Production of phosphates

Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing

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423321R, C01B 2516

Patent

active

042281407

ABSTRACT:
Various stages of the process of producing phosphates are subject to a vacuum produced by a liquid ring pump in various materials of construction using relatively high concentrations of sulfuric acid as the compressant liquid.

REFERENCES:
patent: 3044854 (1962-07-01), Young
patent: 3154240 (1964-10-01), Jennings
patent: 3414376 (1968-12-01), Banks
patent: 3467162 (1969-09-01), Putnam
patent: 3544269 (1970-12-01), Rushton
patent: 3666413 (1972-05-01), Bergstrom

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