Alumina Lining Bricks
Thick-wall alumina bricks, mechanically keyed and curved to the shell, for mill linings, cyclone cones and heavy-duty applications.
When the lining has to be thick — 40 mm and up — thin tiles stop being practical. Bricks give you mass, a mechanical key between neighbours, and a shape that can be matched to the curvature of a mill shell or a cyclone cone.
Where bricks are the right answer
- Ball and tube mill shells. Bricks, keyed to each other and to the shell, withstand the continuous tumbling load that would debond tiles.
- Cyclone and separator cones. Curved bricks follow the cone taper so that the working surface is continuous.
- Bunker and thick-wall chutes. Where 50–75 mm of ceramic is needed to give the service interval.
- Fan and pump housings. Thick sections resisting erosion by fine particles at high velocity.
Thickness and profile
| Item | Range | Comment |
|---|---|---|
| Thickness | 40 – 75 mm | Below 40 mm tiles are usually more economical |
| Plan dimensions | 100 × 100 to 250 × 150 mm | Set by the curvature and the laying pattern |
| Curvature | to shell radius | Each course is formed to the measured radius |
| Keys and grooves | to drawing | Tongue-and-groove or dovetail between courses |
| Fixing | weld-in studs / bolts | Adhesive is not used at this thickness |
| Grade | AL-95 / 99 | AL-92 is rarely used above 30 mm |
| Tolerance | ± 0.5 mm as-fired | Ground faces available to ± 0.1 mm for close joints |
Why the curvature matters
A flat tile laid on a curved shell leaves a gap. Under load the tile rocks on its edges, the bond line fatigues, and within a few hundred hours tiles begin to come away. Forming each course to the measured shell radius removes that rocking load entirely — which is why we ask for the shell diameter, or the old lining, before quoting a mill relining.
Send the mill diameter, the old brick dimensions and the shell condition. If the shell is deformed we will say so — welding bricks onto a distorted shell is a waste of the lining.
Supply format
- Supplied as a numbered installation set with a laying plan
- Each course labelled with its position and the direction of lay
- Batch test report and dimensional record with the shipment
- Supervision and installation guidance available for large relines
Specify a mill or cyclone relining
Mill diameter, old lining dimensions and required service interval. We will propose thickness, grade and curvature.
Send us your drawing — get a quotation with a firm lead time
PDF, DWG, STEP, IGES or a photo with the critical dimensions marked. Engineering review within one working day.