Patent AU-2013202318-B2 (AU)
Title: Processes for treating red mud
Inventor: BOUDREAULT RICHARD
IPC: C22B3/00
Filed: 2013-01-10
Granted: 2015-11-05
Abstract: (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 2013/104059 A1 18 July 2013 (18.07.2013) W I PO I P CT (51) International Patent Classification: (74) Agent: BERESKIN & PARR LLP/S.E.N.C.R.L., S.R.L.; C22B 3/10 (2006.01) C01G 23/04 (2006.01) 40th Floor, 40 King Street West, Scotia Plaza, Toronto, C01B 13/18 (2006.01) CO1G 49/00 (2006.01) Ontario M5H 3Y2 (CA). COF 7/00 (2006.01) C22B 3/46 (2006.01) (81) Designated States (unless otherwise indicated, for every COF 7/02 (2006.01) C22B 21/100 (2006.01) kind of national protection available): AE, AG, AL, AM, C01G 3 (2006.0 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, (21) International Application Number: DO, DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, PCT/CA2013/000021 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, (22) International Filing Date: ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, 10 January 2013 (10.01.2013) NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, (25) Filing Language: English RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, (26) Publication Language: English ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 61/584,993 10 January 2012 (10.01.2012) US kind of regional protection available): ARIPO (BW, GH, 61/706,074 26 September 2012 (26.09.2012) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, 61/713,719 15 October 2012 (15.10.2012) US UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (71) Applicant: ORBITE ALUMINAE INC. [CA/CA]; 6505 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, route Transcanadienne, Bureau 610, Saint-Laurent, Quebec EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, H4T IS3 (CA). MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, (72) Inventors: BOUDREAULT, Richard; 2723 Luce-Guil- ML, MR, NE, SN, TD, TG). beault, Saint-Laurent, Quebec H4R 2T3 (CA). FOURNI ER, Joel; 1761 des Amarantes, Carignan, Qubec J3L 4Z8 Published: (CA). PRIMEAU, Denis; 2166 Place de l'Eglise, Ste-Julie, with international search report (Art. 21(3)) Quebec J3E 2G5 (CA). LABRECQUE-GILBERT, Mar ie-Maxime; 4599 Beauchesne, Laval, Quebec H7T 2T6 (CA). (54) Title: PROCESSES FOR TREATING RED MUD ,-111iasil Mept Mieta Mgor Acon nr Ca2SO4-2H Non Hydro Asable (Acid Recovery) 102, | -105 -108 tmrising 104 P ducion and Rare Earths 103 ~~Aluminum ChlorideAcdR ovr Ch or s S Crystallization 7 e0 nd WahingAcid Purification 106 Aluminum Chlor e Almia AlO3 (57) Abstract: There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with CHCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO2 , SiO2 etc.