| Quaternary systems Cu-Sb-Ni(Co, Fe)-S and ternary system Cu-Sn-S with Au or Pt were studied at 1200℃ for Au and Pt distribution between matte and speiss. The results of this study are as following: 1) Au or Pt is soluble in speiss, because the Cu content except Cu included as Cu₂S in speiss is higher than that in matte. 2) Distribution coefficients of Au and Pt(K_(Au) and K_(Pt)) in the quaternary systems have similar trends, and the ratio of K_(Au) : K_(Pt) is about 10:1. 3) K_(Au) and K_(Pt) in Cu-Sb-S system are decreased with the addition of Ni, Co and Fe. 4) The effect of Ni on Au solubility in speiss is not same as that of Co or Fe, because Ni forms solid solution with Au in all composition range. 5) K_(Au) or K_(Pt) in Cu-Sn-S system is not nearly changed with the decreasing of Cu content in speiss. And the value of K_(Au) is less than 10 times of K_(Pt). |
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