ZA863234B - Phosphoric acid crystallization process - Google Patents

Phosphoric acid crystallization process

Info

Publication number
ZA863234B
ZA863234B ZA863234A ZA863234A ZA863234B ZA 863234 B ZA863234 B ZA 863234B ZA 863234 A ZA863234 A ZA 863234A ZA 863234 A ZA863234 A ZA 863234A ZA 863234 B ZA863234 B ZA 863234B
Authority
ZA
South Africa
Prior art keywords
phosphoric acid
crystallization
present
crystallization process
acid crystallization
Prior art date
Application number
ZA863234A
Other languages
English (en)
Inventor
Tadeusz Karol Wiewiorowski
Vivian Charles Astley
Original Assignee
Freeport Res & Eng
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 & Eng filed Critical Freeport Res & Eng
Publication of ZA863234B publication Critical patent/ZA863234B/xx

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)
ZA863234A 1985-05-08 1986-04-30 Phosphoric acid crystallization process ZA863234B (en)

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
ZA863234B true ZA863234B (en) 1988-05-25

Family

ID=24941659

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA863234A ZA863234B (en) 1985-05-08 1986-04-30 Phosphoric acid crystallization process

Country Status (11)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998043716A2 (en) * 1997-03-31 1998-10-08 Waterworks International, Inc. Sulfuric acid purification process
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 (xx) * 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 (xx) * 1970-11-14 1973-09-17
DE2108857C3 (de) * 1971-02-25 1973-09-13 Knapsack Ag, 5033 Huerth-Knapsack Verfahren zur Herstellung kristallisierter Pyrophosphorsäure
GB1436115A (en) * 1972-10-02 1976-05-19 Albright & Wilson Crystallization process
IL49211A (en) * 1972-10-02 1977-07-31 Albright & Wilson Process for purifying wet process phorphoric acid
GB1464536A (xx) * 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 (en) * 1975-05-15 1979-11-13 John D. Jernigan Process for obtaining pure orthophosphoric acid from superphosphoric acid
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
BR8602056A (pt) 1987-01-06
ATE73734T1 (de) 1992-04-15
EP0202700B1 (en) 1992-03-18
TNSN86070A1 (fr) 1990-01-01
US4655790A (en) 1987-04-07
EP0202700A1 (en) 1986-11-26
CA1265316A (en) 1990-02-06
PH23743A (en) 1989-11-03
KR860008937A (ko) 1986-12-19
MA20676A1 (fr) 1986-12-31
KR930006693B1 (ko) 1993-07-22
JPS6230607A (ja) 1987-02-09

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