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1. (WO1997016385) AT LEAST PARTLY FUSED PARTICULATES AND METHODS OF MAKING THEM BY FLAME FUSION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016385 International Application No.: PCT/US1996/016967
Publication Date: 09.05.1997 International Filing Date: 31.10.1996
Chapter 2 Demand Filed: 02.06.1997
IPC:
B01J 2/16 (2006.01) ,B01J 6/00 (2006.01) ,B01J 8/18 (2006.01) ,C03B 19/10 (2006.01) ,C03C 12/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2
Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
16
by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
6
Calcining; Fusing
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
18
with fluidised particles
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
19
Other methods of shaping glass
10
Forming beads
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
12
Powdered glass; Bead compositions
Applicants:
MINNESOTA MINING AND MANUFACTURING COMPANY [US/US]; 3M Center P.O. Box 33427 Saint Paul, MN 55133-3427, US (AllExceptUS)
CASTLE, Richard, B. [US/US]; US (UsOnly)
Inventors:
CASTLE, Richard, B.; US
Agent:
PRIDDY, Robert, R.; Pollock, Vande Sande & Priddy Suite 800 1990 M Street, N.W. Washington, DC 20036-3425, US
VOSSIUS & PARTNER; Patentanwalte P.O. Box 86 07 67 D-81634 München, DE
Priority Data:
08/552,13802.11.1995US
60/007,19501.11.1995US
PCT/US96/1514820.09.1996CA
Title (EN) AT LEAST PARTLY FUSED PARTICULATES AND METHODS OF MAKING THEM BY FLAME FUSION
(FR) MATERIAUX PARTICULAIRES AU MOINS PARTIELLEMENT FONDUS ET PROCEDES DE FABRICATION DESDITS MATERIAUX PAR DOUBLAGE A LA FLAMME
Abstract:
(EN) The disclosure describes methods for producing bulk, particulate material that includes solid, generally ellipsoidal particles. Irregularly shaped feed particles with average particle sizes of up to 25 microns on a volume basis are dispersed in at least a portion of a combustible gas mixture by application of force and/or fluidizing agents. The combustible mixture with particles in suspension is then delivered, while controlling agglomeration or re-agglomeration of the particles, to at least one flame front. There, the mixture and suspended particles are uniformly distributed across the surface(s) of and passed through the flame front(s) with a high concentration of particles in the mixture. This flame front and the resultant flame(s) with suspended particles are located in at least one 'wall free' zone. In such zone(s) the flame(s) may expand while the particles are maintained in dispersion and heated, with controlled and highly efficient application of heating energy. At least partial fusion occurs within at least the surfaces of the particles at high thermal efficiencies, while agglomeration of particles during fusion is inhibited.
(FR) 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.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19981929MXPA/a/1998/003458EP0858435CN1201444CA2236447KR1019990067324
AU1996077185