TNSN86070A1 - Procede de cristallisation de l'acide phosphorique - Google Patents

Procede de cristallisation de l'acide phosphorique

Info

Publication number
TNSN86070A1
TNSN86070A1 TNTNSN86070A TNSN86070A TNSN86070A1 TN SN86070 A1 TNSN86070 A1 TN SN86070A1 TN TNSN86070 A TNTNSN86070 A TN TNSN86070A TN SN86070 A TNSN86070 A TN SN86070A TN SN86070 A1 TNSN86070 A1 TN SN86070A1
Authority
TN
Tunisia
Prior art keywords
phosphoric acid
crystallization
present
crystallizing
magma
Prior art date
Application number
TNTNSN86070A
Other languages
English (en)
Inventor
Karol Wiewiorowski Tadeusz
Charles Astley Vivian
Original Assignee
Freeport Res And Dev Company
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 Freeport Res And Dev Company filed Critical Freeport Res And Dev Company
Publication of TNSN86070A1 publication Critical patent/TNSN86070A1/fr

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Saccharide Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

L'INVENTION PRESENTE EST RELATIVE AU PROCEDE DE L'ACIDE PHOSPHORIQUE PAR LA CRISTALLISATION. L'ACIDE PHOSPHORIQUE DU PROCEDE HUMIDE EST PURIFIE EN LE REFROIDISSANT POUR LES CONDITIONS SUPPERSATUREES, ET EN AJOUTANT DES QUANTITES RELATIVEMENT GRANDES DES SEMENCES DE CRISTAUX RELATIVEMENT FINES ET PURES. LA CRISTALLISATION EST EFFECTUEE ENSUITE SOUS DES CONDITIONS QUI SUBSTANTIELLEMENT FAVORISENT LA PRODUCTION DE CRISTAL DANS LES SEMENCES QUI SONT AJOUTES ET NE FAVORISENT PAS LA NUCLEATION SECONDAIRE. POUR EMPECHER LA CRISTALLISATION DE LA MAGMA D'ATTEINDRE UNE VISCOSITE QUI PEUT RENDRE LE PROCEDE PLUS DIFFICILE, LA PRESENTE INVENTION FOURNIE POUR LE RECYCLEMENT DE LA MATIERE DU RAFFINAGE D'UNE QUANTITE SUFFISANTE POUR MAINTENIR LE CONTENU DES SOLIDES DE LA MAGMA CRISTALLISEE INFERIEURE A 40 %
TNTNSN86070A 1985-05-08 1986-05-08 Procede de cristallisation de l'acide phosphorique TNSN86070A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/731,970 US4655790A (en) 1985-05-08 1985-05-08 Phosphoric acid crystallization process

Publications (1)

Publication Number Publication Date
TNSN86070A1 true TNSN86070A1 (fr) 1990-01-01

Family

ID=24941659

Family Applications (1)

Application Number Title Priority Date Filing Date
TNTNSN86070A TNSN86070A1 (fr) 1985-05-08 1986-05-08 Procede de cristallisation de l'acide phosphorique

Country Status (11)

Country Link
US (1) US4655790A (fr)
EP (1) EP0202700B1 (fr)
JP (1) JPS6230607A (fr)
KR (1) KR930006693B1 (fr)
AT (1) ATE73734T1 (fr)
BR (1) BR8602056A (fr)
CA (1) CA1265316A (fr)
MA (1) MA20676A1 (fr)
PH (1) PH23743A (fr)
TN (1) TNSN86070A1 (fr)
ZA (1) ZA863234B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA199900838A1 (ru) * 1997-03-31 2000-04-24 Ватерворкс Интернешнл, Инк. Способ очистки серной кислоты
US6280494B1 (en) 1999-07-21 2001-08-28 Imc-Agrico Co. Method for producing fertilizer grade DAP having an increased nitrogen concentration in a spray column
US6241796B1 (en) 1999-07-21 2001-06-05 Imc-Agrico Company Method for producing fertilizer grade DAP having an increased nitrogen concentration from recycle
CH701939B1 (de) * 2007-09-06 2011-04-15 Sulzer Chemtech Ag Verfahren und Vorrichtung zur Reinigung von wässriger Phosphorsäure.
CN104030261B (zh) * 2013-12-30 2016-01-27 广西明利化工有限公司 一种高纯度电子级磷酸的生产方法

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1283398A (en) * 1918-02-18 1918-10-29 John N Carothers Process for the direct preparation of crystallized phosphoric acid.
US2857246A (en) * 1952-07-16 1958-10-21 Monsanto Chemicals Process for the purification of phosphorous acid
US2813777A (en) * 1953-11-05 1957-11-19 Norsk Hydro Elektrisk Process for the crystallization of nitrate from a nitric acid solution of crude phosphate
US2847285A (en) * 1954-02-09 1958-08-12 Fonte Electr S A Process for manufacturing crystallized pure and anhydrous phosphoric acid, and installation for carrying out said process
US3284171A (en) * 1963-04-06 1966-11-08 Harper Douglas Charles Process for concentrating orthophosphoric acid with a miscible water entrainer and crystallizing
US3333929A (en) * 1966-04-04 1967-08-01 Armour Agricult Chem Clarification and concentration of wet process phosphoric acid
JPS4414692Y1 (fr) * 1966-12-15 1969-06-23
US3642439A (en) * 1969-10-15 1972-02-15 Allied Chem Method of separating magnesium from wet-process phosphoric acid
US3679374A (en) * 1970-03-31 1972-07-25 Procter & Gamble Separation of phosphorus acid from mixtures of phosphorus acid and phosphoric acid by crystallization
CS150818B1 (fr) * 1970-11-14 1973-09-17
DE2108857C3 (de) * 1971-02-25 1973-09-13 Knapsack Ag, 5033 Huerth-Knapsack Verfahren zur Herstellung kristallisierter Pyrophosphorsäure
IL49211A (en) * 1972-10-02 1977-07-31 Albright & Wilson Process for purifying wet process phorphoric acid
GB1436115A (en) * 1972-10-02 1976-05-19 Albright & Wilson Crystallization process
GB1464536A (fr) * 1973-02-07 1977-02-16
US3890097A (en) * 1974-05-06 1975-06-17 Agrico Chem Co Method of purifying wet process phosphoric acid
CA1066020A (fr) * 1975-05-15 1979-11-13 John D. Jernigan Procede pour l'obtention d'acide phosphorique pur a partir d'acide polyphosphorique
SU1126202A3 (ru) * 1976-05-28 1984-11-23 Институт Фор Атомэнерги (Фирма) Способ непрерывной многостадийной кристаллизации из раствора
US4299804A (en) * 1978-03-09 1981-11-10 Agrico Chemical Company Removal of magnesium and aluminum impurities from wet process phosphoric acid
US4215098A (en) * 1978-04-26 1980-07-29 Albright & Wilson Limited Purification of wet process phosphoric acid
US4296082A (en) * 1978-04-26 1981-10-20 Albright & Wilson Limited Purification of wet process phosphoric acid
US4243643A (en) * 1978-10-25 1981-01-06 Occidental Chemical Company Metallic ion removal from phosphoric acid
US4278648A (en) * 1980-03-17 1981-07-14 Johns-Manville Corporation Method of improving siliceous filter aid dispersion in wet process orthophosphoric acid production systems
GB2078694B (en) * 1980-05-21 1984-06-13 Albright & Wilson Crystallizing phosphoric acid
US4487750A (en) * 1983-08-01 1984-12-11 Freeport Minerals Company Stabilization of wet process phosphoric acid

Also Published As

Publication number Publication date
US4655790A (en) 1987-04-07
KR930006693B1 (ko) 1993-07-22
EP0202700A1 (fr) 1986-11-26
BR8602056A (pt) 1987-01-06
PH23743A (en) 1989-11-03
ZA863234B (en) 1988-05-25
EP0202700B1 (fr) 1992-03-18
ATE73734T1 (de) 1992-04-15
CA1265316A (fr) 1990-02-06
MA20676A1 (fr) 1986-12-31
KR860008937A (ko) 1986-12-19
JPS6230607A (ja) 1987-02-09

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