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1. (WO2019067433) METHODS AND COMPOSITIONS FOR BAUXITE BENEFICIATION
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Pub. No.: WO/2019/067433 International Application No.: PCT/US2018/052616
Publication Date: 04.04.2019 International Filing Date: 25.09.2018
IPC:
C01F 7/06 (2006.01) ,C22B 1/00 (2006.01) ,C22B 21/00 (2006.01) ,B03D 1/14 (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
7
Compounds of aluminium
02
Aluminium oxide; Aluminium hydroxide; Aluminates
04
Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
06
by treating aluminous minerals with alkali hydroxide
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
1
Preliminary treatment of ores or scrap
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
21
Obtaining aluminium
B PERFORMING OPERATIONS; TRANSPORTING
03
SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
D
FLOTATION; DIFFERENTIAL SEDIMENTATION
1
Flotation
14
Flotation machines
Applicants:
ECOLAB USA INC. [US/US]; 1 Ecolab Place St. Paul, Minnesota 55102, US
Inventors:
LAROSA, Michael Ignazio; US
GREULICH, Christopher Ryan; US
STROMINGER, Michael G.; US
Agent:
SARAGENO, Lori P.; US
BERGER, Scott A.; US
BINDER, Mark, W.; US
BJORKMAN, Dale, A.; US
BUSSE, Paul W.; US
DAHL, Philip, Y.; US
HAKAMAKI, Michaele, A.; US
HARTMAN, Lindsay M.; US
JIMENEZ, Jose, W.; US
KAGAN, David, B.; US
PARINS, Paul J.; US
SCHULTE, Daniel, C.; US
WARNER, Elizabeth, A.; US
WEAVER, Paul, L.; US
Priority Data:
62/563,32826.09.2017US
62/735,54324.09.2018US
Title (EN) METHODS AND COMPOSITIONS FOR BAUXITE BENEFICIATION
(FR) MÉTHODES ET COMPOSITIONS POUR L'ENRICHISSEMENT DU BAUXITE
Abstract:
(EN) Disclosed herein are methods and compositions for increasing the alumina content of a bauxite ore prior to alumina extraction by an extractive process, such as the Bayer process. By adding a beneficiation agent to an aqueous ore slurry, then applying a gravitational force to separate, or partition, the slurry into a beneficiary and a gangue, a number of quantifiable benefits are observed. These include increased alumina content and reduced silica content in the beneficiary solids as compared to the starting ore. These benefits are in excess of those observed by pre-extraction gravitational separation of ore slurries without the addition of a beneficiation agent. Beneficiation agents include DADMAC polymers, and combinations of DADMAC polymers with dextrans. The beneficiary is collected and applied to an extractive process, such as the Bayer process.
(FR) L'invention concerne des procédés et des compositions pour augmenter la teneur en alumine d'un minerai de bauxite avant l'extraction d'alumine par un procédé d'extraction, tel que le procédé Bayer. Par l'addition d'un agent d'enrichissement à une boue de minerai aqueuse, puis par l'application d'une force gravitationnelle pour séparer, ou diviser, la boue en un bénéficiaire et en une gangue, un certain nombre d'avantages quantifiables sont observés. Ceux-ci comprennent une teneur accrue en alumine et une teneur réduite en silice dans les solides bénéficiaires par rapport au minerai de départ. Ces avantages dépassent ceux observés par séparation gravitationnelle pré-extraction de boues de minerai sans addition d'un agent d'enrichissement. Les agents d'enrichissement comprennent des polymères DADMAC et des combinaisons de polymères DADMAC avec des dextranes. Le bénéficiaire est collecté et soumis à un procédé d'extraction, tel que le procédé Bayer.
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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)