No Hot Work | High-Temp Resistant | Chemical Resistant
Pulp and Paper Mill Repair Solutions
Cold-applied repair composites and coatings that withstand the harsh chemicals, high temperatures, and erosive slurries in pulp and paper operations.
The Challenge
Pulp and paper mills operate in some of the harshest industrial environments. White liquor, black liquor, chlorine dioxide, and caustic attack equipment relentlessly. Fan pumps and stock pumps erode from abrasive fiber slurries. Digesters, evaporators, and recovery equipment face simultaneous chemical attack and high temperatures.
The combination of erosion-corrosion, elevated temperatures, and aggressive chemicals destroys pumps, valves, and process equipment. Traditional repairs mean waiting weeks for OEM parts, extended shutdowns, and hot work permits in confined spaces.
Every hour of unplanned downtime costs thousands in lost production. Mills need solutions that restore equipment fast and protect against the specific chemicals in their process.
The Belzona Solution
Belzona polymeric materials are engineered for the pulp and paper industry. Our cold-applied composites rebuild eroded pumps in place, protect against chemical attack at elevated temperatures, and restore equipment to service — often without removing it from the line.
High-temperature ceramic coatings like Belzona 1391T withstand continuous immersion up to 266°F and steam-out to 410°F. They resist the specific chemicals in your process — from caustic white liquor to acidic bleach plant environments.
Belzona Technology Northwest supports pulp and paper operations throughout Washington, Oregon, Alaska, and Northern Idaho with product supply, application training, and on-site technical assistance.
Mill Types and Process Areas We Serve
Belzona products are trusted across pulp and paper operations — including but not limited to:
Kraft Mills
Digesters, recovery boilers, evaporators, lime kilns, causticizing equipment
Bleach Plants
ClO₂ generators, washers, mixers, towers, chemical storage tanks
Paper Machines
Headboxes, fan pumps, stock pumps, refiners, pressure screens
Recycled Fiber / OCC
Pulpers, cleaners, screens, deinking equipment, stock chests
Recovery and Recaust
Black liquor equipment, green liquor clarifiers, white liquor tanks
Utility and Effluent
Cooling towers, wastewater treatment, secondary containment, floors
Have a different process area? Call us at (425) 610-4902 — we have solutions for virtually any mill environment.
Problems We Solve
Common failure modes that shut down production and extend outages — and more:
Pump Erosion-Corrosion
Fan pumps and stock pumps face simultaneous attack from abrasive fiber slurries and corrosive chemicals. Ceramic composites rebuild and protect.
High-Temperature Chemical Attack
Evaporators, digesters, and liquor heaters face both heat and caustic/acidic environments. High-temp coatings resist up to 266°F immersion.
Impeller and Casing Wear
Thick stock and fiber slurries erode pump impellers and casings. Rebuild worn profiles to OEM specifications without replacement.
Bleach Plant Corrosion
Chlorine dioxide and hypochlorite attack metal and concrete. Chemical-resistant coatings provide long-term protection.
Digester and Tank Degradation
White liquor and black liquor degrade digester shells and tank linings. Repair and protect without vessel removal.
Containment and Floor Damage
Chemical spills attack concrete containment areas and floors. Chemical-resistant coatings meet environmental requirements.
Chemical Resistance for Pulp and Paper
Belzona high-temperature coatings resist the specific chemicals found in pulp and paper operations. Contact us for specific chemical/temperature combinations.
| Chemical | Concentration | Temperature | Belzona |
|---|---|---|---|
| White Liquor (NaOH + Na₂S) | Process | 180°F | ✓ |
| Black Liquor | Process | 200°F | ✓ |
| Green Liquor | Process | 180°F | ✓ |
| Sodium Hydroxide (Caustic) | 50% | 180°F | ✓ |
| Chlorine Dioxide (ClO₂) | Bleach plant | 160°F | ✓ |
| Sulfuric Acid | 50% | 140°F | ✓ |
| Sodium Hypochlorite | 12% | 100°F | ✓ |
| Tall Oil | Process | 200°F | ✓ |
| Turpentine | Process | 140°F | ✓ |
| Steam | — | 410°F | ✓ |
This is not an exhaustive list. Contact us at (425) 610-4902 for specific chemical/temperature/concentration combinations.
In-Place Pump Repair vs. OEM Replacement
When a critical pump fails, waiting weeks for OEM parts is not an option. Belzona enables in-place repair that gets you back online fast — with upgraded protection.
| Consideration | OEM Replacement | Belzona In-Place Repair |
|---|---|---|
| Lead Time | 4-12 weeks | Same day start |
| Hot Work Permit | Often required | Not required |
| Pump Removal | Required | Not required |
| Downtime | Days to weeks | Hours to 1-2 days |
| Cost | $15,000 - $100,000+ | Fraction of replacement |
| Erosion Protection | OEM material only | Ceramic composite upgrade |
| Chemical Resistance | Depends on alloy | Broad spectrum to 266°F |
Continuous Immersion
266°F
high-temperature service
Pull-Off Adhesion
4,260 psi
at elevated temperature
Steam-Out
410°F
no blistering or cracking
Performance data from Belzona 1391T specification sheet (FN10034).
Products for Pulp and Paper
Repair composites, high-temperature coatings, and chemical-resistant linings for mill equipment.
Belzona 1391T (Ceramic HT)
High-temperature ceramic coating for erosion-corrosion protection. Continuous immersion to 266°F, steam-out to 410°F. Ideal for pumps, heat exchangers, and evaporators.
Belzona 1111 (Super Metal)
Multi-purpose repair composite for rebuilding eroded and corroded metal surfaces. Ideal for pump casings, impellers, and equipment damaged by cavitation.
Belzona 1311 (Ceramic R-Metal)
Ceramic-filled epoxy for high-temperature erosion resistance. Protects against particle erosion in slurry handling equipment up to 250°F.
Belzona 1341 (Supermetalglide)
Fluid-flow coating that reduces friction and improves pump efficiency. Creates a smooth, erosion-resistant surface that resists fiber buildup.
Belzona 4311 (Magma CR1)
Chemical-resistant coating for concrete containment areas. Protects floors and bunds from chemical spills common in pulp and paper operations.
Belzona 2141 (ACR-Fluid Elastomer)
Flexible elastomeric coating for rubber-lined equipment repair. Ideal for repairing damaged linings in pulp processing equipment.
Need help selecting the right product? Call (425) 610-4902
Case Study
Oregon Paper Mill Fan Pump Repair
The Challenge
A paper mill in Oregon was experiencing severe pitting and erosion on a critical fan pump. The corrosive process fluids had created deep pits in the pump casing, reducing efficiency and threatening pump failure. Replacing the pump would require weeks of lead time and significant cost.
The Solution
The maintenance team used Belzona 1111 to rebuild the pitted areas and restore the pump casing to its original profile. They then applied Belzona 1391T ceramic coating to protect against future erosion and corrosion. The entire repair was completed in-place without removing the pump.
The Results
- +Pump restored to full efficiency
- +Long-term protection against erosion
- +Completed during scheduled shutdown
- +Fraction of replacement cost
Products: Belzona 1111, 1391T
Location: Oregon
Reference: KHIA 5352
Repair Process
1. Pitting
2. 1111 Pit Repair
3. First Coat 1391T
4. Ready for service
Frequently Asked Questions
Can Belzona handle white liquor and black liquor environments?
Yes. Belzona high-temperature coatings are specifically designed for the caustic and sulfide environments found in kraft mill recovery operations. Contact us for specific concentration and temperature requirements.
How long does a pump repair take?
Most pump repairs can be completed within a scheduled shutdown window. Cure times vary by product and temperature, but many repairs are ready for service within 24-48 hours. We can help plan repairs to fit your outage schedule.
What temperature can Belzona coatings withstand?
Belzona 1391T is designed for continuous immersion up to 266°F (130°C) and can withstand steam-out procedures up to 410°F (210°C). Other products in the range have different temperature limits — contact us for specific applications.
Is Belzona FDA compliant for food-grade paper production?
Yes. Belzona 1391T meets FDA 21 CFR 175.300 requirements for food contact and is USDA compliant for incidental food contact surfaces. This makes it suitable for tissue mills and food-grade paper operations.
Do you provide on-site support for mill applications?
Yes. We provide product supply, application training, and on-site technical assistance for pulp and paper operations throughout Washington, Oregon, Alaska, and Northern Idaho.
Pulp and Paper Applications
Pumps and Rotating Equipment
- +Fan pump repair
- +Stock pump rebuilding
- +Impeller restoration
- +Casing erosion repair
- +Cavitation protection
Digesters and Vessels
- +Digester shell repair
- +Chemical tank lining
- +White liquor tank protection
- +Black liquor equipment
- +Bleach plant vessels
Infrastructure
- +Pipe repair and protection
- +Secondary containment
- +Concrete floor protection
- +Heat exchanger repair
- +Chute and hopper lining
Need a Solution for Your Mill?
Describe your equipment challenge and we will recommend the right Belzona products for your application. Technical support for pulp and paper operations throughout Washington, Oregon, Alaska, and Northern Idaho.
Belzona Technology Northwest is the exclusive authorized Belzona distributor for Washington, Oregon, Alaska, and Northern Idaho. Product sales, technical support, and application training for pulp and paper operations throughout the Pacific Northwest.