Iwasaki, IwaoTamagawa, T.Fu, N. XKobayashi, M2015-10-072017-04-142015-10-072017-04-141999https://hdl.handle.net/11299/187121A low temperature chlorination-selective oxidation, followed by aqueous chloride leaching and SX-EW for producing electrolytic copper, elemental sulfur and ferric oxide was investigated for hydrometallurgical processing of a chalcopyrite concentrate. In this article, the selective oxidation phase of the process is described. The selective oxidation requires a temperature well above the CuCl-FeCl3 eutectic points. The test procedure was developed with a batch reactor and then tested with a continuous reactor. The process was initiated by adding small amounts of chlorinated samples to a fluidizing bed of dead-roasted sulfide concentrate micro-pellets. The selectively oxidized samples thus prepared were shown to fully dissolve copper, while virtually all the iron remained undissolved.enHydrometallurgyLeachingChalcopyriteGeochemical analysisNatural Resources Research InstituteUniversity of Minnesota DuluthTechnical Report