CA2236447C - Materiaux particulaires au moins partiellement fondus et procedes de fabrication desdits materiaux par doublage a la flamme - Google Patents

Materiaux particulaires au moins partiellement fondus et procedes de fabrication desdits materiaux par doublage a la flamme Download PDF

Info

Publication number
CA2236447C
CA2236447C CA002236447A CA2236447A CA2236447C CA 2236447 C CA2236447 C CA 2236447C CA 002236447 A CA002236447 A CA 002236447A CA 2236447 A CA2236447 A CA 2236447A CA 2236447 C CA2236447 C CA 2236447C
Authority
CA
Canada
Prior art keywords
particles
feed
volume
product
mixture
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 - Fee Related
Application number
CA002236447A
Other languages
English (en)
Other versions
CA2236447A1 (fr
Inventor
Richard B. Castle
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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
Priority claimed from PCT/US1996/015148 external-priority patent/WO1997016384A1/fr
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of CA2236447A1 publication Critical patent/CA2236447A1/fr
Application granted granted Critical
Publication of CA2236447C publication Critical patent/CA2236447C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B01J2/16—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
    • B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
    • B01J6/005—Fusing
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1005—Forming solid beads
    • C03B19/102—Forming solid beads by blowing a gas onto a stream of molten glass or onto particulate materials, e.g. pulverising
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C12/00—Powdered glass; Bead compositions
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Glanulating (AREA)

Abstract

L'invention concerne des procédés permettant de produire un matériau particulaire en vrac comprenant des particules solides généralement ellipsoïdales. On disperse des particules de départ de forme irrégulière, dont les dimensions moyennes vont jusqu'à 25 microns en volume, dans au moins une partie d'un mélange de gaz combustibles en leur appliquant une force et/ou des agents de fluidisation. On amène ensuite le mélange combustible qui contient les particules en suspension, tout en empêchant l'agglomération ou la ré-agglomération des particules, à au moins un front de flamme. A ce niveau, on distribue uniformément le mélange et les particules en suspension sur au moins une surface d'au moins un front de flamme et on leur fait traverser celui-ci, la concentration des particules dans le mélange étant élevée. Ce front de flamme et la ou les flammes qui en résultent, avec les particules en suspension, sont situés dans au moins une zone "sans paroi". Dans ce type de zone, la ou les flammes peuvent se propager pendant qu'on maintient les particules en dispersion et qu'on les chauffe, en fournissant l'énergie thermique de manière contrôlée et très efficace. Une fusion au moins partielle se produit au moins au niveau de la surface des particules, avec des rendements thermiques élevés, tandis qu'on empêche l'agglomération des particules.
CA002236447A 1995-11-01 1996-10-31 Materiaux particulaires au moins partiellement fondus et procedes de fabrication desdits materiaux par doublage a la flamme Expired - Fee Related CA2236447C (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US719595P 1995-11-01 1995-11-01
US60/007195 1995-11-01
US55213895A 1995-11-02 1995-11-02
US08/552138 1995-11-02
USPCT/US96/15148 1996-09-18
PCT/US1996/015148 WO1997016384A1 (fr) 1995-11-01 1996-09-20 Procede de fabrication de matieres particulaires fusionnees par doublage a la flamme
PCT/US1996/016967 WO1997016385A1 (fr) 1995-11-01 1996-10-31 Materiaux particulaires au moins partiellement fondus et procedes de fabrication desdits materiaux par doublage a la flamme

Publications (2)

Publication Number Publication Date
CA2236447A1 CA2236447A1 (fr) 1997-05-09
CA2236447C true CA2236447C (fr) 2007-07-03

Family

ID=38279330

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002236447A Expired - Fee Related CA2236447C (fr) 1995-11-01 1996-10-31 Materiaux particulaires au moins partiellement fondus et procedes de fabrication desdits materiaux par doublage a la flamme

Country Status (1)

Country Link
CA (1) CA2236447C (fr)

Also Published As

Publication number Publication date
CA2236447A1 (fr) 1997-05-09

Similar Documents

Publication Publication Date Title
US6045913A (en) At least partly fused particulates and methods of making them by flame fusion
US6254981B1 (en) Fused glassy particulates obtained by flame fusion
US5883029A (en) Compositions comprising fused particulates and methods of making them
EP0858434B1 (fr) Procede de fabrication de matieres particulaires fusionnees par doublage a la flamme
US5849055A (en) Process for producing inorganic microspheres
JP5731537B2 (ja) 中空微小球を作製するための方法
JP5824069B2 (ja) 中空微小球及び中空微小球を作製する方法
JPH11501610A (ja) 溶融材料の急冷
WO2011084572A2 (fr) Microsphères creuses
US3341314A (en) Glass bead making apparatus
CA2236447C (fr) Materiaux particulaires au moins partiellement fondus et procedes de fabrication desdits materiaux par doublage a la flamme
AU718188C (en) At least partly fused particulates and methods of making them by flame fusion
JP5036984B2 (ja) 球状無機質微粉末の製造方法
MXPA98003458A (en) Particular fused at least partially, and methods to manufacture them by fusion to the fl
JPH11514626A (ja) 少なくとも部分的に融解された粒子および火炎融解によるそれらの製法
MXPA98003454A (en) Methods to manufacture particulates fused by porfusion to the fl
JP2004051409A (ja) 球状無機質超微粉末の製造方法
JP4230554B2 (ja) 球状粒子の製造方法
JP2021532048A (ja) 中空球状ガラス粒子
Lohner et al. Melt atomization by heated gases

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed