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Open Access
Evaluation of novel drum chipper technology: pilot-scale production of short wood chips, TAPPI Journal October 2019

ABSTRACT: Impregnation of wood chips with acidic pulping liquors is improved when using short chip lengths. If the average wood chip length is too short, conventional chipping technology will generate excess small material, such as pin chips and fines. The possibility of using newly developed drum chipping technology to produce short-length wood chips was evaluated with a pilot drum chipper operating at different drum velocities and in-feed angles. With a drum velocity of 30 m/s, the average wood chip lengths and the combined fractions of pin chips and fines were 24 mm and 3.3%, 22 mm and 4.2%, and 17 mm and 8.5%. The highest fractions of total accept chips (large and small accepts), 89% to 90% without screening, were observed for drum velocities of 30•34 m/s and average wood chips lengths of 21•22 mm. The results indicate the potential of drum chipping technology for producing short wood chips with relatively high fractions of accept chips and tolerable fractions of pin chips and fines.

Journal articles
Open Access
Minimizing baso4 scale formation In ecf bleach plants, TAPPI JOURNAL, March 2003, Vol. 2(3) (119KB)

Minimizing baso4 scale formation In ecf bleach plants, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (119KB)

Journal articles
Open Access
Enhancing kraft pulping through unconventional, higher sulfide-containing pretreatment liquorsâ??A review, TAPPI JOURNAL, Online Exclusive, March 2003, Vol. 2(3) (347KB)

Enhancing kraft pulping through unconventional, higher sulfide-containing pretreatment liquors–A review, TAPPI JOURNAL, Online Exclusive, March 2003, Vol. 2(3) (347KB)

Journal articles
Open Access
Fast determination of anionic groups in different pulp fiber by methylene blue sorption, Solutions! & TAPPI JOURNAL, October 2003, Vol. 2(10) (115KB)

Fast determination of anionic groups in different pulp fiber by methylene blue sorption, Solutions! & TAPPI JOURNAL, October 2003, Vol. 2(10) (115KB)

Journal articles
Open Access
Dynamic modeling of agitated pulp stock chests, TAPPI JOURNAL, September 2003, Vol. 2(9) (398KB)

Dynamic modeling of agitated pulp stock chests, TAPPI JOURNAL, September 2003, Vol. 2(9) (398KB)

Journal articles
Open Access
Preparation of specialized paper, Solutions! & TAPPI JOURNAL, April 2004 (349KB)

Preparation of specialized paper, Solutions! & TAPPI JOURNAL, April 2004 (349KB)

Journal articles
Magazine articles
Open Access
Influence of tensile straining and fibril angle on the stiffness and strength of previously dried kraft pulp fibers, TAPPI JOURNAL July 2018

Influence of tensile straining and fibril angle on the stiffness and strength of previously dried kraft pulp fibers, TAPPI JOURNAL July 2018

Journal articles
Open Access
Visualizations of offset and flexographic inks at bubble surfaces, TAPPI JOURNAL, March 2002 (251KB)

Visualizations of offset and flexographic inks at bubble surfaces, SOLUTIONS & TAPPI JOURNAL, March 2002 (251KB)

Journal articles
Open Access
Flotation deinking with magnesium oxide as the alkali source, TAPPI JOURNAL, October 2002 (211KB)

Flotation deinking with magnesium oxide as the alkali source, Solutions! & TAPPI JOURNAL, October 2002 (211KB)

Journal articles
Open Access
Influence of organic additives on calcium carbonate precipitation during kraft pulping, TAPPI JOURNAL, October 2002 (202KB)

Influence of organic additives on calcium carbonate precipitation during kraft pulping, Solutions! & TAPPI JOURNAL, October 2002 (202KB)

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