AZS fused zirconium corundum brick heat insulation Refractory Materials Iron and steel smelting
Refractory fired from refractory clay or other refractory materials. Light yellow or brown. It is mainly used in building smelting furnace and can withstand high temperature of 1580 ℃ - 1770 ℃. Also called refractory brick. Refractory of certain shape and size. According to the preparation process, it can be divided into sintered brick, non sintered brick, fused cast brick (fused cast brick) and refractory and heat insulation brick; It can be divided into standard brick, ordinary brick, special-shaped brick, etc. according to shape and size. It can be used as the structural material of high-temperature building materials, building kilns and various thermal equipment. It can withstand various physical and chemical changes and mechanical effects at high temperature. Such as refractory clay brick, high alumina brick, silica brick, magnesia brick, etc.
The manufacturing process of electrosmelting cast brick combines selected zircon sand and industrial aluminum oxide powder according to 1:1, plus a small amount of Flux NaZO(added in the form of sodium carbonate) and B20 (added in the form of boric acid or borax), mixed evenly, melted at 1800~1900℃ and then cast into shape, can make the casting brick containing zR02)33%. On this basis, casting bricks containing zro of 236%~41% can be prepared by using partial desilicated zircon sand as raw material. Googangyuzhuan Zulu brick (Z Irconia-Eorundum refraetory brick) is a refractory product with 33%~45% ZrOZ content made from industrial alumina powder and selected zircon sand as raw materials. Lead corundum brick is mainly used in glass industry kiln.
Zirconium fused corundum brick is made of pure alumina powder with containing zirconium oxide, silicon dioxide, 34% 65% zircon sand in electric furnace melting into a model cooling after internalization of white solid, the petrographic structure composed of zirconium corundum and inclined stone eutectoid and glass phase composition, tell from the reading is eutectoid zirconium corundum phase and slanting stone, glass phase between the crystallization of them.