What Is Grade II High Alumina Double Hole Roller Hole Brick
Our grade II high alumina double hole refractory brick is a custom shaped refractory block specially engineered for roller kiln walls. It features two round holes with 100mm inner diameter, designed to pass and support ceramic roller rods inside continuous roller kilns. Made from bauxite-based grade II high alumina raw material with Al₂O₃ content 60–75%, this brick is pressed and sintered under high temperature for stable physical performance. It acts as both a support component for rotating rollers and a sealing lining to cut down heat loss and hot air leakage from the kiln body.
Core Performance Advantages
This double hole high alumina brick balances cost and high-temperature performance perfectly. It delivers reliable thermal shock resistance to withstand repeated heating and cooling cycles during kiln operation, avoiding easy cracking or peeling. Its high hot compressive strength keeps the brick stable under long-term high working temperature and mechanical load. The precise hole machining guarantees smooth roller rotation without jamming. Compared with premium mullite bricks, grade II high alumina options offer an economical solution for standard continuous firing lines without sacrificing key service life.
Main Industrial Applications
The 100mm double hole roller brick is widely installed in roller kilns for multiple industries. Common scenarios include ceramic tile production lines, lithium battery cathode and anode material sintering kilns, magnetic material calcination, and powder material continuous firing furnaces. It fits medium and high-temperature roller kiln sections where roller supports and wall sealing are required. We also support custom hole sizes and overall dimensions if your kiln design cannot match the standard 100mm aperture.
Get Your Technical Quote & Samples
If you are sourcing stable roller hole refractory bricks for new kiln construction or maintenance replacement, send us your drawing, working temperature and order quantity. We can provide complete technical data sheets, free sample service and bulk delivery plan. Our factory has rich experience manufacturing shaped high alumina refractories for global kiln customers. Submit your inquiry today to get a competitive quotation and professional refractory solution.
Post time: Nov-06-2026
