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Measurement of Cake Strength in Potash Using a Centrifuge
Author(s) -
Wang Yan,
Besant Robert W.,
Evitts Richard W.,
Dolovich Allan T.
Publication year - 2007
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200601040
Subject(s) - potash , centrifuge , fertilizer , water content , ultimate tensile strength , materials science , composite material , moisture , compressive strength , chemistry , metallurgy , geotechnical engineering , potassium , geology , physics , organic chemistry , nuclear physics
When a water‐soluble granular fertilizer, such as potash fertilizer, is wetted and then dried, clumps or cakes often form in the material. A centrifugal loading method has been developed to determine cake strength in a ring of potash fertilizer. This method determines the area‐average tensile stress at the speed of the centrifuge when the specimen fractures. The cake strength was measured for a series of tests in which the initial moisture content and drying time of each sample was varied. The results show that the cake strength increases linearly with greater initial moisture content. It was also found that a slower drying process produces a stronger cake.