| 摘要 |
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date W O 2012/021342 A3 16 February 2012 (16.02.2012) W I P0 I P CT (51) International Patent Classification: DZ, EC, FE, FG, ES, Fl, GB, GD, GE, GH, GM, GT, HN, CO1F 7/06 (2006.01) BO1D 21/01 (2006.01) HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, COlF 7/47(2006.01) KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (21) International Application Number: OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, SC, SD, SE, PCT/US201 1/046352 SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, (22) International Filing Date: TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 3 August 2011 (03.08.2011) (84) Designated States (unless otherwise indicated, for every (25) Filing Language: English kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, (26) Publication Language: English ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, (30) Priority Data: TM), European (AL, AT, BE, HG, CII, CY, CZ, DE, DK, 12/852 917 9 August 2010 (09.08.2010) US EL, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (71) Applicant (for all designated States except US): NALCO TR), OAPI (BE, BJ, CF, CG, Cl, CM, GA, GN, GQ, GW, COMPANY [US/US]; 1601 W. Diehli Road, Naperville, ML, MR, NE, SN, TD, TG). Illinois 60563-1198 (US). Declarations under Rule 4.17: Appicsan ts (for USonlas to applicant's entitlement to apply for and be granted a (75) Inventors/Applicants (for US only): CHESTER, Ryan patent (Rule 4.1 7(ii)) Travis [AU/AU]; 46 King Edward Drive, Heathridge, Western Australia 6027 (AU). KILDEA, John D. - as to the applicant's entitlement to claim the priority of the [AU/AU]; 8 Loxley Place, Baldivis, Western Australia earlier application (Rule 4.17(iii)) 6171 (AU). WANG, Jing [CN/US]; 2974 Savannah Drive, - of inventorship (Rule 4.17(iv)) Aurora, Illinois 60502 (US). BODE, Heinrich E. [DE/US]; 1130 Hull Court, Aurora, Illinois 60504 (US). Published: LI, Xiaojin Harry [US/US]; 1771 Dyer Drive, Bartlett, - with international search report (Art. 21(3)) Illinois 60103 (US). - before the expiration of the time limit for amending the (74) Agents: BISHOP, Joshua D. et al.; 1601 W. Diehl Road, claims and to be republished in the event of receipt of Napperville, Illinois 60563 (US). amendments (Rule 48.2(h)) (81) Designated States (unless otherwise indicated, for every (88) Date of publication of the international search report: kind of national protection available): AE, AG, AL, AM, 7 June 2012 AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, (54) Title: THE RECOVERY OF ALUMINA TRIHYDRATE DURING THE BAYER PROCESS USING SCLEROGLUCAN (57) Abstract: The invention provides methods and compositions for improving the production of alumina. The invention involves Nq adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scleroglucan. The use of scleroglucan can impart a number of advantages including at least some of greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer pro ces s. |
