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Growth of nickel sulfate in a laboratory‐scale fluidized‐bed crystallizer
Author(s) -
Phillips V. Roger,
Epstein Norman
Publication year - 1974
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690200408
Subject(s) - dissolution , nickel , crystal (programming language) , fluidized bed , chemistry , growth rate , mineralogy , sulfate , crystal growth , analytical chemistry (journal) , atmospheric temperature range , materials science , thermodynamics , chromatography , crystallography , organic chemistry , geometry , physics , mathematics , computer science , programming language
Growth and dissolution rates of nickel sulfate α‐hexahydrate were measured as functions of the concentration driving force in a laboratory‐scale fluidized‐bed crystallizer for the temperature range 35° to 50°C and the crystal size range 0.5 to 4.0 mm. Dissolution rates at a given temperature and crystal size were first order in the concentration driving force. Growth rates were about one‐quarter of dissolution rates and depended on a higher exponent (around 1.3) of the concentration driving force. This exponent was not significantly affected by variations in crystal size, but decreased as temperature increased. The apparent variation of growth rate itself with crystal size at constant temperature was slight. Growth rates were found to be insensitive to solids concentration.