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Pub. No.:    WO/2009/064991    International Application No.:    PCT/US2008/083565
Publication Date: 22.05.2009 International Filing Date: 14.11.2008
B02C 15/02 (2006.01)
Applicants: ALSTOM TECHNOLOGY LTD [CH/CH]; Brown Boveri Strasse 7 5400 Baden (CH) (For All Designated States Except US).
CHEN, Michael, M. [US/US]; (US) (For US Only)
Inventors: CHEN, Michael, M.; (US)
Agent: CRAWFORD, Robert, D.; ALSTOM Power Inc. 2000 Day Hill Road Windsor, Connecticut 06095 (US)
Priority Data:
11/939,621 14.11.2007 US
12/270,073 13.11.2008 US
Abstract: front page image
(EN)A roller mill 10 for pulverizing fine material has a grinding mechanism that includes a plurality of grinding rolls 64 and a grinding ring 66 that coact to pulverize material within a mill housing. The grinding ring has an inner grinding surface wherein the inner surface includes an upper vertical portion and inwardly sloped lower portion. The lower portion of the ring provides a means for retaining more fine particles on the ring during pulverizing, as well as an increase in grinding surface. The grinding rolls have a generally cylindrical shape with an outer grinding surface that includes an upper vertical portion and a lower portion of the outer grinding surface. The outer grinding surface of the roll is complementary to the inner grinding surface of the grinding ring.
(FR)Cette invention concerne un moulin à cylindres (10) pour pulvériser un matériau fin, lequel moulin comprend un mécanisme de broyage qui présente une pluralité de cylindres de broyage (64) et un concave (66) agissant ensemble pour pulvériser le matériau à l'intérieur du logement du moulin. Le concave comprend une surface de broyage intérieure laquelle présente une portion verticale supérieure et une portion inférieure inclinée vers l'intérieur. La portion inférieure du concave constitue un moyen permettant de retenir plus de particules fines sur le concave pendant le broyage; elle augmente également la surface de broyage. Les cylindres de broyage présentent une forme généralement cylindrique avec une surface de broyage extérieure qui présente une portion verticale supérieure et une portion inférieure de la surface de broyage extérieure. La surface de broyage extérieure du cylindre est complémentaire de la surface de broyage intérieure du concave.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)