High Alumina Bricks

High Alumina Bricks are produced with select bauxite chamotte as main raw material, fired at 1450-1470 °C by advanced process with strict quality control.

High Alumina bricks have great features like high temperature performance, great corrosion and wear resistance, high bulk density, low iron content, etc. High Alumina bricks are extensively used in mining, metallurgy, cement, and chemical, refinery and refractory industries.

These bricks are used in all kinds of industrial furnaces and high temperature areas to prolong the lives of furnaces.

KT Refractories distributes High Alumina Bricks of the best quality at the most competitive prices worldwide.

Call 1-877-365-2995 to order High Alumina Bricks, and our fast, responsive customer service and reliable delivery service will save you time and money!

Typical High Alumina Bricks Technical Data Specs

Technical data for other firebricks are available upon request.

REFRACTORY BRICKS HIGH ALUMINA ZBHT SERIES

REFRACTORY BRICKS HIGH ALUMINA KFTN SERIES

High Alumina Bricks	Chemical Composition				Physical Indexes
High Alumina Bricks	Al2O3	SiO2	Fe2O3	TiO2	Bulk Density	Apparent porosity (%)	Cold Crushing Strength (MPa)
SK-36	≥50%		≤3.0%		≥2.25	≤26	≥25
A-10	≥60%		≤2.0%		≥2.50	≤20	≥40
SK-38	≥70%		≤2.0%		≥2.45	≤24	≥35
DL-70B	≥70%	≤23%	≤2.2%	≤3.5%	≥2.55	≤24	≥45
DL-70M	≥70%		≤2.0%		≥2.6	≤20	≥50
SA-38	≥70%		≤1.5%		≥2.6	≤20	≥50
SAL-70	≥70%		≤1.5%		≥2.6	≤20	≥60
SAL-75	≥75%		≤1.5%		≥2.7	≤20	≥60
DL-80B	≥80%	≤15%	≤2.0%	≤3.5%	≥2.8	≤23	≥50
VR-85	≥82%	≤12%	≤1.8%	≤3.8%	≥2.7	≤22	≥50
AL-C85	≥82%				≥2.9	≤19	≥96
DL-85B	≥83%	≤11%			≥2.8	≤22	≥60
NWB-85AR	≥85%		≤2.0%		≥2.95	≤17	≥80
SAL-85	≥84%		≤1.0%		≥2.85	≤20	≥60

Typical Application for High Alumina Bricks:

SK standard series high alumina bricks
High Alumina Brick for general applications
High Alumina Brick for blast furnace
Burned micro hole carbon-high alumina brick for blast furnace
Normal high alumina brick for hot blast stove
Low creep high alumina brick for hot blast stove
High Alumina Brick for electric arc furnace roofs
High Alumina Brick for steel ladle

High Alumina Bricks	HA60	HA70	HA75	HA80
Al2O3 (%)	≥ 60	≥ 70	≥ 75	78-80
SIO2 (%)	32	22	20	≥ 18
Fe2O3 (%)	≤ 1.7	≤ 2.0	≤ 1.8	≤ 1.8
Na2O+K2O (%)	< 2.3	< 2.0	< 1.2	/
Refractoriness	>1790	>1800	>1825	≥ 1850
Refractoriness under load 0.2MPa (°C)	1450	>1510	>1530	≥ 1550
Porosity (%)	22	<22	<21	20
Bulk density (g/cm³)	2.33	2.43-2.48	2.40-2.50	2.55
Cold crushing strength (MPa)	≥ 45	≥ 50	≥ 54	≥ 60

High Alumina Bricks		LZ-48	LZ-55	LZ-65	LZ-70	LZ-75	LZ-80	LZ-85
Al2O3 (%)		≥48	≥55	≥65	≥70	≥75	≥80	≥85
Fe2O3 (%)		≤2.5	≤2.5	≤2.0	≤2.0	≤2.0	≤2.0	≤1.8
Refractoriness (°C)		1760	1760	1770	1770	1770	1790	1790
Apparent porosity (%)		≤23	≤23	≤23	≤23	≤23	≤22	≤22
Bulk density (g/cm3)		2.30	2.35	2.40	2.40	2.46	2.68	2.72
Refractoriness under load 0.2MPa (°C)		1420	1470	1500	1510	1520	1530	1550
Cold crushing strength (MPa)		45	45	50	60	60	65	70
Permanent linear change (%)	1500 °C × 2h	-0.4 to 0.1	-0.4 to 0.1	-0.4 to 0.1	-0.4 to 0.1	-0.4 to 0.1	-0.4 to 0.1	-0.4 to 0.1