amount of ultra-fine powder, but also with a composite binder and accelerator and explosion-proof agent; No. 3 and 4 with fused white corundum powder , Fused magnesia and superfine powder, and add binder and admixture, No. 5 with zircon instead of fused magnesia. No. 1 converter breathable brick magnesia repair material, No. 2-5, respectively, for the ladle ventilation brick magnesia repair materials, Block brick containing zirconium corundum hot feed and its surrounding corundum magnesia fill material.
Ventilation-type repair material is the key technology of self-assembly and self-reaction, self-sintering degree of control, so as to obtain a good ventilation effect. (%) Is Al2O3 65-86, Cr2O3 4-15, the bonding time is 1-3min, the drying bond strength "1MPa, 1500 ℃ bond strength (in) > 6 MPa. The pellet composition
LINKS: High Alumina Brick | Low Porosity Clay Brick | Micro Silica | Spherical Asphalt | Andalusite | Flake Graphite | Aluminum Hydroxide | Aluminum Powder | Kyanite | High Alumina Cement | Explosion-Proof Fiber
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