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Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104530
Title Continuous mixing of solids
show extra info.
door M.S. Raouf
Author(s) Raouf, M.S.
Publisher Wageningen : Veenman
Publication year 1963
Description 73 p ill
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Leniger, Prof. Dr. Ir. H.A. ; Kuiper, Prof. Dr. N.H.
Graduation date 1963-06-07
Dissertation no. 347
Author abstract show abstract
The most important literature on theoretical aspects of mixing solids was reviewed.

Only when the mixed materials showed no segregation it was possible to analyse the mixing process quantitatively. In this case the mixture could be described by the 'χ' Square test. Longitudinal mixing could be studied by estimating the spread in residence times.

In two common types of mixers the mixing was studied of two kinds of granular materials, differing only in colour of granules. (Colour had no influence on mixing.)

In a continuously operating semi-technical 'Spaans' screw and ribbon mixer the mixing proceeded rapidly but irregularly. The minimal mixer length necessary for apparent completion of mixing decreased at higher speeds of rotation. The performance of a more widely pitched. screw and ribbon element was slightly better. The spread in residence times was appreciable. Longitudinal mixing was slightly more intensive at higher speeds of rotation, wider screw and ribbon pitches and greater mixer lengths.

In a mixer consisting of a simple, rotating, slightly inclined, partially filled, hollow cylinder mixing proceeded more gradually. Mixing was 'diffusive'. The mixing rate increased with increased rotational speed, increased wall roughness and decreasing feed rate. Longitudinal mixing proved to be very limited.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,347
FORUM ; STACKS ; NN08202,347
Keyword(s) (cab) mixers / mixing / transporters / materials / pretreatment / metal working
Categories Physical Chemistry
Publication type PhD thesis
Language English
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