Fused zirconia corundum brick AZS fused zirconia corundum brick , also known as the abbreviation is AZS, is based on three chemical composition Al2O3-Zr02-Sio2 ternary phase diagram , according to their order of how much content , Al2O3 take A, Zr02 take Z, Sio2 take S, using the abbreviation green silicon carbide for national standards , such as 33 cast AZS bricks, abbreviated as AZS-33 #, 36 cast AZS bricks, abbreviated as AZS-36 #, 41 cast AZS bricks, abbreviated as AZS-41 #.
AZS bricks are fused with pure alumina and zirconia powder 65% , about 34% silica, zircon sand in the melting furnace in the power injected into the model of cooling a white solid formed , which facies helical structure of corundum and zircon stone and glass eutectoid phase composition , in terms of learning from the phase -phase and zirconium corundum stone ramp eutectoid phase , filling the glass with crystal between them .
Electric cast brick manufacturing process of the selection of zircon sand and industrial alumina powder with 1:1 , plus a alluvial garnet gbrasives small amount of NaZO ( in the form of sodium carbonate is added ), B20: ( in the form of boric acid or borax added ) flux , mixed homogeneous by 1800 ~ 1900 ℃ melted cast molding , can be prepared containing zr02) 33% of the cast slabs . On this basis , the use of part desilication zircon sand as raw material , can be obtained with ZrO236% ~ 41% of the cast slabs . googangyuzhuan corundum brick (z irconia-eorundumrefraetory brick) using industrial alumina powder and a selection of zircon sand as raw material , ZrOZ made ??content is 33 % to 45% of refractory products . Lead is mainly used in the glass industry corundum brick furnaces .
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