METHOD FOR REFINING OF CRUDE SUGAR Russian patent published in 2001 - IPC

FIELD: sugar industry. SUBSTANCE: method envisages preparation of first-crystallization strike liquor from crude sugar and solution of yellow sugar of last-crystallization melt liquor in melt liquor mixer. Melt liquor is subjected to purification via liming, saturation, filtration, and sulfitation. Filtration precipitate separated from purified melt liquor is washed with water to give sweet water, which is conveyed into crude sugar clarification process in clarification mixer. 10 to 30% of the total amount of filtration precipitate preheated to 90-92 C is loaded into clarification mixer simultaneously with sweet water. EFFECT: enhanced melt liquor purification effect and improved quality of purified melt liquor. 2 ex