- Recycled fiber
- Stock preparation
- Approach flow system
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Board and paper machines
- New lines
- Rebuilds
- Approach flow system
- Headbox
- Forming
- Pressing
- Drying
- Process ventilation
- Sizing
- Coating
- Chemical systems
- Coating drying
- Calendering
- Reeling
- Winders and roll handling
- Pilot trials
- Paper and board grades
- Sustainable performance
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Services for board and paper
- Spare parts
- Maintenance and shutdown services
- Outsourcing services
- Production consumables
- Process support and optimization
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Process and automation upgrades
- Paper machine automation services
- Automation upgrades and roadmapping services
- Process improvements
- Industrial internet and remote solutions
- Roll services
- Automation services
- Service agreements
- Valmet's way to serve
- Service Centers
- Automation for board and paper
- Board and paper
- Recycled fiber
- OCC lines
- Bale handing and pulping
- Drum pulping
Drum pulping delivers high pulping efficiency in recycled fiber applications
Valmet Drum pulper’s high consistency treatment enables efficient fiberizing and ink detachment even from very contaminated furnish. The gentle slushing action of a drum pulper does not break up impurities, making them easier to remove in the subsequent process stages. Continuous operation stabilizes and improves the efficiency of the entire process, ensuring consistent pulp quality.
The key slushing factors, time and impact energy, are tuned by adjusting the roll angle and speed to create the optimal vertical and horizontal flows inside the pulper. This makes it possible to optimize the treatment of different raw materials for various end-use requirements. The screen section is equipped with multiple dilution spray piping that also broadens the pulper’s operating range.
Valmet’s innovative drum pulper produces two fractions – fine accept and coarse accept. Two different hole size zones and two accept vats enable screening while slushing.