Design of processes Introduction to stock preparation process design The technology of processing recycled fibres is more complex than that of virgin fibres (chemical and mechanical fibres). Besides contaminants, recovered paper always contains some fillers and coating pigments that can vary in type and composition. Because of the technical layout and stock losses involved, complete
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Design of processes
Content
Recycled fibre
- Legislation
- Sources and quality of paper for recycling
- Recyclability of paper and board products – Deinkability
- Recycling versus recyclability
- Technical aspects of recycling
- Relevance of recyclability
- Repulpability and deinkability
- Deinkability test methods
- EPRC deinkability assessment
- Deinkability of different printed products
- Removability of adhesive applications
- EPRC assessment on removability of adhesive applications in graphic paper products
- Unit operations and equipment in recycled fibre processing
- Design of processes
- Design principles for stock preparation processes
- Process design for graphical grades, news print
- Process design for tissue
- Process design for board and packaging grades
- Reject and Sludge handling for graphical and tissue applications
- Reject and Sludge handling for board and packaging applications
- Water management
- Additives
- Deinking
- Bleaching of deinked pulp
- Process water treatment
- Sticky control – detackification
- Enzymatic solution for recycled fibres
- Papermaking potential of recycled fibre
- Differences between virgin and recycled fibre
- Repeated (manifold) recycling experiments
- Multiple papermaking with recycled fibres
- Modelling of fibre age distribution
- Special request of recycled fibre furnish in papermaking
- Effects of recycled fibre in papermaking
- Challenges of increased recycled fibre utilisation
Authors & references
Authors:
Falk Albrecht, Sebastian Schuster, Fanny Bader, Eckhard Gutsmuths
References:
- Göttsching, L. 1975. Recycling in der Papierindustrie. Wochenblatt für Papierfabrikation. Vol.103, no 19, p.687.
- Ortner, H.; BergfeId, D. 1991. ASEAN Symposium on the Pulp & Paper Industry. Recycling of waste paper, present status -future development.
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This page has been updated 17.11.2021
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