Insulating Fire Brick (GJM 23 GJM 26 GJM 28)

Product Name: Insulating Fire Brick (GJM 23, GJM 26, GJM 28) Model NO.: GJM 23, GJM 26, GJM 28, GJM 30, GJM 32 Material: Mullite Shape: Brick Type: Refractory Material Feature: Long Time Materials Refractoriness (?): 1770< Refractoriness< 2000 Trademark: CMAX Transport Package: Carton+Pallet Specification: ASTM Standard Origin: China HS Code: 69022000 Product Description GENERAL INFORMATION:CMAX insulating firebricks are classified under temperature between 1300º C and 1700º C, manufactured from high purity alumina clay by mixing, press-forming, drying, sintering and machining. Bricks contain carefully-graded organic fillers which are burned out during sintering to give a uniform controllable pore structure. This technique makes product feature low thermal conductivity and excellent heat insulationCMAX insulating firebrick can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non ferrous foundries, petrochemical, ceramic, glass, cement and oil fired electric power generating plants.ADVANTAGES:Light weight and low thermal conductivity allows thinner furnace wallsMaintain stable structural strength throughout ambient to maximum service temperatureLow heat storage results in rapid cooling and heating operationLow iron and impurities to enhance reducing atmosphereHigh thermal shock resistance in preventing spallingNon standard sizes and shapes are available upon requestAPPLICATIONS:Ceramic shuttle kilnsmetal heat treatment furnaces Steel billet reheating furnaces Oil refinery heatersLaboratory furnacesATTACHED TECHNICALDATAITEM NAMEUNITGJM30GJM28Physical Properties: Classification Temperature F30002600Bulk Densitykg/cm³ ≤ 1.0≤ 0.8C. C. R. Strength MPa≥ 3≥ 2.5Reheating Linear Change% ≤ 0.9 (1550C, 12 h) ≤ 0.8 (1510C, 12 h)Chemical Analysis: Al2O3 % ≥ 75≥ 65Fe2O3 %≤ 0.5≤ 0.6Thermal Conductivity: 800Cw/m? k≤ 0.39≤ 0.37 1000Cw/m? k≤ 0.43≤ 0.41 1200Cw/m? k≤ 0.48≤ 0.46ITEM NAMEUNITGJM23GJM26Physical Properties: Classification Temperature F23002600Bulk Densitykg/cm³ ≤ 0.52≤ 0.9C. C. R. Strength MPa≥ 1.2≥ 1.8Reheating Linear Change% ≤ 0.5 (1550C, 12 h) ≤ 0.7 (1410C, 12 h)Chemical Analysis: Al2O3 % ≥ 45≥ 55Fe2O3 %≤ 1.0≤ 0.7Thermal Conductivity: 800Cw/m? k≤ 0.18≤ 0.35 1000Cw/m? k≤ 0.20≤ 0.39 1200Cw/m? k---≤ 0.43