refsource

High alumina refractory bricks for electric furnace roofs & for E.A.F. Roof

High-Al bricks for E.A.F. Roof

Brands Items	for the hole of Electrode	Brick for Furnace Roof
Brands Items	TDL-A	TDL-B
Al₂O₃, %	≥81	≥78
TiO₂, %	≤2.9	≤3.5
Fe₂O₃, %	≤1.7	≤2.0
AP, %	≤22	≤24
CCS, MPa	≥60	≥50
Thermal Shock Resistance (950℃ water cooling), Cycles	≥20	≥20

High alumina bricks for electric furnace foof

Brands Items		DL-80	DL-75	BDL-80	BDL-75
Al₂O₃, %		≥80	≥75	≥75	≥75
Refractoriness, ℃		-	-	≥1780	≥1780
RUL (0.2MPa), ℃		≥1530	≥1520	≥1530	≥1520
PLC (1550℃×2h), %		0.2~0.4	0.2~0.4	-	-
AP, %	Roof brick	≤19	≤19	≤18	≤18
AP, %	Arch brick	≤21	≤21	≤20	≤20
CCS, MPa		≥75	≥65	≥60	≥55
Thermal Shock Resistance (1100℃ water cooling), Cycles				≥8	≥8

Corundum well blocks for steel ladle