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United States Patent | 6,027,799 |
Castle | February 22, 2000 |
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.
Inventors: | Castle; Richard B. (St. Paul, MN) |
Assignee: | Minnesota Mining and Manufacturing Company (St. Paul, MN) |
Appl. No.: | 552138 |
Filed: | November 2, 1995 |
Intern'l Class: | B32B 005/16 |
Field of Search: | 428/331,332,325,403,404,402,407 524/492,493,494 |
320578 | Nov., 1885 | Yates | 252/313. |
1175224 | Mar., 1916 | Bleecker. | |
1298540 | Mar., 1919 | Miller. | |
1995803 | Mar., 1935 | Gilbert. | |
2038251 | Apr., 1936 | Vogt. | |
2044680 | Jun., 1936 | Gilbert. | |
2676892 | Apr., 1954 | McLaughlin. | |
2883347 | Apr., 1959 | Fisher et al. | |
2978339 | Apr., 1961 | Veatch et al. | |
2978340 | Apr., 1961 | Veatch et al. | |
2987408 | Jun., 1961 | Minnick. | |
3015852 | Jan., 1962 | Hoffman et al. | |
3030215 | Apr., 1962 | Veatch et al. | |
3046607 | Jul., 1962 | Blaha. | |
3069292 | Dec., 1962 | Alexander et al. | |
3133821 | May., 1964 | Alford et al. | |
3151965 | Oct., 1964 | Patterson. | |
3190737 | Jun., 1965 | Schmidt. | |
3272615 | Sep., 1966 | Hoffman et al. | |
3290165 | Dec., 1966 | Iannicelli. | |
3365315 | Jan., 1968 | Beck et al. | |
3420645 | Jan., 1969 | Hair. | |
3493403 | Feb., 1970 | Tung et al. | |
3560186 | Feb., 1971 | Nylander. | |
3567680 | Mar., 1971 | Iannicelli. | |
3653865 | Apr., 1972 | Megles. | |
3661673 | May., 1972 | Merriam. | |
3679446 | Jul., 1972 | Kubo. | |
3773707 | Nov., 1973 | Hermann. | |
3834924 | Sep., 1974 | Grillo. | |
3836504 | Sep., 1974 | Morisawa. | |
3838998 | Oct., 1974 | Matthews et al. | |
3839253 | Oct., 1974 | Kershaw et al. | |
3920578 | Nov., 1975 | Yates. | |
3961978 | Jun., 1976 | Brodmann. | |
3980611 | Sep., 1976 | Anderson et al. | |
4042732 | Aug., 1977 | Ferrar. | |
4115256 | Sep., 1978 | de Zeeuw. | |
4147687 | Apr., 1979 | O'Donnell. | |
4201560 | May., 1980 | Dewitte et al. | |
4229329 | Oct., 1980 | Bennett. | |
4238430 | Dec., 1980 | Phillips. | |
4267089 | May., 1981 | Brown. | |
4268320 | May., 1981 | Klingaman et al. | |
4294750 | Oct., 1981 | Klingaman et al. | |
4298386 | Nov., 1981 | Kubo et al. | |
4446207 | May., 1984 | Dewitte et al. | |
4448599 | May., 1984 | Mackenzie et al. | |
4475936 | Oct., 1984 | Aston et al. | |
4477492 | Oct., 1984 | Bergna et al. | |
4487620 | Dec., 1984 | Neusy. | |
4661137 | Apr., 1987 | Garnier et al. | |
4668645 | May., 1987 | Khaund. | |
4693739 | Sep., 1987 | Manabe et al. | |
4715878 | Dec., 1987 | Kopatz et al. | |
4725390 | Feb., 1988 | Laird et al. | |
4751202 | Jun., 1988 | Toussaint et al. | |
4751203 | Jun., 1988 | Toussaint et al. | |
4756746 | Jul., 1988 | Kemo, Jr. et al. | |
4764218 | Aug., 1988 | Kobayashi et al. | |
4767726 | Aug., 1988 | Marshall. | |
4778502 | Oct., 1988 | Garnier et al. | |
4778515 | Oct., 1988 | Kemp, Jr. et al. | |
4904293 | Feb., 1990 | Garnier. | |
4923520 | May., 1990 | Anzai et al. | |
4957554 | Sep., 1990 | Mathers et al. | |
4961770 | Oct., 1990 | Johnson et al. | |
4983550 | Jan., 1991 | Goetz et al. | |
4994506 | Feb., 1991 | Anton et al. | |
5002696 | Mar., 1991 | White. | |
5017523 | May., 1991 | Kimura et al. | |
5063179 | Nov., 1991 | Menashi et al. | |
5069702 | Dec., 1991 | Block et al. | |
5143534 | Sep., 1992 | Kilner et al. | |
5217928 | Jun., 1993 | Goetz et al. | |
5256180 | Oct., 1993 | Garnier et al. | |
5326806 | Jul., 1994 | Yokoshima et al. | |
5340781 | Aug., 1994 | Oda et al. | |
5500287 | Mar., 1996 | Henderson. | |
5534348 | Jul., 1996 | Miller et al. | |
5559170 | Sep., 1996 | Castle. | |
5593467 | Jan., 1997 | Monroe. | |
Foreign Patent Documents | |||
875238 | Oct., 1979 | BE. | |
2421149 | Nov., 1979 | FR. | |
2529879 | Jan., 1984 | FR. | |
1 928 337 | Jan., 1970 | DE. | |
1 908 471 | Oct., 1970 | DE. | |
2912310A | Oct., 1979 | DE. | |
2 953 526 | Aug., 1984 | DE. | |
1207935 | Jan., 1989 | IT. | |
49-036929 | Oct., 1974 | JP. | |
56-108522A | Aug., 1981 | JP. | |
58-206663 | Dec., 1983 | JP. | |
59-189140 | Oct., 1984 | JP. | |
62-050839 | Mar., 1987 | JP. | |
2-59416 | Aug., 1988 | JP. | |
63-0303842 | Dec., 1988 | JP. | |
1036631 | Feb., 1989 | JP. | |
1294751 | Nov., 1989 | JP. | |
2118423 | May., 1990 | JP. | |
2-199013 | Aug., 1990 | JP. | |
4-126536 | Apr., 1992 | JP. | |
4-126537 | Apr., 1992 | JP. | |
4-126538 | Apr., 1992 | JP. | |
4-147923 | May., 1992 | JP. | |
5170986 | Jul., 1993 | JP. | |
08091874A | Apr., 1996 | JP. | |
353399 | Sep., 1972 | SU. | |
1654273 | Jun., 1991 | SU. | |
1654272 | Jun., 1991 | SU. | |
1 514 010 | Jun., 1978 | GB. | |
2 017 677B | Oct., 1979 | GB. | |
2 133 787A | Aug., 1984 | GB. | |
2177083A | Jan., 1987 | GB. | |
2 178 024B | Feb., 1987 | GB. | |
2248834B | Apr., 1992 | GB. | |
WO 95 29134A | Nov., 1995 | WO. |
American Geological Institute, Glossary of Geology, 4th printing, pp. 16, 447, 543 and 796, Falls Church, VA, 1977. American Petroleum Institute, Recommended Practices for Testing High Strength Proppants Used in Hydraulic Fracturing Operations, p. 12, Washington, D.C., 1989. Beck, W.R., Minnesota Mining & Manufacturing Co., Record of Invention No. 5, "Glass Beads from Crystals," dated Jun. 14, 1957, Dec. 18, 1957, and notarized Dec. 12, 1957. Bennett, H., F.A.I.C., Concise Chemical and Technical Dictionary, 3rd Edition, pp. 460, 1135-1136, Chemical Publishing Co., Inc., New York, N.Y., (1974). Budov et al, Glass and Ceramics, vol. 50, No. 7, pp. 275-279, XP00041844, "Glass Microbeads, Applications, Properties, and Technology," New York, N.Y., Jul. 1993. Harima Taikarenga K, (Nippon Steel Corp.), Computer Patent Abstract, EPO XP002022805 and JP 56 108 522, "Mfg. Power for Molten Spray Coating Systems,"published August 28, 1981 Chemical Abstracts, vol. 100, 1984, p. 302, 100:14402W, Expansion of Perlite, Stockman, Bernard, French Pat. 2,629,879, Jul. 12, 1982. 6001 Chemical Abstracts, Vo. 102 (1985) May, No. 20, Columbus, Ohio, USA, pp. 138-139. Deer, W.A. et al, An Introduction to the Rock-Forming Minerals, pp. 140-143, 282-338, 356-365, Longman Group Limited, London, 1975. Hurlbut, C.S., Dan's Manual of Minerology, 18th Ed., p. 460, John Wiley and Sons, Inc., New York, N.Y., 1971. Hutchison, C. S., Laboratory Handbook of Petrographic Techniques, pp. 1, 15-16, 44, 47, 73, 113, 132, 180, 235, 247, 264, 333, 354, 374, 414-425, 438, John Wiley & Sons, Inc., New York, N.Y., 1974. International Search Report, PCT/US95/04985, Aug. 2, 1995. Kadey, F. L., Jr., Industrial Minerals and Rocks, 5th Edition, vol. 2,, "Perlite," pp. 997-1010, Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., New York, NY, 1983. Katz, H.S. et al, Handbook of Fillers and Reinforcements for Plastics, Van Nostrand Reinhold Company, New York, N.Y. 1978, pp. 66-78, 127-135. Katz, H.S. et al, Handbook of Fillers and Reinforcements for Plastics, Van Nostrand Reinhold Company, New York, N.Y. 1987, pp. 441 and 450. Keith, M. L., Bulletin of the Geological Society of America, vol. 50, (12 part 1), pp. 1795-1826, Petrology of the Alkaline Intrusive at Blue Mountain (Dec. 1939). Lange, N. A., Handbook of Chemistry, "Properties of Minerals, Penfield's Scale of Fusibility," pp. 166-167, McGraw-Hill Book Company, New York, N.Y. 1956. Lefond, S. J., Industrial Minerals and Rocks, 5th Ed., vols. 1 and 2, Society of Mining Engineers, pp. 709-722, 931-960, 1383-1390, New York, N.Y., 1983. Plueddemann, E. P, Silane Coupling Agents, 2nd Ed., Plenum Press, 1991. Protasova et al, Glass and Ceramics, vol. 50, No. 7, pp. 342-344, XP00041852, "Use of Local Raw Material in the Glass Industry," New York, NY, Jul. 1993. Reed, R. J., North American Combustion Handbook, 2nd Ed., p. 432, North Anerican Mfg. Company, Cleveland, OH, 1978. Taggart, A.F., Handbook of Mineral Dressing, pp. 118-120, John W. Wiley and Sons, Inc., New York, N.Y. 1945. Zeelan Industries, Inc., "What to expect when you include ZEEOSPHERES.RTM. In Your Paints and Coatings.", St. Paul, Mn., 1989. |