NL277211A - - Google Patents

Info

Publication number
NL277211A
NL277211A NL277211DA NL277211A NL 277211 A NL277211 A NL 277211A NL 277211D A NL277211D A NL 277211DA NL 277211 A NL277211 A NL 277211A
Authority
NL
Netherlands
Application number
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.)
Publication of NL277211A publication Critical patent/NL277211A/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
    • C01B25/237—Selective elimination of impurities
    • 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
    • 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
    • C01B25/225—Dihydrate process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
NL277211D 1961-04-20 NL277211A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR859273A FR1294872A (fr) 1961-04-20 1961-04-20 Fabrication de l'acide phosphorique

Publications (1)

Publication Number Publication Date
NL277211A true NL277211A (zh)

Family

ID=8753425

Family Applications (1)

Application Number Title Priority Date Filing Date
NL277211D NL277211A (zh) 1961-04-20

Country Status (6)

Country Link
US (1) US3124419A (zh)
BE (1) BE791820Q (zh)
DE (1) DE1265725B (zh)
FR (1) FR1294872A (zh)
GB (1) GB986154A (zh)
NL (1) NL277211A (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA718837A (en) * 1962-06-23 1965-09-28 Toyo Engineering Corporation Wet-process phosphoric acid manufacture by the semihydrate-dihydrate calcium sulphate method
US3388966A (en) * 1964-02-10 1968-06-18 Robert A. Macdonald Ammonium phosphate preparation
US3410656A (en) * 1966-06-01 1968-11-12 Fmc Corp Phosphoric acid purification
US3984525A (en) * 1967-02-01 1976-10-05 Albright & Wilson Limited Manufacture of phosphoric acid
US3619136A (en) * 1968-11-12 1971-11-09 Atlantic Richfield Co Process for producing phosphoric acid
US3956464A (en) * 1970-10-16 1976-05-11 Pennzoil Company Preparation of phosphates
US3943232A (en) * 1974-03-04 1976-03-09 Atlantic Richfield Company Process for the defluorination of dilute fluorine containing aqueous acid solutions
US4026995A (en) * 1976-02-11 1977-05-31 Atlantic Richfield Company Process for defluorination of commercial phosphoric acid
JPS5375196A (en) * 1976-12-15 1978-07-04 Central Glass Co Ltd Removing method for heavy metals from phosphoric acid solution
US4136199A (en) * 1977-06-27 1979-01-23 Occidental Chemical Company Metallic ion removal from phosphoric acid
LU80676A1 (fr) * 1978-12-19 1980-07-21 Metallurgie Hoboken Procede pour enlever des agents salissants de l'acide phosphorique
SE418845B (sv) * 1979-05-10 1981-06-29 Boliden Ab Forfarande for rening av vatprocessfosforsyra
FR2464921A1 (fr) * 1979-09-07 1981-03-20 Grp Franco Senegal Etud Procede de traitement d'un phosphate aluminocalcique
US4311681A (en) * 1980-05-19 1982-01-19 Fmc Corporation Method of regenerating phosphoric acid extraction solvent
DE3421297A1 (de) * 1984-06-08 1985-12-12 Basf Ag, 6700 Ludwigshafen Verfahren zur reduzierung des schwefelsaeuregehaltes und des gehaltes an verunreinigungen in nassverfahrensphosphorsaeure
US5536686A (en) * 1992-10-20 1996-07-16 The Research Foundation Of State University Of New York At Buffalo Phosphate binders for metal-matrix composites

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20994E (en) * 1928-06-05 1939-01-31 Method of treating raw phosphate
US1787192A (en) * 1928-08-11 1930-12-30 Rumford Chemical Works Method of purifying phosphoric acid and the like
US2049032A (en) * 1932-07-02 1936-07-28 Dorr Co Inc Preparation of phosphoric acid
US2003051A (en) * 1933-07-05 1935-05-28 Victor Chemical Works Purification of strong phosphoric acid
US2106223A (en) * 1934-04-06 1938-01-25 Kemiska Patenter Ab Process for the manufacture of superphosphate
US2954284A (en) * 1958-02-13 1960-09-27 Ohio Commw Eng Co Fuel comprising a mixture of ammonium nitrate and metal particles

Also Published As

Publication number Publication date
GB986154A (en) 1965-03-17
BE791820Q (fr) 1973-03-16
US3124419A (en) 1964-03-10
FR1294872A (fr) 1962-06-01
DE1265725B (de) 1968-04-11

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