Metal ion extraction materials and processes using same

C - Chemistry – Metallurgy – 22 – B

Patent

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C22B 3/24 (2006.01) B01J 45/00 (2006.01) C02F 1/58 (2006.01) C02F 1/68 (2006.01) C22B 3/44 (2006.01) C22B 15/00 (2006.01) C02F 1/26 (2006.01) C02F 1/28 (2006.01)

Patent

CA 2440977

The invention relates to a metal ion extractant material for use in the extraction of metal ions from a solution or slurry, the extractant material being based on an ethyleneimine-containing polymer. The ethyleneimine- containing polymer may be attached to a solid substrate which may optionally be ground to form a particulate extractant material. Alternatively, an ethyleneimine-containing polymeric material may be cross-linked and subsequently ground to form a particulate metal ion extractant material without the need for a solid substrate.

La présente invention concerne un matériau d'extraction d'ions métalliques destiné à extraire des ions métalliques d'une solution ou d'une suspension épaisse, ce matériau d'extraction étant fondé sur un polymère contenant de l'éthylènimine. Ce polymère contenant de l'éthylènimine peut être lié à un substrat solide qui peut éventuellement être moulu de façon à former un matériau d'extraction particulaire. Dans un autre mode de réalisation de l'invention, ce matériau polymère contenant de l'éthylènimine peut être réticulé et subséquemment moulu de façon à former un matériau d'extraction d'ions métalliques particulaire sans nécessiter la présence d'un substrat solide.

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