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Article: Chemical treatment in mechanical pulping, Part 5: sulfite pretreatment.(Pulping)

Article from:
Solutions - for People, Processes and Paper
Article date:
August 1, 2003
Author:
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Application: For sulfite treatment in mechanical pulping systems, this study shows that process conditions and equipment use are important in pulp property development and process efficiency.

This investigation looked at the following three methods of applying sulfite for chip pretreatment in refiner mechanical pulping:

1. Atmospheric impregnation followed by rotary valve or plug screw feeding into a pressurized cooking vessel

2. Chemical application directly into the pressurized cooking

3. Altered ...

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