in New York .
Written in English
Bibliography: p. 116-172.
|Statement||Editor: Earl H. Johnson and authors: Henry J. Perry [and others]|
|Series||TAPPI monograph series,, no. 21, Technical Association of the Pulp and Paper Industry. TAPPI monograph series ;, no. 21.|
|Contributions||Johnson, Earl Hanford, 1903- ed., Perry, Henry J.|
|LC Classifications||TS1175 .T4|
|The Physical Object|
|Number of Pages||183|
|LC Control Number||a 61003578|
Book editor: Bruno Lönnberg, (Tech.), Professor emeritus, Åbo Akademi University Volume 5 of the Papermaking Science and Technology Series, published by the Finnish Paper Engineers’ purpose of a mechanical pulping process is to separate the fibres from the wood matrix, hopefully in a form suitable for a specific papermaking process. Mechanical Pulping Manual [Tappi] on *FREE* shipping on qualifying offers. The kraft pulping process (see Figure ) involves the digesting of wood chips at elevated temperature and pressure in "white liquor", which is a water solution of sodium sulfide and sodium hydroxide. The white liquor chemically dissolves the lignin that binds the cellulose fibers Size: KB. Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibers from wood, fiber crops, waste paper, or with water and other chemical or plant-based additives, pulp is the major raw material used in papermaking and the industrial production of other paper category: Production [M ton].
Excellent mechanical pulping solutions Superior pulp quality at reduced energy consumption. ANDRITZ knows how to meet the challenge of enhancing fiber quality with economical use of resources and offers complete mechanical pulping systems comprising highly efficient equipment in every process step. Topic 3 – Mechanical Pulping James A. Olson Pulp and Paper Centre, Department of Mechanical Engineering, University of British Columbia Mechanical Pulping Comparison of Mechanical and Chemical Pulps Debarking Stone Groundwood (e.g. book) (e.g. newsprint) - Reinforcement pkg. - Molded products File Size: 2MB. Chemical pulping methods rely on the effect of chemicals to separate fibers, whereas mechanical pulping methods rely completely on physical action. The more the chemicals are involved, lower is the yield and lignin content since chemical action degrades and solublizes components of the wood, especially lignin and hemicelluloses. Bleaching of mechanical pulp is much different than that for chemical pulp. Mechanical pulping leaves the lignin and the cellulose intact, whereas the purpose of chemical pulping is to chemically sepa-rate the lignin from the cellulose fibers and remove it from the pulp. A major advantage of mechanical pulping is the high yields of pulp that can be.
Alongside the traditional aspects of pulping processes, pulp used in industry and paper pulps, this book describes all pulping processes used for paper and board manufacturing as well as waste liquor treatment, pulp bleaching and environmental aspects, while also covering pulp properties and applications. Method of converting logs or wood chips into paper pulp for use in papermaking accomplished by mechanical grinding, as opposed to chemical purpose of pulping is to reduce wood (or other fibrous raw material) to individual cellulose fibers. A non-fibrous constituent of wood, lignin, binds cellulose fibers together, and is primarily responsible for reducing paper quality . Mechanical and Chemi-Mechanical Pulping [Jim Atkins] on *FREE* shipping on qualifying offers. Mechanical and Chemi-Mechanical Pulping is the sixth of 15 CD-ROMs in the Making Pulp and Paper CD-ROM Series. Through this highly interactive. Mechanical Pulping 1 Effect of different refining pressures and energy using spruce TMP pulps from Braviken Paul Ander, SLU, Stig Bardage, SLU, Geoffrey Daniel, SLU, .