Sb在铜电解液净化中的应用

Application of antimony in purification of copper electrolyte

介绍了Sb在铜电解液净化中的应用。铜阳极泥分银渣 (含Sb 2 1.35 %)以及由Sb2 O3 和BaSO4 合成的吸附剂能选择性吸附电解液中的As,Sb ,Bi。在确保电解液主要成分不变的情况下 ,不论是分银渣还是合成吸附剂都能从铜电解液中吸附 90 %Bi,80 %Sb及部分As。在讨论吸附机理的同时 ,还研究了阳极铜含Sb对电解过程杂质在阳极泥和电解液之间的分配比例的影响。发现提高Sb在阳极铜里的相对含量可增大电解过程As,Sb ,Bi进入阳极泥的比例 ,从而为铜电解净液寻找了一条方便经济的途径。

The application of antimony in the purification of copper electrolyte was presented. Copper anode slime residue extracted silver(Sb content 21.35%) and the adsorbent synthesized with Sb 2O 3 and BaSO 4 can selectively adsorb As, Sb and Bi from copper electrolyte. Under the conditions of fixed contents of Cu and H 2SO 4 in copper electrolyte, both the residue and the adsorbent can adsorb 90% of Bi, 80% of Sb as well as parts of As. Besides the mechanism of adsorption was discussed, the influence of antimony content in copper anode on the distribution of impurities between anode slime and electrolyte was studied. It was found that by increasing the content of Sb in anode properly, the amount of impurities remained in electrolyte can be markedly reduced, so the amount of electrolyte to be purified can be reduced.