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Recycled Fiber Processing Line Commissioned in Vietnam
Xuan Mai Paper and ANDRITZ AG deploy a second deinking pulp line to expand recycled tissue production capacity and improve resource efficiency at Ho Chi Minh City mill.
www.andritz.com
Xuan Mai Paper and ANDRITZ AG have implemented a second deinking pulp (DIP) line in Vietnam, focused on processing recovered paper into high-quality recycled pulp for tissue production. The installation strengthens industrial automation and resource efficiency in recycled fiber processing.
Context of the Cooperation
Xuan Mai Paper, a Vietnamese tissue producer, partnered with ANDRITZ AG, an Austrian supplier of pulp and paper technologies, to expand its recycled fiber processing capacity. The cooperation builds on a previous DIP line commissioned in 2020.
The project addresses increasing demand for recycled tissue products and the need for stable processing of mixed office waste (MOW), which presents variability in fiber composition and contamination levels. Cooperation was required to combine process engineering, equipment supply, and integration into an existing mill with spatial constraints.
Technical Solution and Responsibilities
The installed DIP line is designed for a throughput of 75 tonnes per day and processes 100% mixed office waste. ANDRITZ supplied a complete stock preparation system, including key process stages:
- Drum pulping for continuous fiber separation and contaminant removal
- SelectaFlot flotation system for ink particle separation based on surface chemistry and air bubble adhesion
- Ultra-high dispersion to mechanically treat fibers and reduce residual contaminants
- High-consistency peroxide bleaching to increase brightness through controlled oxidative reactions
The system is engineered to maintain consistent pulp quality and maximize fiber recovery while minimizing chemical and energy consumption. ANDRITZ was responsible for process design, equipment supply, layout engineering, and commissioning support.
Deployment and Integration
The DIP line was installed at Xuan Mai Paper’s mill in Ho Chi Minh City. Due to limited available space, the system required a customized layout, including a tailor-made drum pulper adapted to the existing infrastructure.
ANDRITZ coordinated installation and start-up activities, ensuring process alignment with upstream and downstream systems. The integration approach minimized disruption to ongoing production and enabled a controlled transition to full operation.
Applications and Use Cases
The primary application is recycled tissue production, where consistent fiber quality and brightness are critical for product performance. The system supports:
Deployment and Integration
The DIP line was installed at Xuan Mai Paper’s mill in Ho Chi Minh City. Due to limited available space, the system required a customized layout, including a tailor-made drum pulper adapted to the existing infrastructure.
ANDRITZ coordinated installation and start-up activities, ensuring process alignment with upstream and downstream systems. The integration approach minimized disruption to ongoing production and enabled a controlled transition to full operation.
Applications and Use Cases
The primary application is recycled tissue production, where consistent fiber quality and brightness are critical for product performance. The system supports:
- Processing of mixed recovered paper streams
- Production of deinked pulp for hygienic paper products
- Improved contaminant removal for downstream converting processes
This type of digital infrastructure and process integration is relevant for pulp and paper mills aiming to increase recycled content while maintaining product standards.
Results and Operational Impact
The second DIP line increases Xuan Mai Paper’s recycled pulp capacity and enhances process stability through standardized unit operations. The combination of flotation, dispersion, and bleaching improves fiber utilization and brightness control.
Operational benefits include reduced variability in pulp quality, improved resource efficiency, and better integration of recycled raw materials into continuous tissue production processes.
Edited by an industrial journalist, Sucithra Mani, with AI assistance.
www.andritz.com
Results and Operational Impact
The second DIP line increases Xuan Mai Paper’s recycled pulp capacity and enhances process stability through standardized unit operations. The combination of flotation, dispersion, and bleaching improves fiber utilization and brightness control.
Operational benefits include reduced variability in pulp quality, improved resource efficiency, and better integration of recycled raw materials into continuous tissue production processes.
Edited by an industrial journalist, Sucithra Mani, with AI assistance.
www.andritz.com
