GB944135A - Fertilisers - Google Patents

Fertilisers

Info

Publication number
GB944135A
GB944135A GB1233562A GB1233562A GB944135A GB 944135 A GB944135 A GB 944135A GB 1233562 A GB1233562 A GB 1233562A GB 1233562 A GB1233562 A GB 1233562A GB 944135 A GB944135 A GB 944135A
Authority
GB
United Kingdom
Prior art keywords
prills
zone
ammoniating
nitrogen
ratio
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
GB1233562A
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.)
Spencer Chemical Co
Original Assignee
Spencer Chemical Co
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 Spencer Chemical Co filed Critical Spencer Chemical Co
Publication of GB944135A publication Critical patent/GB944135A/en
Expired 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

Fertilizers are prepared by contacting the surfaces of ammonium nitrate or urea prills with phosphoric acid and then ammoniating, to obtain coated prills having a P2O5 content at least sufficient to provide a 6 : 1 ratio of nitrogen to P2O5. The prills are passed through a rotating drum where they are sprayed with phosphoric acid in a first zone and with liquid ammonia in a later zone, and then dried. Some of the coated frills are recycled to ensure acid does not pass into the ammoniating zone. The temperature is below 200 DEG F., preferably 140 DEG to 180 DEG F. The nitrogen to P2O5 ratio may be 2 to 4 : 1 for ammonium nitrate prills, and 2 to 4.5 : 1 for urea prills. Examples are given.
GB1233562A 1961-04-07 1962-03-30 Fertilisers Expired GB944135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10137861A 1961-04-07 1961-04-07

Publications (1)

Publication Number Publication Date
GB944135A true GB944135A (en) 1963-12-11

Family

ID=22284350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233562A Expired GB944135A (en) 1961-04-07 1962-03-30 Fertilisers

Country Status (1)

Country Link
GB (1) GB944135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510550A1 (en) * 1981-07-31 1983-02-04 Generale Engrais Sa Nitrogen phosphorus fertiliser granules - having a core of low hygroscopicity and a urea or ammonium nitrate outer layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510550A1 (en) * 1981-07-31 1983-02-04 Generale Engrais Sa Nitrogen phosphorus fertiliser granules - having a core of low hygroscopicity and a urea or ammonium nitrate outer layer

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