Dimensionierung von Kristallisatoren

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Abstract
Current status of crystallizer design. This paper surveys current knowledge in designing large scale crystallizers. The volume of a crystallizer depends on the desired mean crystal size, the suspended magma density and the permissible supersaturation, the latter determining the growth velocity and the nucleation rate. Different techniques for measuring the rate of crystal growth are outlined, as are also the methods used in its calculation, which are based upon various models of crystal growth. In designing a large scale crystallizer the phenomena of fluid dynamics and heat transfer must be taken into consideration. The paper deals with these two areas in detail and discusses problems associated with the control of population balance in the slurry.