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A method of producing cellulosic pulp
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- Engstrand, Per, 1955- (author)
- Mittuniversitetet,Avdelningen för kemiteknik,FSCN - High Yield Pulping Research Profile
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- Hammar, Lars Åke, 1952- (author)
- Innventia (STFI)
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- Sjögren, Birger (author)
- STFI (Innventia)
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- (creator_code:org_t)
- 1991
- English.
- Patent (pop. science, debate, etc.)
Abstract
Subject headings
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- Mechanical and chemimechanical cellulose pulp, particularly paper pulp, is produced at a low energy input by disintegrating and beating wood material in one or more stages. Acccording to the invention, a substance capable of forming complexes with polyvalent metal ions, particularly calcium ions, so-called complexing agent, is added to the wood material prior to the beating process in order to replace said calcium or other polyvalent metal ions with sodium ions, therewith a further reduction in the energy input is obtained.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Keyword
- ion exchange
- complexing agent
- mechanical pulping
- chemimechanical pulping
- low consistency refining
- high consistency refiningchanical pulping
- chemimechanical pulping
- low consistency refining
- high consistency refining
Publication and Content Type
- pop (subject category)
- pat (subject category)
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- Mid Sweden University
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