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1. (WO1997017293) REDUCTION OF IMPURITIES IN BAYER PROCESS ALUMINA TRIHYDRATE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017293 International Application No.: PCT/US1996/017363
Publication Date: 15.05.1997 International Filing Date: 29.10.1996
Chapter 2 Demand Filed: 20.05.1997
IPC:
C01F 7/14 (2006.01) ,C01F 7/46 (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
14
Aluminium oxide or hydroxide from alkali metal aluminates
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
46
Purification of aluminium oxide, aluminium hydroxide or aluminates
Applicants:
CYTEC TECHNOLOGY CORP. [US/US]; Suite 952 1105 North Market Street Wilmington, DE 19801, US (AllExceptUS)
ROTHENBERG, Alan, S. [US/US]; US (UsOnly)
FLIEG, Greg [US/US]; US (UsOnly)
COLE, Robert, W. [US/US]; US (UsOnly)
Inventors:
ROTHENBERG, Alan, S.; US
FLIEG, Greg; US
COLE, Robert, W.; US
Agent:
SCHULTZ, Claire, M.; Cytec Industries Inc. 1937 West Main Street P.O. Box 60 Stamford, CT 06904-0060, US
Priority Data:
60/006,25407.11.1995US
Title (EN) REDUCTION OF IMPURITIES IN BAYER PROCESS ALUMINA TRIHYDRATE
(FR) REDUCTION DES IMPURETES DANS LE TRIHYDRATE D'ALUMINE PRODUIT PAR PROCEDE BAYER
Abstract:
(EN) Processes for reducing the level of impurities in alumina trihydrate produced in the Bayer process are disclosed, wherein alumina trihydrate-containing process streams are flocculated with hydroxamated polymers and centrifuged.
(FR) L'invention porte sur un procédé de réduction du niveau d'impuretés dans du trihydrate d'alumine produit selon le procédé Bayer dans lequel les courants de processus contenant le trihydrate d'alumine sont floculés à l'aide de polymères hydroxamatés puis centrifugés.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0859745CN1201440CA2234765AU1996074828