Bricks · Silicon Carbide Bricks
SiC bricks for high-conductivity, high-abrasion service
Silicon carbide bricks combine extreme abrasion resistance with high thermal conductivity and excellent thermal-shock tolerance. Specified anywhere a refractory has to dissipate heat (aluminium pot cathodes, zinc retorts) or survive abrasive flue paths (incinerator hot zones, biomass and WtE boilers). Stocked in nitride-bonded and clay-bonded grades.
85-95%
SiC Content
Si3N4
Nitride-Bonded
Low Wear
Abrasion Resistant
High λ
Thermal Conductivity
Overview
Silicon Carbide Bricks — what they are, when to specify
Silicon carbide refractory bricks are produced by bonding SiC grains with one of several matrix systems — nitride (Si3N4), oxynitride, clay or self-bonded SiC. Each bond family trades off oxidation resistance, mechanical strength and cost. Nitride-bonded SiC is the gold standard for aluminium cell sidewalls and incinerator hot zones; clay-bonded SiC suits waste-to-energy boiler tube shielding.
Grades
Stocked grades — pick by service condition
Indicative properties only. Final specification is set per application after we review your operating envelope.
| Grade | Composition | Service Limit | Typical Application |
|---|---|---|---|
| Nitride-Bonded SiC (Si3N4-SiC) | SiC 75%, Si3N4 25% | 1500 °C | Aluminium pot sidewalls, zinc retorts |
| Clay-Bonded SiC | SiC 85-92% | 1450 °C | WtE boiler tube tiles, biomass furnace lining |
| Oxynitride-Bonded SiC | SiC 75%, Si2ON2 bond | 1550 °C | Aluminium cell sidewalls (premium) |
| Self-Bonded (Recrystallised) SiC | SiC ≥99% | 1650 °C | Kiln furniture, burner tubes, beams |
| SiC-Mullite Composite | SiC 30%, Al2O3 60% | 1500 °C | Cement kiln nose-ring, calcining zones |
Standard brick shapes plus engineered components — burner tubes, support beams, batts and posts for kiln furniture. SiC-bonded castable equivalent available for cast-in-place applications.
Datasheets available on request — email punesales@chaneyco.com with your specification and we will send the matching PDF.
Applications
Where silicon carbide bricks are specified
Non-Ferrous
Aluminium reduction cell sidewalls, zinc retorts, copper anode furnaces
Power & Energy
WtE incinerator hot zones, biomass furnaces, AFBC boilers
Cement & Lime
Kiln nose-ring, preheater cyclones, calciner abrasion zones
Glass & Ceramics
Kiln furniture, burner tubes, support beams
Why Chaneyco
Three reasons buyers source silicon carbide bricks from us
Stocked at Chakan, dispatched fast
Silicon Carbide Bricks are held at our Chakan plant in Pune. Standard grades dispatch same-day to plants in the Pune industrial belt and within days pan-India by road or rail.
Spec advice before quote
Choosing the right grade for the operating envelope makes a much bigger lifecycle-cost difference than haggling on the cheapest grade. Our technical team will recommend by zone before quoting.
ISO 9001:2015 audit-ready
Every batch ships with composition and dimensional QC records, supported by our ISO 9001:2015 certification (Cert. 11553, AQSR / USAC accredited, valid through 17 Sept 2027).
Frequently Asked
Silicon Carbide Bricks questions, answered
Why is nitride-bonded SiC preferred for aluminium cells?
The Si3N4 bond resists attack by molten aluminium and bath fluorides far better than oxide bonds, and the SiC grain network conducts heat away from the sidewall — critical for the freeze-line that protects the cathode. Cell life on nitride-bonded sidewalls runs significantly longer than on oxide-bonded alternatives.
Is SiC suitable for sulphur-bearing flue gas?
SiC oxidises in wet, sulphur-bearing flue paths above ~1100 °C. For WtE and biomass boilers we recommend clay-bonded SiC tiles in cooler zones and oxide-bonded SiC composites in hotter zones — and we run an oxidation-resistance check before quoting.
Can you supply SiC kiln furniture?
Yes. Recrystallised SiC batts, posts, beams and rollers for ceramic and technical-ceramic kilns. Lead time depends on shape; talk to us with a drawing.
Talk to a Refractory Engineer
Tell us about your application
Share the basics — furnace type, operating temperature, atmosphere, the lining zone you are specifying. Our technical team responds within one working day with grade recommendation, indicative quote and lead time.