Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing

• Main Authors: Kilgannon, Robin R, Kane, Robert J, Joy, Eileen M, Dewan, Anil K
• Format: Patent
• Language: English
• Published: 28.03.2006

This invention relates to an improved process for manufacturing bleached thermomechanical aspen pulp having reduced yellow after treatment with aluminum based chemicals such as alum which are used in paper making processes. In this improved process the pulp is washed prior to, after or between the b...