| abstract |
The present invention relates to the use of monodisperse, macroporous chelating resins in metal winning in hydrometallurgical processes, in particular in resin-in-pulp processes. According to the invention, the monodisperse, macroporous chelating resins have a mean bead diameter in the range 0.35-1.5 mm, preferably 0.45-1.2 mm and particularly preferably 0.55-1.0 mm. The application also provides a process for preparing monodisperse, macroporous chelating resins having weak base groups, in particular picolinamino groups. The monodisperse chelating resins are able to remove, for example, nickel and cobalt ions in relatively large amounts from a leach suspension as heterodisperse chelating resins. |