Pulp & Paper Coating & Repair Services

Drive and feed rollers lose their grip as the cover glazes, wears, or tears. Slip and mistracking follow, and throughput drops with them. We resurface rollers cold with a high-grip elastomer that rebuilds the friction profile. The roller goes back into the drive without a trip out for OEM re-covering. Pumps and fans erode on the same principle. Particle-laden flow strips metal off impellers, blades, and housings until clearances open and efficiency falls away. Our crew rebuilds the lost metal and recoats the wear surfaces with ceramic-filled coatings sized to the duty, so the part comes back running closer to its design point, and the rebuild happens in the maintenance window rather than waiting on a casting.

Where flow-induced metal loss and chemical attack stack on top of each other, fresh steel keeps getting exposed and eaten away. We coat those surfaces with systems rated for the combined erosion and chemical load, so one cold-applied recoat holds back both failure modes.

Kraft digesters carry hot sulfate-rich liquor that thins linings and corrodes welds and access ports over a single campaign. We apply a high-temperature immersion lining matched to the service, and overlay the spots where acids drive the failure. No liner-replacement weld cycle, and no plate swap. Evaporators, de-aerators, and autoclaves run hot and wet, which breaks ordinary coatings down and corrodes the shell at welds and tube zones. Those get lined with an immersion-grade system rated for the service temperature, applied cold during the outage.

Scrubbers and absorber towers take acidic condensate and wet chemical attack that thin shell steel at the internals and the liquid distribution zones. We line the tower interior with a chemical-resistant cold-cure system and recoat it during the scheduled outage, with no hot work. Belzona high-temperature and acid-resistant series back this lining work. What the mill cares about is a vessel that finishes the next campaign rather than coming out early.

Bulk material sliding through chutes, hoppers, silos, and mill liners wears them out faster than any replacement cycle keeps up with. We line those surfaces with cold-applied ceramic-filled coatings sized to the particle and the flow. The lining recoats in the maintenance window and stretches plate life well past where bare steel would quit. Rubber linings strip off chutes, hoppers, and slurry equipment the same way, and we rebuild them cold on site, so the mill gets its abrasion protection back without pulling the part for re-lining.

Conveyor belts gouge, rip, and wear through their top covers, spilling cargo and threatening to stop the line. We rebuild the damaged area cold with a flexible elastomer that bonds to the existing rubber, and the belt runs again with no splice and no full replacement. Where wear plates and bars sit on irregular backing, steel shims leave point contact that distorts the plate inside a shift. We pour a cold-cure compound that fills the gap and transfers load across the full area, seating the plate flat with no machining of the structure.

The through-line is uptime. Worn rollers get their grip back, and eroded pumps and fans run closer to spec. Lined vessels finish their campaigns. Torn belts and rubber go back to work with no replacement order behind them. Almost none of it needs cutting, welding, or a hot-work permit inside a running mill.

BHI Coatings schedules around your outage, mobilizes from Alvin, and runs surface prep, repair, coating, and lining as one field package. When a roller cover lets go between turnarounds or a digester needs attention out of cycle, the 24-hour on-call crew gets the equipment back into the line.