EVALUATION OF THE EFFECTIVENES OF MEXTRAL 204P AND MEXTRAL 507P IN ORDER TO ELIMINATE POSSIBLE IMPURITIES ACCOMPANYING COBALT IN THE REFINATION OF SOLVENT EXTRACTION TO FINALLY PRODUCE PURE COBALT. “CASE OF HYDROMETALLURGICAL PLANTS IN DRC”PDF

This present work aims to evaluate the effectiveness of two extracting including Mextral 204P and Mextral 507P and to eliminate all possible impurities which accompany the cobalt in the LG Raff solution finally to be able to produce pure cobalt with a yield best. During our study, we carried out four tests, the first of which included two tests of elimination of solvent extraction impurities; the other three tests each included four attempts to remove solvent extraction impurities. The results showed the yields of: 72, 88% cobalt with Mextral 204P at 10%; 79,66% cobalt with Mextral 204P at 20%; 75,42% cobalt with Mextral 507P at 10%. The elimination of solvent extraction impurity was observed and interpreted according to the isotherms of our two extracting. Unfortunately; not only was the order of the isotherms not respected, according to our results but other impurities could not be eliminate and this may be due to the other parameters that we were not able to vary.