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US20130266493 METHOD FOR SEPARATING NICKEL FROM MATERIAL WITH LOW NICKEL CONTENT  
The invention relates to a method for separating nickel and other valuable metalsparticularly from material having low nickel content, which contains iron and magnesium in addition to nickel and...
US20150247216 METHOD FOR THE HYDROMETALLURGICAL RECOVERY OF LITHIUM, NICKEL AND COBALT FROM THE LITHIUM TRANSITION METAL OXIDE-CONTAINING FRACTION OF USED GALVANIC CELLS  
A method for the hydrometallurgical recovery of lithium from a lithium transition metal oxide-containing fraction of used galvanic cells.
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