EP1404629A1 - Granules de fertilisant contenant du nitrate d'ammonium - Google Patents

Granules de fertilisant contenant du nitrate d'ammonium

Info

Publication number
EP1404629A1
EP1404629A1 EP01965109A EP01965109A EP1404629A1 EP 1404629 A1 EP1404629 A1 EP 1404629A1 EP 01965109 A EP01965109 A EP 01965109A EP 01965109 A EP01965109 A EP 01965109A EP 1404629 A1 EP1404629 A1 EP 1404629A1
Authority
EP
European Patent Office
Prior art keywords
fertilizer granules
coating
ammonium nitrate
fertilizer
weight
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.)
Withdrawn
Application number
EP01965109A
Other languages
German (de)
English (en)
Inventor
Erik Alexander Bijpost
Arjan Bruinekool
John Van De Hoeven
Arjen Wim Velzel
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.)
Holland Novochem BV
Original Assignee
Holland Novochem BV
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 Holland Novochem BV filed Critical Holland Novochem BV
Publication of EP1404629A1 publication Critical patent/EP1404629A1/fr
Withdrawn legal-status Critical Current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
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C05G5/38—Layered or coated, e.g. dust-preventing coatings layered or coated with wax or resins

Definitions

  • fertilizer granules containing ammonium nitrate especially ammonium nitrate (AN) and calcium ammonium nitrate (CAN)
  • AN ammonium nitrate
  • CAN calcium ammonium nitrate
  • EP-A-0 113 687 there is disclosed a treatment of the nitrate containing fertilizer with a mixture of mineral oil, mineral wax, alkylamine and a phosphate ester resulting into a protection against moisture of more than 60% compared to the blank. Later on, several improvements of water repellence have been published. Most of the processes have been based on addition of a mixture of active polar components with oil and petroleum wax blends.
  • fatty amines and fatty alcohol's are fatty amines and fatty alcohol's (EP-A-0 574 306), carboxylic acid (or anhydride) and alcohol's or amines (EP-A-0 692 468), carboxylic acid (or corresponding metal salts) and fatty amide (EP-A-0 768 287), and mixtures of amine phosphate esters and amine sulphonates (EP-A-0 341 102).
  • the invention relates to fertilizer granules containing ammonium nitrate and provided with a coating as protection against moisture uptake characterized in that the granules are coated with a petroleum wax which contains : alkanes with a carbon chain length between 18 and 40, with a linearity of the carbon chains higher than 40 %, solidification range being between 50 and 15 ° C and in that the petroleum wax is a paraffin or a hydrocarbon wax.
  • paraffin and hydrocarbon waxes can improve the performance up to 60% compared to the blank, which is almost equal with blends from amines and phosphate esters.
  • the paraffin waxes have to possess alkanes with a defined carbon chain length (C18-C40) as well as a specific linearity. A high amount (>55%) of normal alkanes is necessary to obtain a good performance.
  • the solidification range of the paraffin mixture is of great importance: the best results have been obtained with blends, which have a solidification range between 50 and 15 °C.
  • the efficiency of the coating can further be improved by adding a mixture of active polar organic compounds, preferably containing an alkylamine with a surface-active compound, more preferably containing a phosphate ester.
  • the amount of active polar organic compounds added to the blend is preferably 0,01 - 15
  • the amount of the paraffin wax added is 0,01 - 0,30 % by weight, based upon the total weight of the fertilizer granules and the coating, more preferably 0,06-0,15 % by weight. These small amounts of coating blend have proven to give satisfactory results.
  • the invention will now further be described based upon data collected by means of experiments.
  • the experiments have shown that the active components mainly contribute to the quality of the top layer. Both the appearance and the hardness improve substantially, especially after addition of a mixture of amine and phosphate ester.
  • the different data were measured in the following way, and the experiments were carried out based upon 5 materials and procedures as described below.
  • the fertilizers used stabilised calcic ammonium nitrate (27 % nitrogen) or ammonium nitrate (33.5 % nitrogen), has been purchased from Hydro Sluiskil, The Netherlands.
  • the fertilizer 1.0 kilogram per sample is stored in sealed plastic jars in an oven at 35 °C for 16 hours. The treatment occurs as follows. The fertilizer is placed in a rotating coating drum, which has a
  • Two 200-ml plastic beakers are both filled with 160 grams of (blank or treated) fertilizer. The weight of both the plastic beaker and the fertilizer are measured on an analytical balance. The combined weight is registered. The beakers are placed into a climatic chamber under the following conditions: relative humidity 80%, temperature 20 °C. After
  • MP (MUb - MVs) * 100 % in which :
  • the hardness of the top layer has been defined as follows :
  • the hardness of the top layer has been inspected.
  • the hardness can be determined by measuring the power (in Newton) necessary to penetrate the top layer.
  • ammonium nitrate (33.5 % N) has been sprayed with 1000 ppm of paraffin (1-10).
  • the performance of the individual petroleum waxes is:
  • Example 4 The experiments in Example 4 have demonstrated that the addition of amine and/or phosphate ester towards paraffin 3 hardly affects the performance towards water repellence on ammonium nitrate containing fertilisers. However, the active components contribute strongly to the quality of the top layer: the appearance as well as the hardness improves substantially.
  • paraffin waxes with a high amount of linear alkanes (>55%) and a solidification range between 50 and 10 °C are able to protect ammonium nitrate containing fertilisers from moisture very efficiently.
  • active polar components such as alkylamines and alkyl phosphate esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)

Abstract

La présente invention concerne de granulés de fertilisant contenant du nitrate d'ammonium avec un enrobage de protection contre l'absorption d'humidité, dans lesquels les granulés sont enrobés d'une cire de pétrole qui contient : des alcanes avec une longueur de chaîne carbonée entre 18 et 40 présentant une linéarité des chaînes carbonée supérieure à 40 %, la plage de solidification se situant entre 50 et 15 °C, et la cire de pétrole est une cire de paraffine ou d'hydrocarbure.
EP01965109A 2001-07-10 2001-07-10 Granules de fertilisant contenant du nitrate d'ammonium Withdrawn EP1404629A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2001/007969 WO2003006399A1 (fr) 2001-07-10 2001-07-10 Granules de fertilisant contenant du nitrate d'ammonium

Publications (1)

Publication Number Publication Date
EP1404629A1 true EP1404629A1 (fr) 2004-04-07

Family

ID=8164502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01965109A Withdrawn EP1404629A1 (fr) 2001-07-10 2001-07-10 Granules de fertilisant contenant du nitrate d'ammonium

Country Status (2)

Country Link
EP (1) EP1404629A1 (fr)
WO (1) WO2003006399A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0502337D0 (en) * 2005-02-04 2005-03-16 Univ York Isolation and fractionation of waxes from plants
EP3693351A3 (fr) 2014-05-05 2020-12-09 SABIC Global Technologies B.V. Engrais granulaires enrobés, leurs procédés de fabrication et leurs utilisations
AU2016295632B2 (en) 2015-07-20 2020-06-18 SABIC Agri-Nutrients Company Fertilizer composition and methods of making and using same
WO2017087265A1 (fr) 2015-11-16 2017-05-26 Sabic Global Technologies B.V. Procédés de fabrication d'engrais granulaires enrobés
BR112018009874B1 (pt) 2015-11-16 2022-10-04 SABIC Global Technologies B.V Fertilizantes granulares revestidos, métodos de fabricação dos mesmos e usos dos mesmos
WO2017137902A1 (fr) 2016-02-08 2017-08-17 Sabic Global Technologies B.V. Procédé de fabrication de noyau d'ensemencement d'engrais
AU2018255907B2 (en) 2017-04-19 2023-02-02 SABIC Agri-Nutrients Company Enhanced efficiency fertilizer with urease inhibitor and nitrification inhibitor separated within the same particle
AU2018255920B2 (en) 2017-04-19 2023-08-31 SABIC Agri-Nutrients Company Enhanced efficiency fertilizer with urease inhibitor and nitrification inhibitor in separate particles
EP3612507A1 (fr) 2017-04-20 2020-02-26 SABIC Global Technologies B.V. Engrais à efficacité améliorée comportant une composition de poudre enrobée
US11021409B2 (en) 2017-08-09 2021-06-01 Sabic Global Technologies B.V. Extruded fertilizer granules with urease and/or nitrification inhibitors

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1312314A (en) * 1970-04-27 1973-04-04 Armour Hess Chem Ltd Coating compositions
NL167607B (nl) * 1977-04-28 1981-08-17 Azote Sa Cie Neerlandaise Ammoniumnitraat bevattende meststofkorrels en werkwijze ter vervaardiging daarvan.
NL8300043A (nl) 1983-01-06 1984-08-01 Azote Sa Cie Neerlandaise Ammoniumnitraat bevattende meststofkorrels en bekledingsmengsel daarvoor.
FR2629815B1 (fr) 1988-04-07 1991-10-18 Produits Ind Cie Fse Produits, compositions et traitements antimottants pour sels, engrais simples et complexes
FR2692166B1 (fr) 1992-06-11 1994-07-22 Ceca Sa Procede de traitement d'engrais par compositions hydrophobantes en vue de leur stockage en vrac.
US5567910A (en) 1994-05-25 1996-10-22 Ici Canada Inc. Coating for ammonium nitrate prills
FR2722427B1 (fr) 1994-07-13 1997-01-24 Francais Prod Ind Cfpi Procede de traitement d'engrais pour lutter contrela reprise d'humidite
US5917110A (en) 1996-10-18 1999-06-29 Tetra Technologies, Inc. Moisture-resistant calcium containing particles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03006399A1 *

Also Published As

Publication number Publication date
WO2003006399A1 (fr) 2003-01-23

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