High-alumina brick — 75 grade
Aluminosilicate bricks
Furnace walls and arches; hot-blast and high-temperature equipment, subject to zone design.
- Al₂O₃ (%)
- ≥75
- Refractoriness (°C)
- ≥1790
- RUL at 0.2 MPa (°C)
- ≥1520
Catalogue reference values
Application focus
Refractories for Steel Reheating & Hot-Blast Equipment
Reheating furnaces, hot-blast equipment and local repair areas need different lining discussions. Begin with the equipment position and current lining condition, then review brick, castable, repair or insulation options for the actual exposure.
Steel reheating & hot-blast equipment
A repair location, a photo and your destination are enough to start. Tell us whether you need materials only or would also like to discuss installation and maintenance support.
Start with the lining position
Walls, arches and hot-blast positions
High-alumina brick enquiries should identify the wall, arch or other equipment position, existing brick shape and operating cycle. Discuss mechanical loading, thermal cycling and local chemical exposure alongside the material grade. Alumina content alone does not define the completed lining’s performance.
Cast linings and local repairs
For castable or repair-mix needs, describe the worn area, repair depth, surrounding lining and available equipment. Identify whether the repair is planned cold or hot; installation methods and product options need to match that decision. Include the shutdown window when it is known.
Insulation and sealing details
Fibre boards or blankets can be discussed for backup layers, seals and suitable lining positions. Clarify the layer arrangement, gas movement, anchoring and grade-specific safety information. Direct process contact or heavy mechanical exposure requires its own material review.
Products to discuss
These are starting points for a selected position. Confirm the grade, exposure and installation requirements for your job.
Product illustrationRefractory castables
Monolithics & jointing materials
Kiln hoods, coolers, ducts, furnace linings and local repairs.
Tell us your application to discuss product options.
Product illustrationGunning & repair mixes
Monolithics & jointing materials
Local furnace maintenance and scheduled shutdown repairs.
Tell us your application to discuss product options.
Product illustrationFibre boards & blankets
Insulation materials
Backup insulation, seals and suitable furnace-lining positions.
Tell us your application to discuss product options.
Useful details for the next conversation
Share what you have. Complete drawings and technical details are not required to start.
- Furnace type, lining zone and existing material
- Operating cycle and the damage or repair area
- Current shape, drawing or photos and approximate quantity
- Shutdown plan, delivery destination and contact details
Common enquiry questions
Does this page cover a complete ladle or electric-arc furnace lining?
The options here focus on reheating, hot-blast equipment and defined repair or insulation positions. A molten-steel-contact, ladle or electric-arc furnace requirement needs its own equipment and zone review.
Can a small maintenance enquiry start with photos?
Yes. Send photos showing the location and damage, a short description, existing material if known and destination. The technical team can then identify which additional dimensions or operating details matter.
Can insulation be selected by a temperature label alone?
The layer position, atmosphere, gas movement, support and exposure also matter. Classification temperature and continuous-use guidance are different; use grade-specific information for the final selection.
Related buying guides
From installation to the next shutdown
Connect original lining design and installation support with commissioning, maintenance and replacement planning.
Refractory bricks or castables: where does the discussion start?
Understand the basic forms before discussing a lining requirement.
Details to discuss before supply
Keep specifications, documentation and delivery requirements clear.
Start your enquiry
A repair location, a photo and your destination are enough to start. Tell us whether you need materials only or would also like to discuss installation and maintenance support.