GB1448031A - Method of granulating powdery material in particular urea - Google Patents

Method of granulating powdery material in particular urea

Info

Publication number
GB1448031A
GB1448031A GB3596174A GB3596174A GB1448031A GB 1448031 A GB1448031 A GB 1448031A GB 3596174 A GB3596174 A GB 3596174A GB 3596174 A GB3596174 A GB 3596174A GB 1448031 A GB1448031 A GB 1448031A
Authority
GB
United Kingdom
Prior art keywords
powder
urea
granules
bin
aug
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
GB3596174A
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.)
Supra AB
Original Assignee
Supra AB
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 Supra AB filed Critical Supra AB
Publication of GB1448031A publication Critical patent/GB1448031A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0092—Dyes in solid form
    • C09B67/0095—Process features in the making of granulates
    • 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
    • B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/005—Post-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fertilizers (AREA)
  • Glanulating (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1448031 Granulating fertilizers SUPRA AB 15 Aug 1974 [17 Aug 1973] 35961/74 Heading C1B [Also in Division B5] Powder, e.g. urea and urea-based NP and NPK fertilizers, ceramics and cement, is granulated by feeding the powder to a rotating dish granulator 11 and heating the powder in a stationary zone in the dish to cause partial melting of a component of the powder, without completely melting the powder, thereby causing the powder to adhere and form granules. Urea crystals are fed from a bin 12 by a screw conveyer 13 on to a granulator 11 and a zone is heated to 115‹ to 125‹ C. by burners 16 or by hot air, steam or focused radiation from electric or gas heaters (not shown). The granules formed are thrown on to a conveyer 14 leading to a receiver and cooler 15 via a screening device (not shown) which returns undersize granules to the bin 12. Urea may be present in other powders as a binder.
GB3596174A 1973-08-17 1974-08-15 Method of granulating powdery material in particular urea Expired GB1448031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7311222A SE377768B (en) 1973-08-17 1973-08-17

Publications (1)

Publication Number Publication Date
GB1448031A true GB1448031A (en) 1976-09-02

Family

ID=20318260

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3596174A Expired GB1448031A (en) 1973-08-17 1974-08-15 Method of granulating powdery material in particular urea

Country Status (9)

Country Link
JP (1) JPS5087968A (en)
DE (1) DE2436863A1 (en)
DK (1) DK412174A (en)
FI (1) FI229574A (en)
FR (1) FR2240758A1 (en)
GB (1) GB1448031A (en)
NL (1) NL7410275A (en)
NO (1) NO137274C (en)
SE (1) SE377768B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7128936B1 (en) 2000-01-12 2006-10-31 Niro A/S Process and apparatus for agglomeration of powders

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008083A1 (en) * 1978-08-15 1980-02-20 Ciba-Geigy Ag Process for preparing granulates of plastics additives with a high melting point, especially of pigments, by thermic rotation granulation, and the granulates so obtained
US4564505A (en) * 1984-03-09 1986-01-14 Alfrey Norval K Process and apparatus for simultaneous material granulation and classification
WO2008040636A2 (en) * 2006-09-29 2008-04-10 Basf Se Process for the continuous granulation of fertilizers
JP4820799B2 (en) * 2007-10-30 2011-11-24 富士夫 堀 Container rotating granulator and granulation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7128936B1 (en) 2000-01-12 2006-10-31 Niro A/S Process and apparatus for agglomeration of powders

Also Published As

Publication number Publication date
FR2240758A1 (en) 1975-03-14
NO137274C (en) 1978-02-01
SE7311222L (en) 1975-02-18
FI229574A (en) 1975-02-18
NL7410275A (en) 1975-02-19
SE377768B (en) 1975-07-28
JPS5087968A (en) 1975-07-15
NO137274B (en) 1977-10-24
DE2436863A1 (en) 1975-02-20
DK412174A (en) 1975-04-21
NO742961L (en) 1975-03-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee