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1. WO2020068721 - METHODS AND COMPOSITIONS FOR PRE-EXTRACTIVE BENEFICIATION OF ORES

Publication Number WO/2020/068721
Publication Date 02.04.2020
International Application No. PCT/US2019/052554
International Filing Date 24.09.2019
IPC
C01F 7/06 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
7Compounds of aluminium
02Aluminium oxide; Aluminium hydroxide; Aluminates
04Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
06by treating aluminous minerals with alkali hydroxide
C22B 1/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
1Preliminary treatment of ores or scrap
B03D 1/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
14Flotation machines
B03D 1/004 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
001Flotation agents
004Organic compounds
CPC
B03D 1/016
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
001Flotation agents
004Organic compounds
016Macromolecular compounds
B03D 1/02
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
02Froth-flotation processes
B03D 1/1418
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
14Flotation machines
1418using centrifugal forces
B03D 2201/02
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
DFLOTATION; DIFFERENTIAL SEDIMENTATION
2201Specified effects produced by the flotation agents
02Collectors
C22B 1/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
1Preliminary treatment of ores or scrap
Applicants
  • ECOLAB USA INC. [US]/[US]
Inventors
  • GREULICH, Christopher Ryan
  • LAROSA, Michael Ignazio
  • DAVIS, Ronald Verne
Agents
  • SARAGENO, Lori, P.
  • HAKAMAKI, Michaele, A.
  • BINDER, Mark, W.
  • BJORKMAN, Dale, A.
  • BUSSE, Paul W.
  • BERGER, Scott, A.,
  • KAGAN, David, B.
  • DAHL, Philip, Y.,
  • D'SOUZA, Tanya S.
  • PARINS, Paul J.
  • SCHULTE, Daniel, C.
  • WARNER, Elizabeth, A.,
  • WEAVER, Paul, L.
Priority Data
62/735,54324.09.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS AND COMPOSITIONS FOR PRE-EXTRACTIVE BENEFICIATION OF ORES
(FR) MÉTHODES ET COMPOSITIONS POUR L'ENRICHISSEMENT PRÉ-EXTRACTIF DES MINERAIS
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 produit enrichi 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 enrichis 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 produit enrichi est collecté et soumis à un procédé d'extraction, tel que le procédé Bayer.
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