Boron carbide refractory castable is very important to a substance; it can play a role in anti-compounds. Today, we look at the technical level to explain the important role of boron in castable.
Carbonation can make refractory castable product densification, suppression of carbonaceous refractory castable carbon compounds, but at the time of 1000 ℃ ~ 1250 ℃, Al2O3 and B2O3 reacts 9Al2O3 • columnar crystals 2B2O3, located in refractory castable the cracks in the matrix and thus decrease the porosity, temperature mobilize intensity, and the resulting 9Al2O3 • 2B2O3 crystals, volume expansion, can heal the volume is reduced, diminishing cracks.
Castable field of application of different specifications are not the same. We have to consider many factors, general used in firing big skateboard, Al2O3-SiC-C iron trough castable, 
as well as some high-speed non-burning carbonaceous refractory castable and Al2O3-C refractory castable, MgO-Crefractory interstitial castable general do not, due to the intervention of the elements boron affect the refractory castable using the furnace.
as well as some high-speed non-burning carbonaceous refractory castable and Al2O3-C refractory castable, MgO-Crefractory interstitial castable general do not, due to the intervention of the elements boron affect the refractory castable using the furnace.
You can use Sic powder, metallic Al powder, metallic Si powder, ZrB6 from anti compounds such as replacing utility, aluminum casting material can be a little boric acid substitution, but pay special attention to the amount of manipulation.
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