International Sugar Journal

Improvements of raw sugar quality using double purge of C-magma [Full subscriber]

Double purge or affination of C – magma offers an opportunity to improve color of Raw Sugar by reducing the recycle of final molasses to the first crystallization stage. The system can be implemented in a traditional three-boiling scheme with minor process changes. It requires the addition of a second centrifugation after an initial centrifugation of C – massecuite. Little or no water is applied to the first centrifugation to obtain 79 – 81 magma purity. In a second centrifugation, the magma is affined, producing 92 – 94 magma purity. The wash molasses – 62 to 66 purity, can be…

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