WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2016178073) METHOD FOR THE TREATMENT OF IRON-CONTAINING SLUDGE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2016/178073    International Application No.:    PCT/IB2016/000578
Publication Date: 10.11.2016 International Filing Date: 04.05.2016
IPC:
C22B 7/00 (2006.01), C22B 13/00 (2006.01), C22B 3/00 (2006.01)
Applicants: ARCELORMITTAL [LU/LU]; 24-26, Boulevard d'Avranches 1160 Luxembourg (LU)
Inventors: GIORDANA, Séverine; (FR)
Agent: PLAISANT, Sophie; ArcelorMittal France - Research&Development Intellectual Property 6 rue André Campra - Immeuble Le Cézanne 93200 Saint-Denis (FR)
Priority Data:
PCT/IB2015/000617 05.05.2015 IB
Title (EN) METHOD FOR THE TREATMENT OF IRON-CONTAINING SLUDGE
(FR) PROCÉDÉ POUR LE TRAITEMENT DE BOUES CONTENANT DU FER, ET ÉQUIPEMENT ASSOCIÉ
Abstract: front page image
(EN)The invention is related to a method for the treatment of sludge containing iron and between 4.5% to 12% by weight of zinc. This method includes a leaching step wherein leaching agents include hydrochloric acid and chlorate, and wherein the pH of the leachate directly resulting from this leaching step is set at a value strictly below 1.5. Recycling method and treatment installation associated.
(FR)Cette invention concerne un procédé de traitement de boues contenant du fer et de 4,5 % à 12 % en poids de zinc. Ce procédé comprend une étape de lixiviation, des agents de lixiviation comprenant de l'acide chlorhydrique et du chlorate, et le pH du lixiviat résultant directement de cette étape de lixiviation étant fixé à une valeur strictement inférieure à 1,5. L'invention concerne également un procédé de recyclage et une installation de traitement associée.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, 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, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)