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Taking the Guesswork Out of Decarbonizing Pulp and Paper Mills, Paper360º September/October 2024

TAPPI Journal Summaries, Paper360º September/October 2024

Optimizing OCC refining with defloccing, TAPPI Journal April 2025

ABSTRACT: Subjecting pulp to a high shear zone immediately after refining results in more efficient refining. This phenomenon was originally observed to benefit softwood pulp refining. It was attributed to floc reduction based on floc measurements in mill refiners and the observation of reduced headbox plugging. Hence, this phenomenon has been termed “defloccing.” The present work shows this technology also benefits refining of North American old corrugated containers (OCC). The combined results of several mill trials with OCC defloccing demonstrate the interactions between OCC refining intensity, defloccing technology, and other state-of-the-art refining improvements. At the same refining intensity, defloccing OCC on 100% recycled machines increases OCC refining efficiency by 15%, with greater efficiency improvement on machines that use softwood as well as OCC. Furthermore, it is shown that the benefits of defloccing are additive to refining improvements made in the refining zone of a refiner plate. Most OCC refiner plate designs can therefore benefit from the addition of a defloccing feature.

Influence of kraft pulping on the kinetics of oxygen delignification, TAPPI JOURNAL, February 2000, Vol. 83(2)

Influence of kraft pulping on the kinetics of oxygen delignification, TAPPI JOURNAL, February 2000, Vol. 83(2)

Energy-efficient pre-evaporation of bleach plant filtrates economic evaluation of various options, TAPPI JOURNAL, September 2000, Vol. 83(9)

Energy-efficient pre-evaporation of bleach plant filtrates economic evaluation of various options, TAPPI JOURNAL, September 2000, Vol. 83(9)

Qualification of welding procedures for duplex stainless steels, TAPPI JOURNAL, September 2000, Vol. 83(9)

Qualification of welding procedures for duplex stainless steels, TAPPI JOURNAL, September 2000, Vol. 83(9)

Design and operation of a woodwaste cogeneration plant, TAPPI JOURNAL, September 2000, Vol. 83(9)

Design and operation of a woodwaste cogeneration plant, TAPPI JOURNAL, September 2000, Vol. 83(9)

Control and optimization of mechanical pulping systems, TAPPI JOURNAL, September 2000, Vol. 83(9)

Control and optimization of mechanical pulping systems, TAPPI JOURNAL, September 2000, Vol. 83(9)

Direct causticization of kraft black liquor solids with tio2 in a fluidized bed, TAPPI JOURNAL, December 2000, Vol. 83(12)

Direct causticization of kraft black liquor solids with tio2 in a fluidized bed, TAPPI JOURNAL, December 2000, Vol. 83(12)

Biological destruction of haps for cluster rule compliance, TAPPI JOURNAL, December 2000, Vol. 83(12)

Biological destruction of haps for cluster rule compliance, TAPPI JOURNAL, December 2000, Vol. 83(12)