... Brick 3)High density 4)High wear-resistance High alumina thermal insulation brick1).Material :alumina2).Category :new material ceramic3).Quality :high ... mill in ceramic, cement, paint, pigment, chemical industry, medicine, coating, fireproofing, mine, etc5.Characteristics:high strength, high tenacity, high density ... . 20≤0.15≤0.15≤0.15colourWhiteWhiteWhiteWhite High alumina thermal insulation brick