The invention discloses a clarification method for
cane expressed juice, which is an improvement for
sulfurous acid method manufacturing technique of a
cane sugar factory. The
cane juice is conveyed into a reactor after the first heating, and
carbonation is performed through adding
lime and
carbon dioxide;
solid-liquid separation can be performed to the
carbonation cane juice to remove
solid impurity, and the stoving liming
neutralization treatment is performed to the obtained clear juice taking
sulfur dioxide and
lime as clarificant; the stoving liming
neutralization treatment can be also performed to the turbid
carbonation cane juice directly taking
sulfur dioxide and
lime as clarificant. The stoving liming
neutralization cane juice is conveyed into a settler after the second heating, and the clear juice and the mud juice are separated. The clarification method has the advantages that the brenstone use level is reduced, the production cost is saved, the
sulfur dioxide residual in white
sugar is decreased greatly, the product quality is improved, the
carbon dioxide discharge amount is reduced, the clear juice purity is increased by 1 to 1.5, the white granulated
sugar color value is reduced by twenty percent, and therefore the
environment problem does not exist.