sumitomo, page-7

New extaction agent for recycling and processing of mineral resources

I wonder if it has been tested on the 20% concentrate or the 92% mixed Reo



succeeded in developing an extracting agent with superior cobalt and rare earth extraction
capabilities. It is expected to apply this extracting agent to the recovery of cobalt and rare earths in
recycling processes for secondary batteries and fluorescent tubes, as well as in the processing of
mineral resources.


In the same way, from aqueous solutions containing both the heavy rare earth elements (*4) of
thulium and ytterbium and the light rare earth elements (*4) of lanthanum and cerium (which were
previously very difficult to separate), it is possible to prioritize the extraction of lanthanum and
cerium.
In addition, it has also been confirmed that europium can be selectively extracted from aqueous
solutions containing europium, yttrium, and zinc, and we believes that separation of these elements
will become possible.



http://www.smm.co.jp/E/uploaded_files/130520e.pdf