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Journal articles
Open Access
Fiber trapping in low-consistency refining: new parameters to describe the refining process, TAPPI JOURNAl, July 2008

Fiber trapping in low-consistency refining: new parameters to describe the refining process, TAPPI JOURNAl, July 2008

Journal articles
Open Access
Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, TAPPI JOURNAl, July 2008

Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, TAPPI JOURNAl, July 2008

Journal articles
Open Access
Water release from fractionated stock suspensions. Part 1 â?¢ Effects of the amounts and types of fiber fines, TAPPI JOURNAl, July 2008

Water release from fractionated stock suspensions. Part 1 • Effects of the amounts and types of fiber fines, TAPPI JOURNAl, July 2008

Journal articles
Open Access
Pre-extraction of hemicelluloses and subsequent kraft pulping Part I: Alkaline extraction, TAPPI JOURNAL June 2008

Pre-extraction of hemicelluloses and subsequent kraft pulping Part I: Alkaline extraction, TAPPI JOURNAL June 2008

Journal articles
Open Access
Determination of the mineral constituents of recycled paper mill sludge, TAPPI JOURNAL June 2008

Determination of the mineral constituents of recycled paper mill sludge, TAPPI JOURNAL June 2008

Journal articles
Open Access
Application of lipase to reduce ONP flotation regjects Part I: Changes in hydrophobicity, TAPPI JOURNAL June 2008

Application of lipase to reduce ONP flotation regjects Part I: Changes in hydrophobicity, TAPPI JOURNAL June 2008

Journal articles
Open Access
Editor's Note: When recovery boilers go bad, TAPPI JOURNAL A

Editor's Note: When recovery boilers go bad, TAPPI JOURNAL August 2010

Journal articles
Open Access
Environmentally friendly pulping of rice straw to eliminate black liquor discharge, TAPPI Journal 10AUG07

Environmentally friendly pulping of rice straw to eliminate black liquor discharge, TAPPI JOURNAL August 2010

Journal articles
Magazine articles
Open Access
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.

Journal articles
Open Access
Gap mechanics in pulp refiners, TAPPI Journal June 2025

ABSTRACT: Studies of pulp refining have shown that a single bar impact on pulp has only a 1%•5% probability of producing a successful refining effect. This study has explored the reason why. An analysis of refining kinetics suggested that small segments of a fiber length, about a fiber diameter in size, are treated during each impact. Measurements of localized swelling along fiber lengths caused by refining supported this finding. Based on these findings, it was postulated that force transmittal through fiber networks occurred primarily at fiber crossings. The small size of fiber diameters relative to fiber lengths accounts for the low probability of a successful refining event at each impact. This probability, and the probability of fibers being captured and impacted during passage through a refiner, account for the need for multiple bar crossings to refine pulps.

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