Ball Mill and Crusher Liner Rebuild
Worn mill liner backing and crusher transfer points rebuilt so the plates sit on a solid seat and the shell is protected from impact.
A job completed with Belzona. This describes what the Belzona system does and how it goes on, not a record of a specific project by this distributor.
The challenge
The liner backing and feed-end housing of a mill had worn through behind the plates, so the wear plates no longer sat on solid metal. With the backing gone, every impact worked the bolts loose instead of being carried by the shell, and the play kept getting worse between repairs. At the crusher transfer points the metal had ground down thin enough that impact was starting to reach the shell directly. Left alone, the loose plates and the thinning shell put the mill at risk of a failure that would pull it out of service on no notice.
The Belzona approach
Work starts with cleaning the backing and feed-end housing areas back to sound metal so the rebuild has something to key to. Then the worn shell metal and the housing are rebuilt back to profile so the wear plates bed on a solid seat instead of bridging a void, which lets the impact be carried by the shell rather than working the bolts loose. At the transfer points the thinned metal is blasted and an abrasion-resistant lining keyed to the duty goes on, protecting the shell and giving the liners a sound surface to ride against through the grinding cycle. Where a face flexes or takes repeated impact, a cold-applied elastomer is used instead.
- Assess backing and transfer pointsThe liner backing, feed-end housing, and crusher transfer points are inspected to find where the metal has worn through and where the plates have lost their seat.
- Clean and prepCleaning and blasting take the backing, housing, and transfer-point metal back to a sound, profiled surface so the rebuild and lining bond properly.
- Rebuild the shell and seatThe worn shell metal and housing are rebuilt back to profile so the wear plates bed on a solid seat instead of bridging a void.
- Bed plates and line wear facesThe wear plates bed back down on the rebuilt seat and the transfer points are lined with an abrasion-resistant system keyed to the duty, using a cold-applied elastomer where a face flexes or takes repeated impact.
- Return to serviceThe rebuilt areas cure and are checked, then the mill goes back ready to run through the grinding cycle.
The result
- Worn liner backing and shell metal rebuilt in place so the wear plates bed on a solid seat
- Impact carried by the shell instead of working the liner bolts loose
- Crusher transfer points lined and protected so the shell rides against a sound wear face
- Mill returned to service by factory-trained and factory-certified Belzona applicators
In the field
More Mining, Quarrying & Bulk projects
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Apron Feeder Wear Plate Shimming
Uneven wear plates shimmed with cast conforming backing to stop the pounding, then lined for abrasion where the material rides.
Crusher Pump Volute Abrasion Lining
Worn slurry pump volute rebuilt and lined along the wear path with an abrasion-resistant composite matched to the feed, no new casting required.
Seeing something like this?
Belzona Houston is the authorized Belzona distributor for South Texas and the Gulf, based in Alvin, Texas, we’ll survey your equipment and recommend the right cold-applied Belzona system, with 24-hour support.