PROCESS FOR PRODUCING FOODDSTUFF CLASS ALKALI PHOSPHATE FROM WET PROCESS PHOSPHORIC ACID

Title:

PROCESS FOR PRODUCING FOODDSTUFF CLASS ALKALI PHOSPHATE FROM WET PROCESS PHOSPHORIC ACID

Document Type and Number:

Japanese Patent JPS5223599

Kind Code:

A

Abstract:

A process for converting wet process phosphoric acid to food grade alkali metal phosphates by a sequence of steps including extraction of the wet process acid, partial neutralization, dilution with water, contact with activated carbon, neutralization to a pH of from about 5 to about 9, contact with activated carbon, contact with insoluble alkaline earth metal phosphate salts and recovery of the dissolved alkali metal phosphate product in solution.

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Inventors:

MAJIN RIDA IRANI

Application Number:

JP9123476A

Publication Date:

February 22, 1977

Filing Date:

July 30, 1976

Export Citation:

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Assignee:

STAUFFER CHEMICAL CO

International Classes:

C01B25/30; C01B25/46; (IPC1-7): C01B25/26; C01B25/28; C01B25/30

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