Container · Float · Fibre · Tableware
Refractories for Glass Furnace Industry
Glass melt is one of the most aggressive industrial environments — sustained temperatures above 1500 °C combined with chemically active molten silicates that will dissolve nearly any conventional refractory. Fused-cast AZS remains the gold standard for tank walls, throat and flux line; silica reigns in crowns thanks to its low creep at high temperature; and zircon, mullite and sillimanite handle superstructure and regenerator duty. firebrickssource.com — a Rajkot, Gujarat, India based manufacturer-cum-merchant exporter — supplies the full glass refractory family for container, float, fibre, tableware and pharmaceutical glass plants, with low-defect-risk products that protect glass quality across the 8 – 12 year campaign typical of modern furnaces.
Wear mechanisms · Glass tank
Pain points in glass-furnace refractories
Tank flux-line erosion
Convection currents accelerate corrosion at the metal-air interface. Solution: fused-cast AZS-41 bricks with low exudation and tight pore structure.
Crown stoning & creep
Crown sag and dripping inclusions ruin glass quality. Solution: premium silica crown bricks with controlled tridymite/cristobalite ratio.
Matched refractory products
Recommended refractories for glass furnaces

Fused-Cast AZS Bricks
AZS-33, AZS-36, AZS-41 for flux line, tank walls, throat and bottom paving. Glass-contact qualified.

Silica Crown Bricks
Premium silica for crowns and regenerator upper checker — outstanding creep resistance above 1600 °C.

Zircon & Zircon-Mullite
Tank bottom paving, throat, feeder channels. High zirconia content for thermal stability and low blistering.

Mullite & Sillimanite
Superstructure, port necks, throat covers. Low creep, low alkali reactivity at 1500 °C.

Corundum (Premium HA > 90%)
Severe-service tank zones, premium feeder linings. Ultra-low porosity, excellent corrosion resistance.

Checker / Regenerator Bricks
Cruciform and hexagonal checker shapes — silica, magnesia and AZS variants, by thermal layer.
Zone-by-zone specification
Application zones — glass furnaces
| Furnace zone | Recommended brick | Temperature °C | Key property |
|---|---|---|---|
| Flux line | AZS-41 fused-cast | 1600 | Glass corrosion |
| Tank walls | AZS-36 | 1600 | Long-term life |
| Tank bottom | AZS-33 / zircon | 1600 | Bottom drain resistance |
| Throat | AZS / zircon-mullite | 1550 | Erosion + thermal cycling |
| Crown | Silica | 1650 | Creep resistance |
| Superstructure | Mullite / sillimanite | 1500 | Thermal stability |
| Regenerator (high) | Silica | 1500 | Creep |
| Regenerator (low) | Magnesia / AZS | 1400 | Chemical attack |
| Port neck | AZS / mullite | 1500 | Combined load |
Related categories
Adjacent product families
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Send your tank pull, fuel and oxidation profile — we'll specify AZS grade, silica class and regenerator zoning for an 8 – 12 year campaign.
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