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1. (WO2017151882) SULFIDE RECYCLING IN MANGANESE PRODUCTION
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Pub. No.: WO/2017/151882 International Application No.: PCT/US2017/020390
Publication Date: 08.09.2017 International Filing Date: 02.03.2017
IPC:
C25B 15/08 (2006.01) ,C25C 3/30 (2006.01) ,C25C 7/06 (2006.01) ,C25B 1/21 (2006.01)
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
B
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
15
Operating or servicing of cells
08
Supplying or removing reactants or electrolytes; Regeneration of electrolytes
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
3
Electrolytic production, recovery or refining of metals by electrolysis of melts
30
of manganese
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
7
Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
06
Operating or servicing
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
B
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1
Electrolytic production of inorganic compounds or non-metals
21
of manganese oxides
Applicants:
KASAAIAN, Arash [US/US]; US
Inventors:
KASAAIAN, Arash; US
Agent:
MILLER, Martin; US
Priority Data:
62/302,64802.03.2016US
Title (EN) SULFIDE RECYCLING IN MANGANESE PRODUCTION
(FR) RECYCLAGE DE SULFURE DANS LA PRODUCTION DE MANGANÈSE
Abstract:
(EN) A method of producing manganese metal or EMD by leaching a source of manganese with a solution comprising sulfuric acid to form a leach solution, adding one or more sulfides generated in a sulfide recycle stage to the leach solution in order to form sulfide precipitates comprising heavy metal sulfides, removing the sulfide precipitates from the leach solution, feeding the leach solution to one or more electrolytic cells, subjecting the purified leach solution to electrolysis so as to deposit manganese metal or EMD, reacting the sulfide precipitates with an acid to generate H2S, reacting the H2S with a hydroxide solution or an Mn2+ solution in order to produce one or more sulfides for recycle and precipitating heavy metal sulfides.
(FR) La présente invention concerne un procédé de production de manganèse métallique ou de dioxyde de manganèse électrolytique (EMD) par lixiviation d’une source de manganèse avec une solution comprenant de l’acide sulfurique pour former une solution de lixiviation, ajout d’un ou plusieurs sulfures générés dans une étape de recyclage de sulfure à la solution de lixiviation afin de former des précipités de sulfure comprenant des sulfures de métaux lourds, élimination des précipités de sulfure de cette solution de lixiviation, introduction de la solution de lixiviation dans une ou plusieurs cellules électrolytiques, soumission de la solution de lixiviation purifiée à électrolyse de façon à déposer le manganèse métallique ou l’EMD, réaction des précipités de sulfure avec un acide pour générer H2S, réaction du H2S avec une solution d’hydroxyde ou une solution de Mn2+ afin de produire un ou plusieurs sulfures pour recycler et précipiter les sulfures de métaux lourds.
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, DJ, 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, KH, KN, KP, KR, KW, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)