Processing

Please wait...

Settings

Settings

Goto Application

1. WO1996019840 - PROCESS FOR RECOVERY OF METALS FROM USED NICKEL-METAL HYDRIDE ACCUMULATORS

Publication Number WO/1996/019840
Publication Date 27.06.1996
International Application No. PCT/EP1995/004735
International Filing Date 01.12.1995
Chapter 2 Demand Filed 20.05.1996
IPC
C22B 3/26 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
3Extraction of metal compounds from ores or concentrates by wet processes
20Treatment or purification of solutions, e.g. obtained by leaching
26by liquid-liquid extraction using organic compounds
C22B 3/38 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
3Extraction of metal compounds from ores or concentrates by wet processes
20Treatment or purification of solutions, e.g. obtained by leaching
26by liquid-liquid extraction using organic compounds
38containing phosphorus
C22B 3/40 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
3Extraction of metal compounds from ores or concentrates by wet processes
20Treatment or purification of solutions, e.g. obtained by leaching
26by liquid-liquid extraction using organic compounds
40Mixtures
C22B 3/44 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
3Extraction of metal compounds from ores or concentrates by wet processes
20Treatment or purification of solutions, e.g. obtained by leaching
44by chemical processes
C22B 7/00 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
7Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
H01M 10/54 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
54Reclaiming serviceable parts of waste accumulators
CPC
C22B 23/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
23Obtaining nickel or cobalt
04by wet processes
C22B 3/0005
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
3Extraction of metal compounds from ores or concentrates by wet processes
0004Treatment or purification of solutions, e.g. obtained by leaching
0005by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like
C22B 3/0068
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
3Extraction of metal compounds from ores or concentrates by wet processes
0004Treatment or purification of solutions, e.g. obtained by leaching
0005by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like
004using organo-metallic compounds or organo compounds of boron, silicon, phosphorus, selenium or tellurim
0041using organo-metallic compounds of a single type
0043using phosphorus-based acid derivatives
0044of a single type
0045Acyclic compounds
0063Mononuclear oxyacids of pentavalent phosphorus or their esters(-ate)
0068Phosphoric ((O)P(OH)3) type
C22B 3/0095
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
3Extraction of metal compounds from ores or concentrates by wet processes
0004Treatment or purification of solutions, e.g. obtained by leaching
0005by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like
004using organo-metallic compounds or organo compounds of boron, silicon, phosphorus, selenium or tellurim
0095using a mixture of organic agents wherein one agent at least is an organo-metallic compound
C22B 3/44
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
3Extraction of metal compounds from ores or concentrates by wet processes
20Treatment or purification of solutions, e.g. obtained by leaching
44by chemical processes
C22B 7/007
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
7Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; ; Methods of a general interest or applied to the winning of more than two metals
006Wet processes
007by acid leaching
Applicants
  • VARTA BATTERIE AKTIENGESELLSCHAFT [DE]/[DE] (AT, BE, CA, CH, CN, DE, DK, ES, FR, GB, GR, IE, IT, JP, LU, MC, NL, PT, SE, SG)
  • TREIBACHER, Auermet [AT]/[AT] (AT, BE, CA, CH, CN, DE, DK, ES, FR, GB, GR, IE, IT, JP, LU, MC, NL, PT, SE, SG)
  • KLEINSORGEN, Klaus [DE]/[DE] (UsOnly)
  • KÖHLER, Uwe [DE]/[DE] (UsOnly)
  • BOUVIER, Alexander [AT]/[AT] (UsOnly)
  • FÖLZER, Andreas [AT]/[AT] (UsOnly)
Inventors
  • KLEINSORGEN, Klaus
  • KÖHLER, Uwe
  • BOUVIER, Alexander
  • FÖLZER, Andreas
Agents
  • KAISER, Dieter, R.
Priority Data
P 44 45 496.120.12.1994DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR RÜCKGEWINNUNG VON METALLEN AUS GEBRAUCHTEN NICKEL-METALLHYDRID-AKKUMULATOREN
(EN) PROCESS FOR RECOVERY OF METALS FROM USED NICKEL-METAL HYDRIDE ACCUMULATORS
(FR) PROCEDE DE RECUPERATION DES METAUX CONTENUS DANS DES ACCUMULATEURS USES EN NICKEL-HYDRURE METALLIQUE
Abstract
(DE)
Beim Recycling von verbrauchten Nickel-Metallhydrid-Akkumulatoren wird der Batterieschrott nach mechanischer Abtrennung der Grobbestandteile durch Magnet- und Windsichtung in Schwefelsäure gelöst. Mit der Aufschlußlösung, aus der zuvor die Seltenen Erden (aus den Wasserstoff-Speicherlegierungen in den negativen Elektroden) sowie Eisen und Aluminium durch Fällung selektiert worden sind, wird eine Solventextraktion unter solchen Bedingungen (pH-Wert, Wahl des Lösungsmittels, Volumenverhältnis der Phasen) durchgeführt, daß sich Nickel und Kobalt quantitativ und in dem gleichen Atomverhältnis in der wässerigen Phase befinden, in welchem sie im Schrott vorgelegen haben. Dies ermöglicht eine gemeinsame Rückgewinnung durch Simultanelektrolyse, wobei das Abscheidungsprodukt eine Vorlegierung bildet, die zusammen mit den ausgefällten und elektrometallurgisch als Mischmetall wiederaufgearbeiteten Seltenen Erden für die Herstellung neuer Wasserstoff-Speicherlegierungen eingesetzt werden kann.
(EN)
When recycling used nickel-metal hydride accumulators, scrap batteries are dissolved in sulphuric acid after the coarse components have been mechanically separated in a magnetic wind sifter. Rare earths (from the hydrogen storage alloys in the negative electrodes), iron and aluminium are precipitated, then the disintegration solution is solvent-extracted in such conditions (pH value, choice of solvent, volume ratio between the phases) that the quantity and atomic ratio of nickel and cobalt is the same in the aqueous phase as in the scrap. They can thus be recovered together by simultaneous electrolysis. The separated product forms a pre-alloy that may be used together with the precipitated rare earths converted by an electrometallurgical process into mischmetal to produce new hydrogen storage alloys.
(FR)
Lors du recyclage d'accumulateurs usés en nickel-hydrure métallique, les batteries mises à la ferraille sont dissoutes dans de l'acide sulfurique, une fois que les parties grossières ont été mécaniquement séparées dans un séparateur magnétique à vent. Les terres rares (faisant partie des alliages de stockage d'hydrogène dans les électrodes négatives), le fer et l'aluminium sont séparés par précipitation, puis la solution de désintégration est soumise à une extraction avec solvant dans des conditions telles (valeur de pH, choix du solvant, rapport en volume entre les phases) que la quantité et le rapport atomique de nickel et de cobalt dans la phase aqueuse soient les mêmes que dans la ferraille. On peut ainsi les récupérer ensemble par électrolyse simultanée. Le produit ainsi obtenu forme un préalliage qui peut être utilisé avec les terres rares précipitées et transformées en mischmétal par un procédé électrométallurgique pour produire de nouveaux alliages de stockage d'hydrogène.
Other related publications
Latest bibliographic data on file with the International Bureau