FR2092692A1 - Highly concentrated ammonium phosphate/ammonium - nitrate fertilizer - by controlled nitricacid digestion of mineral ph - Google Patents

Highly concentrated ammonium phosphate/ammonium - nitrate fertilizer - by controlled nitricacid digestion of mineral ph

Info

Publication number
FR2092692A1
FR2092692A1 FR7021028A FR7021028A FR2092692A1 FR 2092692 A1 FR2092692 A1 FR 2092692A1 FR 7021028 A FR7021028 A FR 7021028A FR 7021028 A FR7021028 A FR 7021028A FR 2092692 A1 FR2092692 A1 FR 2092692A1
Authority
FR
France
Prior art keywords
mineral
ammonium
nitricacid
digestion
controlled
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7021028A
Other languages
French (fr)
Other versions
FR2092692B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ugine Kuhlmann SA
Original Assignee
Ugine Kuhlmann SA
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 Ugine Kuhlmann SA filed Critical Ugine Kuhlmann SA
Priority to FR7021028A priority Critical patent/FR2092692A1/en
Publication of FR2092692A1 publication Critical patent/FR2092692A1/en
Application granted granted Critical
Publication of FR2092692B1 publication Critical patent/FR2092692B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

Prepn. of fertilisers with a N:P2O5 ratio of approx. 1:1 by (a) treating a mineral phosphate with nitric acid and a source of SO42- ions e.g. ammonium sulphate, and opt. H2SO4, the concn. of HNO3 being kept at 45% of the theoretical amount required for dissolving the chalk present in the mineral, and the source of SO42- ions and opt. H2SO4 combined being sufficient to pt. the chalk present as CaSO4. (b) separating the CaSO4 ppt. concentrating the nitrate and treating it with NH3 at a pressure slightly above atmos. to give a product which is mainly (NH4)2HPO4.
FR7021028A 1970-06-08 1970-06-08 Highly concentrated ammonium phosphate/ammonium - nitrate fertilizer - by controlled nitricacid digestion of mineral ph Granted FR2092692A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7021028A FR2092692A1 (en) 1970-06-08 1970-06-08 Highly concentrated ammonium phosphate/ammonium - nitrate fertilizer - by controlled nitricacid digestion of mineral ph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7021028A FR2092692A1 (en) 1970-06-08 1970-06-08 Highly concentrated ammonium phosphate/ammonium - nitrate fertilizer - by controlled nitricacid digestion of mineral ph

Publications (2)

Publication Number Publication Date
FR2092692A1 true FR2092692A1 (en) 1972-01-28
FR2092692B1 FR2092692B1 (en) 1974-02-01

Family

ID=9056860

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7021028A Granted FR2092692A1 (en) 1970-06-08 1970-06-08 Highly concentrated ammonium phosphate/ammonium - nitrate fertilizer - by controlled nitricacid digestion of mineral ph

Country Status (1)

Country Link
FR (1) FR2092692A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175944A (en) * 1978-06-26 1979-11-27 Mobil Oil Corporation Removal of fluorine during production of fertilizer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323386A (en) 1978-11-03 1982-04-06 Norsk Hydro A.S. Method of manufacturing NP- or NPK-containing fertilizers from magnesium containing phosphate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011875A (en) * 1957-03-13 1961-12-05 Victor Chemical Works Apparatus for producing ammonium phosphate solutions
GB967829A (en) * 1960-11-09 1964-08-26 Potasse & Engrais Chimiques Improvements in or relating to complex fertilizers
NL6611364A (en) * 1965-08-13 1967-02-14
FR1522021A (en) * 1966-05-12 1968-04-19 Commercial Solvents Corp Fertilizer preparation process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011875A (en) * 1957-03-13 1961-12-05 Victor Chemical Works Apparatus for producing ammonium phosphate solutions
GB967829A (en) * 1960-11-09 1964-08-26 Potasse & Engrais Chimiques Improvements in or relating to complex fertilizers
NL6611364A (en) * 1965-08-13 1967-02-14
FR1522021A (en) * 1966-05-12 1968-04-19 Commercial Solvents Corp Fertilizer preparation process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175944A (en) * 1978-06-26 1979-11-27 Mobil Oil Corporation Removal of fluorine during production of fertilizer

Also Published As

Publication number Publication date
FR2092692B1 (en) 1974-02-01

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Legal Events

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