IT1109490B - Processo a umido per la produzione di acido fosforico stabilizzato,e prodotto ottenuto - Google Patents

Processo a umido per la produzione di acido fosforico stabilizzato,e prodotto ottenuto

Info

Publication number
IT1109490B
IT1109490B IT23235/77A IT2323577A IT1109490B IT 1109490 B IT1109490 B IT 1109490B IT 23235/77 A IT23235/77 A IT 23235/77A IT 2323577 A IT2323577 A IT 2323577A IT 1109490 B IT1109490 B IT 1109490B
Authority
IT
Italy
Prior art keywords
production
phosphoric acid
product obtained
wet process
stabilized
Prior art date
Application number
IT23235/77A
Other languages
English (en)
Italian (it)
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
Application granted granted Critical
Publication of IT1109490B publication Critical patent/IT1109490B/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)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
IT23235/77A 1976-05-06 1977-05-05 Processo a umido per la produzione di acido fosforico stabilizzato,e prodotto ottenuto IT1109490B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68375676A 1976-05-06 1976-05-06

Publications (1)

Publication Number Publication Date
IT1109490B true IT1109490B (it) 1985-12-16

Family

ID=24745322

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23235/77A IT1109490B (it) 1976-05-06 1977-05-05 Processo a umido per la produzione di acido fosforico stabilizzato,e prodotto ottenuto

Country Status (8)

Country Link
US (1) US4110422A (ref)
JP (1) JPS52134893A (ref)
BR (1) BR7702853A (ref)
DE (1) DE2719701C3 (ref)
IT (1) IT1109490B (ref)
MX (1) MX148797A (ref)
NL (1) NL166443C (ref)
ZA (1) ZA772710B (ref)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294809A (en) * 1976-05-06 1981-10-13 W. R. Grace & Co. Aeration of phosphoric acid
CA1086475A (en) * 1976-05-06 1980-09-30 Richard N. Hill Production of stabilized wet process phosphoric acid
US4305915A (en) * 1976-05-06 1981-12-15 W. R. Grace & Co. Stabilized wet process phosphoric acid
AU499517B2 (en) * 1978-03-06 1979-04-26 W. R. Grace & Co Treating wet-process phosphoric acid
US4248846A (en) * 1979-07-03 1981-02-03 W. R. Grace & Co. Production of stabilized wet process phosphoric acid
US4250154A (en) * 1979-10-22 1981-02-10 W. R. Grace & Co. Re-post precipitation control
US4279877A (en) * 1980-01-10 1981-07-21 W. R. Grace & Co. Oxidative control of post precipitation in phosphoric acid
US4293311A (en) * 1980-01-10 1981-10-06 W. R. Grace & Co. Phosphoric acid crystallizer underflow return
US4303524A (en) * 1980-05-28 1981-12-01 Richards Thomas E Rotary vacuum precoat filter
US4313919A (en) * 1980-07-15 1982-02-02 Occidental Chemical Company Process for removing fine solids from phosphoric acid by vacuum filtration
US4301131A (en) * 1980-11-28 1981-11-17 W. R. Grace & Co. Oxidation of phosphoric acid plus K compound addition
US4364912A (en) * 1981-07-20 1982-12-21 W. R. Grace & Co. Post precipitation control of low-iron phosphoric acid, without perlite
US4411811A (en) * 1981-07-30 1983-10-25 Mobil Oil Corporation Clarification of black phosphoric acid with phosphoric acid rinse water
US4442081A (en) * 1982-12-02 1984-04-10 W. R. Grace & Co. Process for producing a stabilized phosphoric acid
US4487750A (en) * 1983-08-01 1984-12-11 Freeport Minerals Company Stabilization of wet process phosphoric acid
US4536378A (en) * 1983-10-13 1985-08-20 White Edward A Phosphate fertilizer production
US4632814A (en) * 1985-12-20 1986-12-30 International Minerals & Chemical Corp. Process for stabilizing 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
US5066471A (en) * 1990-11-26 1991-11-19 Imc Fertilizer, Inc. Lowering post-precipitation in merchant acid
US5236679A (en) * 1992-05-06 1993-08-17 Freeport-Mcmoran Resource Partners Removal of aluminum contamination during production of phosphoric acid
US20090294372A1 (en) * 2008-05-30 2009-12-03 Gill Jasbir S Inhibition of water formed scale in acid conditions
US8226910B2 (en) 2008-07-31 2012-07-24 Urtek, Llc Extraction of uranium from wet-process phosphoric acid
US8883096B2 (en) 2008-07-31 2014-11-11 Urtek, Llc Extraction of uranium from wet-process phosphoric acid
US7736526B2 (en) * 2008-10-03 2010-06-15 Thompson Industrial Services, Llc Method of filtering phosphate utilizing a rotary table filter or horizontal table filter

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA776577A (en) * 1968-01-23 G. Brown Martin Production of phosphoric acid and gypsum
CA637832A (en) * 1962-03-06 American Cyanamid Company Phosphoric acid preparation
CA463505A (en) * 1950-03-07 R. Singer Marshall Manufacture of phosphoric acid
DE596368C (de) * 1931-11-29 1934-04-30 Chem Fab Budenheim Akt Ges Reinigung der durch sauren Aufschluss von Rohphosphaten erhaltenen Rohphosphorsaeure
US2883266A (en) * 1956-06-29 1959-04-21 Swift & Co Production of sodium silico fluoride and fluorine-free phosphoric acid
US2987376A (en) * 1956-12-27 1961-06-06 Int Minerals & Chem Corp Method for defluorination of phosphoric acid
US3151941A (en) * 1960-05-02 1964-10-06 Smith Douglass Company Inc Defluorination of peosphoric acid
US3141734A (en) * 1960-10-25 1964-07-21 Int Minerals & Chem Corp Method of clarifying acidic phosphatic solutions
US3160495A (en) * 1961-03-28 1964-12-08 Minerals & Chem Philipp Corp Wet process phosphoric acid and liquid fertilizer compositions containing the same
US3193351A (en) * 1961-07-05 1965-07-06 Nat Distillers Chem Corp Removal of fluorine from wet process prosphoric acid
US3206282A (en) * 1962-02-20 1965-09-14 Allied Chem Removal of soluble after-precipitate from concentrated phosphoric acid
NL300215A (ref) * 1962-11-09
GB1113922A (en) * 1964-08-19 1968-05-15 Fisons Ltd Clarifying phosphoric acid
NL151045B (nl) * 1964-11-30 1976-10-15 Windmill Holland Bv Werkwijze voor het verwijderen van fluor uit fosforzuur.
US3528771A (en) * 1967-10-10 1970-09-15 Int Minerals & Chem Corp Phosphoric acid clarification
DE2032263B2 (de) * 1970-06-30 1973-01-11 Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim Verfahren zur entfernung von sulfationen aus technischer phosphorsaeure
SU479726A1 (ru) * 1973-03-30 1975-08-05 Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им.Ленсовета Способ предотвращени загустевани упаренной магнийсодержащей эктракционной фосфорной кислоты
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
CA1042180A (en) * 1973-12-13 1978-11-14 Sergio O. Pierres Stabilization of wet process phosphoric acid

Also Published As

Publication number Publication date
DE2719701B2 (de) 1979-08-30
NL166443C (nl) 1981-08-17
DE2719701A1 (de) 1977-11-10
US4110422A (en) 1978-08-29
NL7704900A (nl) 1977-11-08
ZA772710B (en) 1978-04-26
JPS5428392B2 (ref) 1979-09-17
BR7702853A (pt) 1978-09-19
MX148797A (es) 1983-06-22
DE2719701C3 (de) 1986-10-02
JPS52134893A (en) 1977-11-11

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