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GB389508A - Improvements in the production of fertilisers - Google Patents

Improvements in the production of fertilisers

Info

Publication number
GB389508A
GB389508A GB26080/31A GB2608031A GB389508A GB 389508 A GB389508 A GB 389508A GB 26080/31 A GB26080/31 A GB 26080/31A GB 2608031 A GB2608031 A GB 2608031A GB 389508 A GB389508 A GB 389508A
Authority
GB
United Kingdom
Prior art keywords
caking
granules
substance
caking substance
coloured
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
GB26080/31A
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 GB26080/31A priority Critical patent/GB389508A/en
Publication of GB389508A publication Critical patent/GB389508A/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
    • B01J2/30—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • 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

Landscapes

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

Abstract

The resistance to caking of granular fertilizing-salts such as sodium, calcium, or ammonium nitrate, or superphosphate is improved by agitating with the granules a preferably small quantity of dry powdered non-caking substance, e.g. 0,5-3,0 per cent of the weight of the granules, in the absence of binding agents and for a sufficient period of time to produce a smooth coating of non-caking substance on the surface of the granules. The non-caking substance may be rock phosphate, calcium carbonate, talc, asbestos or graphite. Coloured granules may be produced by using a coloured non-caking substance such as red iron oxide or by mixing a coloured material, e.g. ultramarine with the non-caking substance. If the granular fertilizers contain one or more non-caking constituents the non-caking substance applied as a coating may comprise one or more of the constituents, e.g. finely powdered chalk may be used to coat granules containing ammonium nitrate and calcium carbonate.ALSO:The resistance to caking of granular fertilizers is improved by agitating with the granules a preferably small quantity of dry powdered non-caking substance, e.g. 0,5-3,0 per cent of the weight of the granules, in the absence of binding agents and for a sufficient period of time to produce a smooth coating of non-caking substance on the surface of the granules. The non-caking substance may be rock phosphate, calcium carbonate, talc, asbestos or graphite. Coloured granules may be produced by using a coloured non-caking substance such as red iron oxide or by mixing a coloured material, e.g. ultramarine with the non-caking substance. If the granular fertilizers contain one or more non-caking constituents the non-caking substance applied as a coating may comprise one or more of the constituents, e.g. finely powdered chalk may be used to coat granules containing ammonium nitrate and calcium carbonate.
GB26080/31A 1931-09-17 1931-09-17 Improvements in the production of fertilisers Expired GB389508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26080/31A GB389508A (en) 1931-09-17 1931-09-17 Improvements in the production of fertilisers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26080/31A GB389508A (en) 1931-09-17 1931-09-17 Improvements in the production of fertilisers

Publications (1)

Publication Number Publication Date
GB389508A true GB389508A (en) 1933-03-17

Family

ID=10238028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26080/31A Expired GB389508A (en) 1931-09-17 1931-09-17 Improvements in the production of fertilisers

Country Status (1)

Country Link
GB (1) GB389508A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747198C (en) * 1934-02-20 1944-09-13 Ruhrchemie Ag Process to increase the shelf life and throwing ability of dune salts or dune salt mixtures
DE847451C (en) * 1942-12-31 1952-08-25 Basf Ag Process for preventing the caking of salts or salt mixtures
DE938842C (en) * 1947-01-06 1956-02-09 Ici Ltd Process for the production of non-caking and hardening ammonium nitrate
DE973050C (en) * 1952-07-06 1959-11-19 Ruhrchemie Ag Process for the production of a lime ammonium nitrate which can be stored well
DE1154445B (en) * 1960-08-11 1963-09-19 Basf Ag Process for the production of granulated ammonium nitrate with low hygroscopicity and high bulk weight
US3317307A (en) * 1964-01-20 1967-05-02 Grace W R & Co Method of granulating fertilizer
FR2523481A1 (en) * 1982-03-17 1983-09-23 Gattys Ing Buero F J PROCESS FOR STABILIZING UNSTABLE PELLETS MADE OF POWDERY MINERAL MATERIALS
EP3831919A1 (en) * 2019-12-04 2021-06-09 Yara International ASA Method for the continuous production of a mixture with a pre-defined ratio of fully colored and non-colored particles and system and use thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747198C (en) * 1934-02-20 1944-09-13 Ruhrchemie Ag Process to increase the shelf life and throwing ability of dune salts or dune salt mixtures
DE847451C (en) * 1942-12-31 1952-08-25 Basf Ag Process for preventing the caking of salts or salt mixtures
DE938842C (en) * 1947-01-06 1956-02-09 Ici Ltd Process for the production of non-caking and hardening ammonium nitrate
DE973050C (en) * 1952-07-06 1959-11-19 Ruhrchemie Ag Process for the production of a lime ammonium nitrate which can be stored well
DE1154445B (en) * 1960-08-11 1963-09-19 Basf Ag Process for the production of granulated ammonium nitrate with low hygroscopicity and high bulk weight
US3317307A (en) * 1964-01-20 1967-05-02 Grace W R & Co Method of granulating fertilizer
FR2523481A1 (en) * 1982-03-17 1983-09-23 Gattys Ing Buero F J PROCESS FOR STABILIZING UNSTABLE PELLETS MADE OF POWDERY MINERAL MATERIALS
EP3831919A1 (en) * 2019-12-04 2021-06-09 Yara International ASA Method for the continuous production of a mixture with a pre-defined ratio of fully colored and non-colored particles and system and use thereof
WO2021110906A1 (en) 2019-12-04 2021-06-10 Yara International Asa Method for the continuous production of a mixture with a pre-defined ratio of fully colored and non-colored fertilizer particles and system and use thereof

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