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1. (WO2018104749) RELEASING IMPURITIES FROM A CALCIUM-BASED MINERAL
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Pub. No.: WO/2018/104749 International Application No.: PCT/GB2017/053697
Publication Date: 14.06.2018 International Filing Date: 08.12.2017
IPC:
C01F 11/46 (2006.01) ,C01F 11/18 (2006.01) ,C01C 1/24 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
11
Compounds of calcium, strontium, or barium
46
Sulfates
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
11
Compounds of calcium, strontium, or barium
18
Carbonates
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
C
AMMONIA; CYANOGEN; COMPOUNDS THEREOF
1
Ammonia; Compounds thereof
24
Sulfates of ammonium
Applicants:
CARBON CYCLE LIMITED [GB/GB]; 248 Sutton Common Road Sutton Surrey SM3 9PW, GB
Inventors:
MIRZA, Waqas; GB
FLORENCE, Stephen; GB
THAXTER, Ian; GB
SEVIER, David; GB
Agent:
SLINGSBY PARTNERS LLP; 1 Kingsway London Greater London WC2B 6AN, GB
Priority Data:
1621017.109.12.2016GB
1714927.915.09.2017GB
Title (EN) RELEASING IMPURITIES FROM A CALCIUM-BASED MINERAL
(FR) LIBÉRATION D'IMPURETÉS À PARTIR D'UN MINÉRAL À BASE DE CALCIUM
Abstract:
(EN) A method for releasing impurities from a calcium-based mineral is described. The method comprises reacting a calcium-based mineral containing impurities with an aqueous solution of one or more ionic salts at a temperature of approximately 85°C or above, wherein at least one of the calcium-based mineral and the one or more ionic salts comprises sulphate and at least one of the calcium-based mineral and the one or more ionic salts comprises ammonium, and wherein the concentration of the solution is approximately 25% or higher mass fraction, such that double salt crystals are formed and impurities are released. The method further comprises separating the double salt crystals from the impurities. Various products of the process are also described.
(FR) L'invention concerne une méthode de libération d'impuretés à partir d'un minéral à base de calcium. Le procédé comprend la réaction d'un minéral à base de calcium contenant des impuretés avec une solution aqueuse d'un ou plusieurs sels ioniques à une température d'environ 85°C ou plus, au moins l'un du minéral à base de calcium et du ou des sels ioniques comprenant du sulfate et au moins l'un du minéral à base de calcium et du ou des sels ioniques comprenant de l'ammonium, et la concentration de la solution étant d'environ 25 % ou plus de fraction de masse, de telle sorte que des cristaux de sel double sont formés et des impuretés sont libérées. Le procédé comprend en outre la séparation des cristaux de sel double des impuretés. Divers produits du procédé sont également décrits.
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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, JO, 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)