MA20678A1 - Procede pour la preparation de semences de cristaux pour la cristalisation de l'acide phosphorique - Google Patents

Procede pour la preparation de semences de cristaux pour la cristalisation de l'acide phosphorique

Info

Publication number
MA20678A1
MA20678A1 MA20904A MA20904A MA20678A1 MA 20678 A1 MA20678 A1 MA 20678A1 MA 20904 A MA20904 A MA 20904A MA 20904 A MA20904 A MA 20904A MA 20678 A1 MA20678 A1 MA 20678A1
Authority
MA
Morocco
Prior art keywords
phosphoric acid
cooled
crystalization
preparation
present
Prior art date
Application number
MA20904A
Other languages
English (en)
Inventor
Jude Taravella Jody
Charles Astley Vivian
D Mollere Phillip
Original Assignee
Freeport Mcmoran Inc
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 Mcmoran Inc filed Critical Freeport Mcmoran Inc
Publication of MA20678A1 publication Critical patent/MA20678A1/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
    • 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
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/226—Hemihydrate process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Saccharide Compounds (AREA)
  • Fertilizers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
MA20904A 1985-05-08 1986-05-08 Procede pour la preparation de semences de cristaux pour la cristalisation de l'acide phosphorique MA20678A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/731,969 US4657559A (en) 1985-05-08 1985-05-08 Process for seed crystal preparation for phosphoric acid crystallization

Publications (1)

Publication Number Publication Date
MA20678A1 true MA20678A1 (fr) 1986-12-31

Family

ID=24941655

Family Applications (1)

Application Number Title Priority Date Filing Date
MA20904A MA20678A1 (fr) 1985-05-08 1986-05-08 Procede pour la preparation de semences de cristaux pour la cristalisation de l'acide phosphorique

Country Status (11)

Country Link
US (1) US4657559A (fr)
EP (1) EP0209919B1 (fr)
JP (1) JPS6230606A (fr)
KR (1) KR930006692B1 (fr)
AT (1) ATE44719T1 (fr)
BR (1) BR8602054A (fr)
CA (1) CA1265315A (fr)
MA (1) MA20678A1 (fr)
PH (1) PH23763A (fr)
TN (1) TNSN86069A1 (fr)
ZA (1) ZA863235B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19536792A1 (de) * 1995-10-02 1997-04-03 Basf Ag Verfahren zur Stofftrennung aus einem flüssigen Gemisch durch Kristallisation
FI105909B (fi) * 1999-03-24 2000-10-31 Kemira Chemicals Oy Menetelmä fosforihapon laadun parantamiseksi
US6241796B1 (en) 1999-07-21 2001-06-05 Imc-Agrico Company Method for producing fertilizer grade DAP having an increased nitrogen concentration from recycle
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
GB2370004A (en) * 2000-12-18 2002-06-19 Elizabeth Acton Reducing solids deposition from supercooled solutions using ultrasound
KR100447941B1 (ko) * 2001-11-21 2004-09-08 한국화학연구원 고순도 인산 결정 제조방법과 그 장치
KR100454101B1 (ko) * 2002-03-15 2004-10-26 한국화학연구원 인산의 정제방법과 그 장치
TWI257915B (en) * 2004-06-29 2006-07-11 Yung-Hsiung Hsu Processes for purifying phosphoric acid
JP2008247733A (ja) 2007-03-14 2008-10-16 Niro Process Technology Bv リン酸リッチストリームの精製
CN105366655B (zh) * 2015-12-10 2018-01-02 四川蓝海化工（集团）有限公司 电容级磷酸晶体的制备方法
CN105366656A (zh) * 2015-12-10 2016-03-02 四川蓝海化工（集团）有限公司 电容级磷酸的纯化方法
CN110255519A (zh) * 2019-07-17 2019-09-20 南京化学试剂股份有限公司 一种药用级磷酸的纯化方法
CN113716537A (zh) * 2021-08-31 2021-11-30 云南云天化股份有限公司 一种粉末状固体磷酸的制备方法
CN113842663B (zh) * 2021-10-27 2025-08-01 中国科学院过程工程研究所 一种制备电子级磷酸的熔融结晶器及其方法与电子级磷酸

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
US4296082A (en) * 1978-04-26 1981-10-20 Albright & Wilson Limited Purification of wet process phosphoric acid
US4215098A (en) * 1978-04-26 1980-07-29 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
ZA863235B (en) 1987-01-28
US4657559A (en) 1987-04-14
KR860008936A (ko) 1986-12-19
KR930006692B1 (ko) 1993-07-22
CA1265315A (fr) 1990-02-06
ATE44719T1 (de) 1989-08-15
JPS6230606A (ja) 1987-02-09
EP0209919B1 (fr) 1989-07-19
TNSN86069A1 (fr) 1990-01-01
PH23763A (en) 1989-11-03
EP0209919A1 (fr) 1987-01-28
BR8602054A (pt) 1987-01-06

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