Corundum Brick

· Introduction

Corundum products and corundum mullite products are characterized with excellent thermal shock resistance, corrosion resistance and have super properties in erosion and spalling. They are super materials for glass furnaces, heating furnaces, chemical kilns and metallurgic furnaces.

Applications: Widely used as linings in decomposing furnaces for petroleum and chemical industry, as well as chemical fertilizer industry. They are also used as high temperature kiln linings and furniture’s in metallurgical industry.

· Physical and chemical indicators

Index Item	High Pure Corundum Brick DL-98	Corundum Brick DL-95	Corundum Brick DL-90	Chromium Corundum Brick GDL-85	Mullite Corundum Brick MDL-80
Al₂O₃%≥	98.5	95	90	85	80
Cr₂O₃%≥	——	——	——	8	——
SiO₂%≤	0.3	3.0	9.0	0.2	18
Fe₂O₃%≤	0.2	0.3	0.5	0.2	0.5
R₂O%≤	0.3	0.6	0.6	0.5	0.4
Bulk Density g/cm³≥	3.0-3.2	2.9	2.9	3.1	2.75
Compressive Strength at Normal Temperature MPa≥	75	100	100	120	60
Fire Resistant ℃≥	1790	1790	1790	1790	1790
Soften Point at 0.2 MPa Load 0.2MPa≥	1700	1700	1700	1700	1650
Reheating Linear Shrinkages% 1600×3h≤	0.2	0.2	0.2	0.2	0.3
Thermal Shock Stability 1100℃ ≥	6	10	10	15	20

PRODUCTS