THE EXTRACTION OF GOLD FROM CYANIDE SOLUTION BY α—ALKYL SUBSTITUTED PYRIDINE RESIN-中国期刊网

摘要 Inthispaper,wehavestudiedtheadsorptionpropertiesofgoldbyα-alkylsubstitutedpyridineresin(BPR)inalkalinesolution.ThesingleanddualcomponentkineticmasstransferprocessofAu(I),Ag(I)andothermetalcyanideionswerealsoinvestigated.Theresultsobtainedshowthatthemasstransferratesofthecyanideionsintheresinphasearecloselyrelatedtothemolarratioandtheconfigurationofmetalcyanideions.TheelutionkineticsofAu(I)andothercyanideionsbyNH4SCNhasbeeninvestigatedsystematically.TheintraparticlediffusioncoefficientandactivationenergyofAu(I),Ag(I),Ni(I)Fe(Ⅲ）cyanideanionsweredeterminedinCI,NO3,OH-typeBPRresinatdifferenttemperatures.ItisfoundfromtheexperimentalresultsthatthemechanismforextractingAu(I),Ag(I)andothermetalcyanideanionsbyBPRresinbelongstoionexchangeprocess.Thedifferenceofactivationentropyofsomemetalcyanideanions(ΔS-ΔS^-)wasevaluated.

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THE EXTRACTION OF GOLD FROM CYANIDE SOLUTION BY α—ALKYL SUBSTITUTED PYRIDINE RESIN

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THE EXTRACTION OF GOLD FROM CYANIDE SOLUTION BY α—ALKYL SUBSTITUTED PYRIDINE RESIN

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