Main Composition:Al2O3 Application:Hot blast stove, arc furnace, cement kiln, etc Main Raw Material:Mullite Standard Size:230*114*65 mm Refractoriness: above 1790℃ Standard:ISO 9001 & 14001

Product Introduction

Mullite brick refers to a high alumina refractory material with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%.Mullite bricks have high refractoriness, which can reach above 1790℃. Mullite bricks are pided into sintered mullite bricks and fused mullite bricks.

Features

1.Long Service Life. 2.Low Linear Expansion Change. 3.Good Erosion and Corrosion Resistance. 4.High Compressive Strength. 5.Good Thermal Shock Resistance.

Application

Mullite bricks are mainly used for hot blast stove top, blast furnace body and bottom, regenerator of glass melting furnace, ceramic sintering kiln, lining of petroleum system, etc.

Item		CF1550	CF1600	CF1650
Al2O3(%)		>=60	>=65	>=70
Fe2O3(%)		<=1.5	<=1.2	<=0.8
TiO2(%)		-	<=0.6	<=0.5
Bulk Density(g/cm3)		>=2.5	>=2.6	>=2.65
Apparent Porosity(%)		<=19	<=19	<=19
0.2MPa Refractoriness Under Load(℃)		>=1500	>=1550	>=1600
Cold Crushing Strength(MPa)		>=60	>=70	>=75
Thermal Shock Resistance (900℃, water cooling)(Cycles)		>=25	>=30	>=35
Thermal Expansion Rate (20~1000℃)(%)		<=0.8	<=0.7	<=0.7
Permanent Linear Change   (1500℃×3h)(%)		±0.5	±0.5	±0.3
Creep Rate	Testing Temperature	1350℃	1400℃	1450℃
	0~50 hrs	<=0.6
	20~50 hrs	<=0.2
Remark		The  standards  for  highest service  temperature  are  oxidizing atmosphere and intermittent furnace.