Category · Premium · Max 2200 °C

Specialty Refractories — Premium Refractory Bricks from India

Specialty refractories are premium-grade products engineered for the most demanding industrial environments — glass tanks, electric arc steel-making, petrochemical reformers and severe-service industrial furnaces where standard refractories fail prematurely. The category covers fused-cast AZS bricks (Al₂O₃-ZrO₂-SiO₂) for glass-tank walls, premium corundum (Al₂O₃ ≥ 99%), carbon and graphite blocks for blast-furnace hearths and aluminium electrolysis cells, and zirconia (ZrO₂) refractories for ultra-high temperatures up to 2200 °C. Manufactured in lower volumes and engineered to tight tolerances, specialty refractories are typically specified on a project-by-project basis. firebrickssource.com supplies the full premium range — fused-cast and pressed — from Rajkot, Gujarat to global glass, steel and chemical plant projects.

Premium variants

Specialty refractory grades

$Fused-Cast AZS Refractory Bricks — firebrickssource.com$

AZS-33 · 36 · 41

Fused-Cast AZS Bricks

Al₂O₃-ZrO₂-SiO₂ fused-cast — primary glass-tank flux line, throat & port neck.

ZrO₂ 32 – 41% Max 1700 °C

$Premium Corundum Refractory Bricks — firebrickssource.com$

CRD-99

Premium Corundum Bricks

Al₂O₃ ≥ 99% — EAF lining, glass-tank crown, petrochemical reformer tube blocks.

Al₂O₃ ≥ 99% Max 1800 °C

$Carbon & Graphite Refractory Blocks — firebrickssource.com$

C / GR

Carbon & Graphite Blocks

For blast-furnace hearth, Al electrolysis cell cathode, ferro-alloy SAF.

C ≥ 95 / 99% Max 1800 °C

$Zirconia (ZrO₂) Refractory Bricks — firebrickssource.com$

ZrO₂-95

Zirconia (ZrO₂) Refractory Bricks

Stabilised ZrO₂ ≥ 95% — induction furnaces, plasma reactors, ultra-high T service.

ZrO₂ ≥ 95% Max 2200 °C

Properties overview

Specialty refractories compared

Specialty refractories — comparative properties
Grade	Key chemistry	Max temp °C	Bulk density g/cm³	CCS MPa	Typical application
Fused-Cast AZS	ZrO₂ 32 – 41%	1700	≥ 3.65	≥ 300	Glass tank flux line, throat
Premium Corundum	Al₂O₃ ≥ 99%	1800	≥ 3.20	≥ 100	EAF, glass crown, reformer
Carbon Block	C ≥ 95%	1800	1.60 – 1.75	≥ 30	BF hearth, Al cathode
Graphite Block	C ≥ 99%	1800	1.65 – 1.78	≥ 25	Anti-corrosion, electrolysis
Zirconia	ZrO₂ ≥ 95%	2200	≥ 5.0	≥ 200	Induction, plasma, aerospace

*Typical certified values — actual batch values issued on the per-shipment test certificate. Values aligned with IS 1528 / ASTM C-series / EN 993 test methods.*

Applications

Where specialty refractories are used

Glass Tanks

Flux line, throat, port neck, crown, regenerator.

EAF Steel-Making

EAF lining, ladle, tundish slide gate.

Blast Furnace

Hearth bottom, tap-hole, cooling stave back-up.

Aluminium Electrolysis

Cell cathode blocks, side walls.

Petrochemical

Reformer tube blocks, cracker reactor refractory.

Ultra-High T

Induction furnaces, plasma reactors, aerospace test.

Datasheet

Download specialty refractories datasheet

Complete property table for AZS, premium corundum, carbon-graphite and zirconia grades — chemistry, density, RUL, fused-cast tolerances.

Download PDF (datasheet)

Need a quote?

Project-based pricing on specialty grades

Send your zone, drawing, target chemistry and quantity — specialty refractories quoted on a project-by-project basis with engineering support.

Request a Quote

Related categories