CA2120618A1 - Apparatus and Process for Coating Particles - Google Patents

Apparatus and Process for Coating Particles

Info

Publication number
CA2120618A1
CA2120618A1 CA 2120618 CA2120618A CA2120618A1 CA 2120618 A1 CA2120618 A1 CA 2120618A1 CA 2120618 CA2120618 CA 2120618 CA 2120618 A CA2120618 A CA 2120618A CA 2120618 A1 CA2120618 A1 CA 2120618A1
Authority
CA
Canada
Prior art keywords
coating
relative humidity
coated particles
fertilizer
polymer coated
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.)
Granted
Application number
CA 2120618
Other languages
French (fr)
Other versions
CA2120618C (en
Inventor
Arthur Ray Shirley Jr.
Keith D. Cochran
Russell Ian Derrah
Sayeeda Jabeen Quadir
Zdislaw M. Tulimowski
Terence B. Lynch
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.)
Royster Clark Agribusiness Inc
Original Assignee
Imc Agribusiness Inc.
Arthur Ray Shirley Jr.
Keith D. Cochran
Russell Ian Derrah
Sayeeda Jabeen Quadir
Zdislaw M. Tulimowski
Terence B. Lynch
Ici Canada Inc.
Royster-Clark Agribusiness, Inc.
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 Imc Agribusiness Inc., Arthur Ray Shirley Jr., Keith D. Cochran, Russell Ian Derrah, Sayeeda Jabeen Quadir, Zdislaw M. Tulimowski, Terence B. Lynch, Ici Canada Inc., Royster-Clark Agribusiness, Inc. filed Critical Imc Agribusiness Inc.
Publication of CA2120618A1 publication Critical patent/CA2120618A1/en
Application granted granted Critical
Publication of CA2120618C publication Critical patent/CA2120618C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques
    • 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
    • B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
    • 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
    • C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/05—Fluidized bed

Abstract

An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated. The apparatus and process provides a method to prepare coated particles having a narrow coating weight distribution, and thus allows for the economical production of a slow release fertilizer.
CA002120618A 1991-10-09 1992-10-09 Apparatus and process for coating particles Expired - Fee Related CA2120618C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/773,273 1991-10-09
US07/773,273 US5211985A (en) 1991-10-09 1991-10-09 Multi-stage process for continuous coating of fertilizer particles

Publications (2)

Publication Number Publication Date
CA2120618A1 true CA2120618A1 (en) 1993-04-15
CA2120618C CA2120618C (en) 1999-04-20

Family

ID=25097720

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002120618A Expired - Fee Related CA2120618C (en) 1991-10-09 1992-10-09 Apparatus and process for coating particles

Country Status (15)

Country Link
US (3) US5211985A (en)
EP (1) EP0607363B1 (en)
JP (1) JPH07500079A (en)
KR (1) KR100255492B1 (en)
AU (1) AU663118B2 (en)
BR (1) BR9206617A (en)
CA (1) CA2120618C (en)
DE (1) DE69221630T2 (en)
ES (1) ES2108267T3 (en)
IL (1) IL103391A (en)
MX (1) MX9205839A (en)
NO (1) NO300311B1 (en)
NZ (1) NZ244679A (en)
WO (1) WO1993006941A1 (en)
ZA (1) ZA927758B (en)

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BR9206617A (en) 1995-11-14
IL103391A0 (en) 1993-03-15
NO941283L (en) 1994-06-08
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AU663118B2 (en) 1995-09-28
KR100255492B1 (en) 2000-05-01
ZA927758B (en) 1993-04-19
NO300311B1 (en) 1997-05-12
JPH07500079A (en) 1995-01-05
DE69221630D1 (en) 1997-09-18
NZ244679A (en) 1995-09-26
US5395449A (en) 1995-03-07
NO941283D0 (en) 1994-04-08
EP0607363A1 (en) 1994-07-27
US5399186A (en) 1995-03-21
MX9205839A (en) 1993-04-01
WO1993006941A1 (en) 1993-04-15
IL103391A (en) 1995-12-08
KR940702771A (en) 1994-09-17
AU2696592A (en) 1993-05-03
CA2120618C (en) 1999-04-20
US5211985A (en) 1993-05-18
DE69221630T2 (en) 1998-01-08

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