Modified amine-aldehyde resins and uses thereof in...

B - Operations – Transporting – 03 – D

Patent

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B03D 1/01 (2006.01) B01F 17/00 (2006.01) B03D 1/012 (2006.01) B03D 1/016 (2006.01) C08G 12/36 (2006.01) C08G 12/40 (2006.01)

Patent

CA 2655980

Modified resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These modified resins are especially useful as froth flotation depressants in the beneficiation of many types of materials (e.g., mineral and metal ores), including the beneficiation of impure coal comprising clay impurities, as well as in the separation of valuable bitumen from solid contaminants such as sand. The modified resins are also useful for treating aqueous liquid suspensions to facilitate the removal of solid particulates, as well as the removal of metallic ions in the purification of water. The modified resins comprise a base resin that is modified with a coupling agent, which is highly selective for binding to solid contaminants and especially siliceous materials such as sand or clay.

L'invention concerne des résines modifiées servant à extraire une variété étendue de solides et/ou d'espèces ioniques des liquides dans lesquels ils sont suspendus et/ou dissous. Ces résines modifiées sont particulièrement utiles en tant que dépresseurs de flottation par mousse dans l'enrichissement d'une grande quantité de types de matériaux (par exemple, des minerais et des minerais métalliques), y compris l'enrichissement de charbon impur contenant des impuretés d'argile, ainsi que dans la séparation de bitume précieux de contaminants solides, tels que du sable. Ces résines modifiées sont également utiles pour traiter des suspensions liquides aqueuses afin de faciliter l'extraction de particules solides ou l'extraction d'ions métalliques dans la purification de l'eau. Ces résines modifiées comprennent une résine de base modifiée par un agent de couplage possédant une capacité de liaison extrêmement sélective avec des contaminants solides et, particulièrement, des matériaux siliceux, tels que le sable ou l'argile.

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