Phosphatation - Refining

In phosphataion  liquor from affination is mixed with lime and then with phosphoric acid. Normally two kind of flocculants are added: a cationic flocculant to precipitate the anionic colorants and another flocculant to improve the floatation of formed flocks. Air is mixed with juice. Entrained air will adhere to the flocks increasing their floatability. 

Scheme of phosphatation

Scheme of Main Clarifier and Mud Treatement

Bibliography
Bennet M.C., 1972, Chemistry of phosphatation and carbonatation, Proc. of Cane Sug. Ref. Res., 62-75
Mochtar H.M., 1989, Decolourization of phosphatation cane sugar remelt by polyamines, Proc. of ISSCT
          Conf., 20: 15-23
Saranin A.P., 1972, Technology of phosfloatation of sugar melt, Sugar Tech. Review, 2: 1-72

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