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The Efficiency of Hydrocyclones for the Separation of Different Starches
Author(s) -
van Esch Frans
Publication year - 1991
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19910431104
Subject(s) - starch , potato starch , chemistry , hydrocyclone , chromatography , pulp and paper industry , food science , engineering , physics , classical mechanics
Since many years the starch industry uses hydrocyclones to purify starch. The starch is washed countercurrently with water in a number of washing stages. For a good washing effect, in each stage a separation of starch and impurities must be obtained. Different methods can be used to describe the efficiency of separation. As most suitable, the reduced grade efficiency is chosen. This efficiency is quantified for different starches: maize, potato, rice, wheat. From the measured efficiencies, relative sizes for washing batteries are calculated. The results correlate well with existing plant practices. The influence of starch damage on the separation efficiency was also investigated. Damaged starch appears more difficult to separate.