GB583388A - Improvements in and relating to the treatment of chemical substances or compositionscontaining them to increase their water resistance - Google Patents

Improvements in and relating to the treatment of chemical substances or compositionscontaining them to increase their water resistance

Info

Publication number
GB583388A
GB583388A GB1583744A GB1583744A GB583388A GB 583388 A GB583388 A GB 583388A GB 1583744 A GB1583744 A GB 1583744A GB 1583744 A GB1583744 A GB 1583744A GB 583388 A GB583388 A GB 583388A
Authority
GB
United Kingdom
Prior art keywords
sulphates
calcined gypsum
oil
oiled
composition
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
GB1583744A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1583744A priority Critical patent/GB583388A/en
Publication of GB583388A publication Critical patent/GB583388A/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
    • B01J2/28—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using special binding agents
    • 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
    • B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained

Landscapes

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

Abstract

Substantially dry chemical substances or compositions containing them, particularly fertilizers, e.g., ammonium nitrate, are rendered less susceptible to moisture by distributing a hydrophobic mineral, vegetable or animal (including fish) oil on the surface of the particles and covering the oiled particles with a coating of a calcined gypsum. The oils are preferably of low or medium viscosity or if viscous, solutions thereof in solvents such as carbon tetrachloride or naphtha are used, and may be applied by spraying. This may be carried out at temperatures up to 100 DEG C. The calcined gypsum specified may be plaster of paris, a soluble anhydrite or anhydrous calcium sulphate plaster containing sulphates and acid sulphates of alkali metals and ammonium, cupric, zinc, ferrous, ferric and aluminium sulphates and their double sulphates as hydration accelerators. The calcined gypsum may be introduced by adding it gradually to or by blowing it into the oiled composition. In a modified process, one or more of the components of a composition may be treated with the oil and the powder and then mixed with the other component or components.ALSO:Substantially dry fertilizers, e.g., ammonium nitrate, are rendered less susceptible to moisture by distributing a hydrophobic mineral, vegetable or animal (including fish) oil on the surface of the particles and covering the oiled particles with a coating of calcined gypsum. The oils are preferably of low or medium viscosity or if viscous, solutions thereof in solvents such as carbon tetrachloride or naphtha, and may be applied by spraying. This may be carried out at temperatures up to 100 DEG C. The calcined gypsum specified may be plaster of paris, a soluble anhydrite or anhydrous calcium sulphate plaster containing sulphates and acid sulphates of alkali metals and ammonium, cupric, zinc, ferrous, ferric and aluminium sulphates and their double sulphates as hydration accelerators. The calcined gypsum may be introduced by adding it gradually to or by blowing it into the oiled composition. In a modified process one or more of the components of a composition may be treated with the oil and the powder and then mixed with the other component or components.
GB1583744A 1944-08-18 1944-08-18 Improvements in and relating to the treatment of chemical substances or compositionscontaining them to increase their water resistance Expired GB583388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1583744A GB583388A (en) 1944-08-18 1944-08-18 Improvements in and relating to the treatment of chemical substances or compositionscontaining them to increase their water resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1583744A GB583388A (en) 1944-08-18 1944-08-18 Improvements in and relating to the treatment of chemical substances or compositionscontaining them to increase their water resistance

Publications (1)

Publication Number Publication Date
GB583388A true GB583388A (en) 1946-12-17

Family

ID=10066412

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1583744A Expired GB583388A (en) 1944-08-18 1944-08-18 Improvements in and relating to the treatment of chemical substances or compositionscontaining them to increase their water resistance

Country Status (1)

Country Link
GB (1) GB583388A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1137049B (en) * 1960-09-01 1962-09-27 Scholven Chemie Ag Process for the production of non-caking and non-dusting fertilizers
DE1237146B (en) * 1962-01-20 1967-03-23 Huettenwerk Salzgitter Ag Process for the production of solid and disintegration-resistant granules from Thomas flour
DE1243213B (en) * 1961-08-03 1967-06-29 Armour & Co Process for the production of grainy, nitrogenous fertilizers
WO1986006061A1 (en) * 1985-04-11 1986-10-23 Commonwealth Scientific And Industrial Research Or Fertilization of crops
DE102004024697B4 (en) * 2004-05-19 2014-04-03 GFR Gesellschaft für die Aufbereitung und Verwertung von Reststoffen mbH Conditioning of hydrophobized fire-extinguishing powders

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1137049B (en) * 1960-09-01 1962-09-27 Scholven Chemie Ag Process for the production of non-caking and non-dusting fertilizers
DE1243213B (en) * 1961-08-03 1967-06-29 Armour & Co Process for the production of grainy, nitrogenous fertilizers
DE1237146B (en) * 1962-01-20 1967-03-23 Huettenwerk Salzgitter Ag Process for the production of solid and disintegration-resistant granules from Thomas flour
WO1986006061A1 (en) * 1985-04-11 1986-10-23 Commonwealth Scientific And Industrial Research Or Fertilization of crops
DE102004024697B4 (en) * 2004-05-19 2014-04-03 GFR Gesellschaft für die Aufbereitung und Verwertung von Reststoffen mbH Conditioning of hydrophobized fire-extinguishing powders

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