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1. (WO2014207123) METHOD FOR PREPARING PARTICLES OF ALKALI METAL BICARBONATE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/207123 International Application No.: PCT/EP2014/063558
Publication Date: 31.12.2014 International Filing Date: 26.06.2014
IPC:
C01D 7/24 (2006.01) ,C01D 7/00 (2006.01) ,C01D 7/40 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
D
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
7
Carbonates of sodium, potassium, or alkali metals in general
22
Purification
24
Crystallisation
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
D
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
7
Carbonates of sodium, potassium, or alkali metals in general
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
D
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
7
Carbonates of sodium, potassium, or alkali metals in general
38
Preparation in the form of granules, pieces, or other shaped products
40
Influencing the crystallisation process
Applicants:
SOLVAY SA [BE/BE]; Rue de Ransbeek, 310 B-1120 Bruxelles, BE
Inventors:
SAVARY, David Jean Lucien; FR
Agent:
TEIPEL, Stephan; DE
Priority Data:
135616026.06.2013FR
Title (EN) METHOD FOR PREPARING PARTICLES OF ALKALI METAL BICARBONATE
(FR) PROCEDE DE PREPARATION DE PARTICULES DE BICARBONATE DE METAL ALCALIN
Abstract:
(EN) The invention relates to a method for preparing particles of alkali metal bicarbonate by crystallization from a solution of alkali metal carbonate and/or bicarbonate in the presence of an additive in the solution, selected from the sulfates, sulfonates, the polysulfonates, the amines, the hydroxysultaines, the polycarboxylates, the polysaccharides, the polyethers and the ether-phenols, alkali metal hexametaphosphate, the phosphates such as the organophosphates or the phosphonates, the sulfosuccinates, the amidosulfonates, the aminosulfonates, preferably selected from: the phosphates, the organophosphates or the phosphonates, and such that the additive is present in the solution at a concentration of at least 1 ppm and preferably of at most 200 ppm.
(FR) Procédé de préparation par cristallisation de particules de bicarbonate de métal alcalin à partir d'une solution de carbonate et/ ou de bicarbonate de métal alcalin en présence d'un additif dans la solution, choisi parmi les sulfates, sulfonates, les polysulfonates, les amines, les hydroxysultaines, les polycarboxylates, les polysacharides, les polyethers et les éther-phénols, l'hexamétaphosphate de métal alcalin, les phosphates tels les organo-phosphates ou les phosphonates, les sulfosuccinates, les amidosulfonates, les sulfonates-amine, de préférence choisi parmi les: phosphates, les organo-phosphates ou les phosphonates, et tel que l'additif est présent dans la solution à une concentration d'au moins 1 ppm et préférentiellement d'au plus 200 ppm.
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, LT, 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, 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: French (FR)
Filing Language: French (FR)