Category · Al₂O₃ 45 – 90% · Max 1800 °C

High-Alumina Refractory Bricks — Supplier from India

High-alumina refractory bricks are fired refractory products containing 45% to 90% aluminium oxide (Al₂O₃). They are specified where service temperatures exceed 1400 °C and fireclay bricks would fail — cement kiln burning zones, glass tank crowns, steel ladle linings, and reheating furnaces. firebrickssource.com supplies the full 45 / 50 / 60 / 70 / 80 / 90% range plus > 90% corundum, manufactured in Gujarat and exported worldwide.

Variants in stock

Grades of high-alumina bricks

$45 – 50% High-Alumina Refractory Bricks — firebrickssource.com$

HA-45 · HA-50

45 – 50% Alumina Bricks

Entry-grade high-alumina. Cement kilns, lime kilns, secondary steel-plant zones.

Al₂O₃ 45 – 50% Max 1500 °C

$60% High-Alumina Refractory Bricks — firebrickssource.com$

HA-60

60% Alumina Bricks

Workhorse grade — cement transition zone, steel preheating furnaces.

Al₂O₃ ≥ 60% Max 1500 °C

$70% High-Alumina Refractory Bricks — firebrickssource.com$

HA-70

70% Alumina Bricks

Glass furnace regenerators, cement burning zone, ladle slag-line back-up.

Al₂O₃ ≥ 70% Max 1600 °C

$80 – 90% Super-Duty High-Alumina Refractory Bricks — firebrickssource.com$

HA-80 · HA-90

80 – 90% Super Duty

Steel ladle slag-line, blast-furnace stove checkerwork, high-load applications.

Al₂O₃ 80 – 90% Max 1700 °C

$Corundum Refractory Bricks (> 90% Al₂O₃) — firebrickssource.com$

CRD-90+

Corundum Bricks (> 90% Al₂O₃)

Severe-service zones, electric arc furnaces, premium glass-tank applications.

Al₂O₃ ≥ 90% Max 1800 °C

Properties overview

High-alumina grades compared

High-alumina refractory bricks — comparative properties
Grade	Al₂O₃ %	Max temp °C	Bulk density g/cm³	CCS MPa	Typical application
HA-45	45 – 50	1500	≥ 2.20	≥ 40	Cement, lime kilns
HA-60	≥ 60	1500	≥ 2.30	≥ 45	Cement transition, steel preheating
HA-70	≥ 70	1600	≥ 2.50	≥ 55	Glass regenerator, ladle back-up
HA-80	≥ 80	1650	≥ 2.65	≥ 60	Steel ladle, blast-furnace stove
HA-90	≥ 90	1700	≥ 2.80	≥ 70	Severe service, premium zones
Corundum	≥ 95	1800	≥ 3.00	≥ 80	EAF, glass tank, ultra-high duty

Applications

Where high-alumina bricks are used

Cement Kilns

Transition zone, burning zone (60 – 80%), kiln hood.

Steel & Foundry

Reheating furnaces, ladle linings, soaking pits.

Glass Furnaces

Regenerator chambers, port necks, crown construction.

Petrochemical

Cracker reactors, hydrogen reformers, sulphur recovery.

Non-Ferrous

Aluminium holding furnaces, copper anode furnaces.

Ceramics & Kilns

Tunnel kiln roofs, shuttle kiln linings, kiln furniture.

Datasheet

Download high-alumina datasheet

Complete property table for all five high-alumina grades — Al₂O₃ ranges, density, porosity, RUL, PLC, dimensional tolerances.

Download PDF (datasheet)

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