GB1048134A - Fertilizer - Google Patents

Fertilizer

Info

Publication number
GB1048134A
GB1048134A GB1918863A GB1918863A GB1048134A GB 1048134 A GB1048134 A GB 1048134A GB 1918863 A GB1918863 A GB 1918863A GB 1918863 A GB1918863 A GB 1918863A GB 1048134 A GB1048134 A GB 1048134A
Authority
GB
United Kingdom
Prior art keywords
melt
nh4no3
h2so4
moles
water
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.)
Expired
Application number
GB1918863A
Inventor
Geoffrey George Brown
Keith Frederick James Thatcher
Valroy Clarence Vinyard
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.)
Fisons Fertilizers Ltd
Fisons Ltd
Original Assignee
Fisons Fertilizers Ltd
Fisons Ltd
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 Fisons Fertilizers Ltd, Fisons Ltd filed Critical Fisons Fertilizers Ltd
Priority to GB1918863A priority Critical patent/GB1048134A/en
Priority to DE19641592636 priority patent/DE1592636A1/en
Priority to DK243764A priority patent/DK109602C/en
Priority to FR974447A priority patent/FR1426120A/en
Priority to BE648036D priority patent/BE648036A/xx
Priority to NL6405487A priority patent/NL6405487A/xx
Publication of GB1048134A publication Critical patent/GB1048134A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C1/00—Ammonium nitrate fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/02—Superphosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/04—Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/06—Ammoniation of superphosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B3/00—Fertilisers based essentially on di-calcium phosphate
    • 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

Concentrated fertilizers containing ammonium phosphate are prepared by reacting together 2.0 to 2.5 moles of calcium phosphate, 6 to 30 moles of ammonium nitrate, 2 to 6 moles of ammonia and less than 3 moles of H2SO4 to form a melt having a pH 2.5 to 5.5 (measured by dissolving 1 part of melt in 9 parts water) at a temperature of 130 DEG C. to b.p. of the melt and cooling the melt. Ca(H2PO4)2, NH4NO3, H2SO4\t and NH3 may be added to a previously prepared melt which may be at its b.p. and comprise NH4NO3, NH4H2PO4, CaSO4, CaHPO4 and water; CaHPO4 being at 0 to 100% by weight based on the CaSO4 and 2 to 7% water may be present. A gas which is inert to the reaction (e.g. air) may be passed through the melt. The Ca(H2PO4)2 may be in the form of single or tripl superphosphate or a mixture of these and it may be used as a slurry formed by reacting phosphate rock with H2SO4 and/or H3PO4 in the presence of part or all the NH4NO3 used in the process. NH4NO3 may be added as an 85-95% aqueous solution at 80-130 DEG C. The H2SO4 may be > 95% by weight and added so that the amount of sulphate ion present is at least sufficient to react with all the Ca derived from Ca(H2PO4)2. In order to increase the proportion of water-soluble P2O5 above that available from triple superphosphate, H3PO4 and an equivalent amount of NH3 may be included in the mixture. The product melt may contain 40 to 85% by weight NH4NO3 and the N: P2O5 ratio of the melt may lie between 3: 1 to 1: 2. In the examples the process may be carried out in one or more reaction vessels. The product is disintegrated after cooling to give non-caking granules.
GB1918863A 1963-05-15 1963-05-15 Fertilizer Expired GB1048134A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1918863A GB1048134A (en) 1963-05-15 1963-05-15 Fertilizer
DE19641592636 DE1592636A1 (en) 1963-05-15 1964-05-12 Process for the production of concentrated fertilizers
DK243764A DK109602C (en) 1963-05-15 1964-05-14 Process for the preparation of concentrated fertilizers containing nitrogen and phosphorus.
FR974447A FR1426120A (en) 1963-05-15 1964-05-14 Process for preparing concentrated fertilizers containing at least nitrogen and phosphorus
BE648036D BE648036A (en) 1963-05-15 1964-05-15
NL6405487A NL6405487A (en) 1963-05-15 1964-05-15

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1918963 1963-05-15
GB1918863A GB1048134A (en) 1963-05-15 1963-05-15 Fertilizer

Publications (1)

Publication Number Publication Date
GB1048134A true GB1048134A (en) 1966-11-09

Family

ID=26253902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1918863A Expired GB1048134A (en) 1963-05-15 1963-05-15 Fertilizer

Country Status (5)

Country Link
BE (1) BE648036A (en)
DE (1) DE1592636A1 (en)
DK (1) DK109602C (en)
GB (1) GB1048134A (en)
NL (1) NL6405487A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325887A1 (en) * 1987-12-28 1989-08-02 Phosphoric Fertilizers Industry Ltd. Production of fertilizer NP and NPK with NP slurry process achieving increased percentage of water solubility
WO1999010084A1 (en) * 1997-08-26 1999-03-04 Clue Process for the preparation of fertilizers and sulfur compounds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325887A1 (en) * 1987-12-28 1989-08-02 Phosphoric Fertilizers Industry Ltd. Production of fertilizer NP and NPK with NP slurry process achieving increased percentage of water solubility
WO1999010084A1 (en) * 1997-08-26 1999-03-04 Clue Process for the preparation of fertilizers and sulfur compounds
US6344066B1 (en) 1997-08-26 2002-02-05 Clue Process for the preparation of fertilizers and sulfur compounds

Also Published As

Publication number Publication date
BE648036A (en) 1964-11-16
NL6405487A (en) 1964-11-16
DK109602C (en) 1968-05-20
DE1592636A1 (en) 1971-01-21

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