IT8025566A0 - Controllo ossidativo della post-precipitazione in acido fosforico. - Google Patents

Controllo ossidativo della post-precipitazione in acido fosforico.

Info

Publication number
IT8025566A0
IT8025566A0 IT8025566A IT2556680A IT8025566A0 IT 8025566 A0 IT8025566 A0 IT 8025566A0 IT 8025566 A IT8025566 A IT 8025566A IT 2556680 A IT2556680 A IT 2556680A IT 8025566 A0 IT8025566 A0 IT 8025566A0
Authority
IT
Italy
Prior art keywords
precipitation
post
phosphoric acid
oxidative control
oxidative
Prior art date
Application number
IT8025566A
Other languages
English (en)
Other versions
IT1195766B (it
Inventor
Richard Newton Hill
Moises Gali Sanchez
Original Assignee
Grace W R & Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grace W R & Co filed Critical Grace W R & Co
Publication of IT8025566A0 publication Critical patent/IT8025566A0/it
Application granted granted Critical
Publication of IT1195766B publication Critical patent/IT1195766B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration
    • C01B25/235—Clarification; Stabilisation to prevent post-precipitation of dissolved impurities

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
IT25566/80A 1980-01-10 1980-10-24 Controllo ossidativo della post-precipitazione in acido fosforico IT1195766B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/111,013 US4279877A (en) 1980-01-10 1980-01-10 Oxidative control of post precipitation in phosphoric acid

Publications (2)

Publication Number Publication Date
IT8025566A0 true IT8025566A0 (it) 1980-10-24
IT1195766B IT1195766B (it) 1988-10-27

Family

ID=22336155

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25566/80A IT1195766B (it) 1980-01-10 1980-10-24 Controllo ossidativo della post-precipitazione in acido fosforico

Country Status (9)

Country Link
US (1) US4279877A (it)
JP (1) JPS56100118A (it)
BR (1) BR8008447A (it)
CA (1) CA1130535A (it)
DE (1) DE3045890A1 (it)
IT (1) IT1195766B (it)
MA (1) MA19037A1 (it)
NL (1) NL8005924A (it)
ZA (1) ZA806604B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430313A (en) 1980-08-11 1984-02-07 Mobil Oil Corporation Shipping black phosphoric acid
US4439407A (en) * 1983-01-19 1984-03-27 Agrico Chemical Company Method for improving filterability of gypsum and wet process phosphoric acid
US4487750A (en) * 1983-08-01 1984-12-11 Freeport Minerals Company Stabilization of wet process phosphoric acid
US4710366A (en) * 1986-10-23 1987-12-01 Freeport Minerals Company Method for producing stabilized wet process phosphoric acid with low content of magnesium and aluminum
US5236679A (en) * 1992-05-06 1993-08-17 Freeport-Mcmoran Resource Partners Removal of aluminum contamination during production of phosphoric acid
CN103569988B (zh) * 2012-07-31 2015-10-14 东莞市长安东阳光铝业研发有限公司 正磷酸铁的制备方法
EP3216756A1 (en) * 2016-03-08 2017-09-13 ATOTECH Deutschland GmbH Method for recovering phosphoric acid from a spent phosphoric acid / alkali metal permanganate salt etching solution

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA617322A (en) 1961-03-28 W. Harwood William Process for producing clarified phosphoric acid
US2799557A (en) * 1952-10-11 1957-07-16 Chemical Construction Corp Production of feed grade dicalcium phosphate
US2968528A (en) * 1957-07-01 1961-01-17 Int Minerals & Chem Corp Process for producing clarified phosphoric acid
US3206282A (en) * 1962-02-20 1965-09-14 Allied Chem Removal of soluble after-precipitate from concentrated phosphoric acid
NL301498A (it) * 1962-12-06
US3528771A (en) * 1967-10-10 1970-09-15 Int Minerals & Chem Corp Phosphoric acid clarification
US3907680A (en) * 1973-11-06 1975-09-23 Sr Richard N Hill Clarification of aqueous acidic phosphatic solutions
US4048289A (en) * 1973-12-13 1977-09-13 Fertilizantes Fosfatados Mexicanos, S.A. Stabilization of wet-process phosphoric acid
JPS5297394A (en) * 1976-02-13 1977-08-16 Toyo Soda Mfg Co Ltd Removal of organic matter in phosphoric acid
CA1086475A (en) * 1976-05-06 1980-09-30 Richard N. Hill Production of stabilized wet process phosphoric acid
DE2719701C3 (de) * 1976-05-06 1986-10-02 W.R. Grace & Co., New York, N.Y. Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte Phosphorsäure

Also Published As

Publication number Publication date
MA19037A1 (fr) 1981-10-01
ZA806604B (en) 1981-11-25
US4279877A (en) 1981-07-21
BR8008447A (pt) 1981-07-14
NL8005924A (nl) 1981-08-03
CA1130535A (en) 1982-08-31
IT1195766B (it) 1988-10-27
DE3045890A1 (de) 1981-07-16
JPS56100118A (en) 1981-08-11

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