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FR2324355A1 - Granulation of ammonium nitrate fertilisers - by prilling, screening, and spraying a moving bed of prills - Google Patents

Granulation of ammonium nitrate fertilisers - by prilling, screening, and spraying a moving bed of prills

Info

Publication number
FR2324355A1
FR2324355A1 FR7528545A FR7528545A FR2324355A1 FR 2324355 A1 FR2324355 A1 FR 2324355A1 FR 7528545 A FR7528545 A FR 7528545A FR 7528545 A FR7528545 A FR 7528545A FR 2324355 A1 FR2324355 A1 FR 2324355A1
Authority
FR
France
Prior art keywords
fertilisers
prills
tonnes
day
moving bed
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
FR7528545A
Other languages
French (fr)
Other versions
FR2324355B1 (en
Inventor
Hubert Lacroix
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.)
Azote et Produits Chimiques SA
Original Assignee
Azote et Produits Chimiques 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 Azote et Produits Chimiques SA filed Critical Azote et Produits Chimiques SA
Priority to FR7528545A priority Critical patent/FR2324355A1/en
Publication of FR2324355A1 publication Critical patent/FR2324355A1/en
Application granted granted Critical
Publication of FR2324355B1 publication Critical patent/FR2324355B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C1/00—Ammonium nitrate fertilisers
    • C05C1/02—Granulation; Pelletisation; Stabilisation; Colouring

Landscapes

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

Abstract

Fertilisers in sprayable form, i.e. molten or in concentrated solution or suspension are granulated. Part of the fertiliser is prilled and the prills sieved to eliminate oversize particles and fines. The sieved material is then used to form a moving bed of material which is sprayed with the remainder of the fertiliser, thus increasing the granule size. The yield is increased since over- and under sized particles are not treated. The moving bed of material is smaller than would otherwise be required. The over-or under sized prills are recycled immediately, giving less heat loss. The process is particularly suitable for fertilisers having a high content of ammonium nitrate. In an example, 640 tonnes/day contg. 93.2% NH4NO3, 2% CaCO3 and 3.8% water was treated 384 tonnes/day were prilled giving 371 tonnes/day of the desired size. These were put in a rotating drum and sprayed with 256 tonnes/day of the remaining fertiliser.
FR7528545A 1975-09-18 1975-09-18 Granulation of ammonium nitrate fertilisers - by prilling, screening, and spraying a moving bed of prills Granted FR2324355A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7528545A FR2324355A1 (en) 1975-09-18 1975-09-18 Granulation of ammonium nitrate fertilisers - by prilling, screening, and spraying a moving bed of prills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7528545A FR2324355A1 (en) 1975-09-18 1975-09-18 Granulation of ammonium nitrate fertilisers - by prilling, screening, and spraying a moving bed of prills

Publications (2)

Publication Number Publication Date
FR2324355A1 true FR2324355A1 (en) 1977-04-15
FR2324355B1 FR2324355B1 (en) 1979-03-30

Family

ID=9160108

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7528545A Granted FR2324355A1 (en) 1975-09-18 1975-09-18 Granulation of ammonium nitrate fertilisers - by prilling, screening, and spraying a moving bed of prills

Country Status (1)

Country Link
FR (1) FR2324355A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470634A1 (en) * 1979-11-28 1981-06-12 Mitsui Toatsu Chemicals METHOD AND APPARATUS FOR PRODUCING RELATIVELY LARGE GROWTH DIMENSIONS FROM SOLIDIFIED DROPLETS
EP0569162A1 (en) * 1992-05-05 1993-11-10 Imperial Chemical Industries Plc Granulated ammonium nitrate products

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470634A1 (en) * 1979-11-28 1981-06-12 Mitsui Toatsu Chemicals METHOD AND APPARATUS FOR PRODUCING RELATIVELY LARGE GROWTH DIMENSIONS FROM SOLIDIFIED DROPLETS
EP0569162A1 (en) * 1992-05-05 1993-11-10 Imperial Chemical Industries Plc Granulated ammonium nitrate products

Also Published As

Publication number Publication date
FR2324355B1 (en) 1979-03-30

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Legal Events

Date Code Title Description
ST Notification of lapse