Preparation of bleached chemithermomechanical pulp
作者： Michel Devic
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摘要: Bleached chemithermomechanical wood pulp having a high degree of whiteness is economically prepared by mechanically disintegrating and chemically digesting lignocellulosic material with sulfite at temperature least 100°C. under saturated water vapor pressure thereafter bleaching the thus treated hydrogen peroxide in an alkaline medium, wherein no solids or liquids are removed from outset treatment through completion step.
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