GB1115071A - Granulation process - Google Patents

Granulation process

Info

Publication number
GB1115071A
GB1115071A GB1292264A GB1292264A GB1115071A GB 1115071 A GB1115071 A GB 1115071A GB 1292264 A GB1292264 A GB 1292264A GB 1292264 A GB1292264 A GB 1292264A GB 1115071 A GB1115071 A GB 1115071A
Authority
GB
United Kingdom
Prior art keywords
liquid
nitrate
molten material
phosphate
boiling
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
GB1292264A
Inventor
John Wilson Fox
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 GB1292264A priority Critical patent/GB1115071A/en
Publication of GB1115071A publication Critical patent/GB1115071A/en
Expired 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
    • B01J2/06—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 liquid medium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B19/00—Granulation or pelletisation of phosphatic fertilisers, other than slag

Landscapes

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

Abstract

Granules, e.g. of concentrated fertilizer, are prepared by feeding a continuous stream of molten material e.g. from one or more jets of up to 7 mm. diameter on to and into vigorously boiling liquid, the localized vaporization whereof breaks up the stream into rapidly cooled substantially spherical drops; the boiling point of the liquid, which does not dissolve or react with the molten material, being at least 20 DEG C. and preferably 70-100 DEG C. less than the melting point of the material and the liquid preferably being of lower density. The molten material may comprise ammonium nitrate, sulphate nitrate or phosphate or mixtures of the nitrate and monammonium phosphate and/or diammonium phosphate, or mixtures of ammonium nitrate with potassium phosphate or nitrate, sodium nitrate, urea or alkali metal hydroxides. The molten material may also contain solids in suspension, e.g. calcium sulphate, dicalcium phosphate. The boiling liquid is selected from paraffin, cyclohexane, benzene, toluene or halogenated aliphatic and aromatic hydrocarbons or ketones, ethers and esters, of which examples are given, or tetralin, methyl " Cellosolve " (Registered Trade Mark), carbon disulphide and silicones. The boiling liquid may also be dissolved in a different liquid at a temperature below its boiling point; it is preferably maintained at boiling point by the heat supplied by the molten material and vaporized liquid is condensed and returned to the liquid.
GB1292264A 1964-03-26 1964-03-26 Granulation process Expired GB1115071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1292264A GB1115071A (en) 1964-03-26 1964-03-26 Granulation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1292264A GB1115071A (en) 1964-03-26 1964-03-26 Granulation process

Publications (1)

Publication Number Publication Date
GB1115071A true GB1115071A (en) 1968-05-22

Family

ID=10013594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1292264A Expired GB1115071A (en) 1964-03-26 1964-03-26 Granulation process

Country Status (1)

Country Link
GB (1) GB1115071A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290246A1 (en) * 1974-11-07 1976-06-04 Guiller Jacques Transformation of liquid products into small granules - by press injection into a bath of refrigerant
NL1007904C2 (en) * 1997-12-24 1999-06-25 Goudsche Machinefabriek Bv Method and device for forming granulate from a melt of chemical products.
WO2007071512A1 (en) 2005-12-20 2007-06-28 Symrise Gmbh & Co. Kg Spherical menthol particles
CN103242077A (en) * 2013-05-07 2013-08-14 宁波致富宝生物科技有限公司 Improved composite potassium dihydrogen leaf fertilizer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290246A1 (en) * 1974-11-07 1976-06-04 Guiller Jacques Transformation of liquid products into small granules - by press injection into a bath of refrigerant
NL1007904C2 (en) * 1997-12-24 1999-06-25 Goudsche Machinefabriek Bv Method and device for forming granulate from a melt of chemical products.
WO1999033555A1 (en) * 1997-12-24 1999-07-08 Goudsche Machinefabriek B.V. Method and apparatus for forming granulate from a melt of chemical products
WO2007071512A1 (en) 2005-12-20 2007-06-28 Symrise Gmbh & Co. Kg Spherical menthol particles
CN103242077A (en) * 2013-05-07 2013-08-14 宁波致富宝生物科技有限公司 Improved composite potassium dihydrogen leaf fertilizer

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