High alumina thermal insulation brick 1)ISOCertified 2)Light Weight Mullite Brick 3)High density 4)High wear-resistance High alumina thermal ... ceramic3).Quality :high quality4).Application:lining of ball mill in ceramic, cement, paint, pigment, chemical industry, medicine, coating, fireproofing, mine, etc5 ... ≤0.15≤0.15≤0.15colourWhiteWhiteWhiteWhite High alumina thermal insulation brick