Improvements in or relating to the purification of sugar factory and refinery juices

摘要

501,754. Purifying sugar solutions. TEATINI, D. Sept. 3, 1937, No. 24140. Drawings to Specification. [Class 127] Sugar factory or refinery juices are purified by adding thereto lime or equivalent alkali in amount sufficient to bring the juice to the point of optimum flocculation within the isoelectric zone, then adding sulphur dioxide or equivalent acidic reagent so as to act both electrolytically and chemically and to reduce the pH value while still maintaining it in the isoelectric zone and then adding lime or equivalent alkali so as to produce the condition of alkalinity at which the removal of the flocculated impurities takes place most rapidly. Specifications 351,160,417,075, and 429,691 are referred to.