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Base metal recovery

The Design of Solvent Extractants for Base Metal Recovery... [Pg.366]

As a consequence, the selectivity of extraction of first transition series dications does not follow the Irving Williams order when these reagents are used in base metal recovery. The bis(2-ethylhexyl)ester of phosphoric acid (D2EHPA) shows [1] a preference Zn2+ > Cr21 > Mn2+ > Fe2+ > Co2+ > Ni2+ V2+ which is exploited in the recovery of zinc from primary sources. [69] M2+ ions which form tetrahedral complexes and M3+ ions which show a preference for octahedral donor sets give neutral complexes with 4 1 and 6 1 D2EHPA metal stoichiometries respectively,... [Pg.375]

Applications and process techniques for impregnated resins in base metal recovery on an industrial scale come either directly or after a solvent extraction unit, for (1) refining concentrated metal salt solutions (e.g., by adsorbing interfering heavy metal traces from nonferrous metal electrolytes and (2) extracting special metals from acid to neutral solutions in which the metal ions to be adsorbed are present in low concentration. [Pg.258]

This process requires two or three distinct steps depending on whether a final slag cleaning step for complete base metal recovery is required. The steps for single and two furnace operation are ... [Pg.168]

See other pages where Base metal recovery is mentioned: [Pg.340]    [Pg.365]    [Pg.367]    [Pg.369]    [Pg.371]    [Pg.373]    [Pg.375]    [Pg.377]    [Pg.379]    [Pg.381]    [Pg.382]    [Pg.439]    [Pg.457]    [Pg.306]    [Pg.699]    [Pg.726]   


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