Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1979-10-17
1982-07-27
McCarthy, Helen M.
Liquid purification or separation
Processes
Ion exchange or selective sorption
423321R, 23293R, 209 5, 210726, 252411R, C02F 156, C01B 2516, B03B 100, B03D 306
Patent
active
043416381
ABSTRACT:
Phosphoric acid is purified by a process which comprises treating the crude acid solution with a body feed agent, powdered carbon and a flocculating agent to cause a major portion of the soluble and insoluble impurities to be removed in a single operation. In the preferred process, hot wet process phosphoric acid from the plant filter is first cooled to a temperature of from about 100.degree. F. to about 130.degree. F. and then treated in the above-described manner.
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Allen Hanceford L.
Berry William W.
Dewey Robert H.
Heller Gregory A.
International Minerals & Chemical Corp.
McCarthy Helen M.
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