<報文>亜鉛電解採取電解液の電導度について

概要

論文の詳細を見る
Electrical conductivities were measured in acidic zinc sulfate solutions containing impurity sulfates such as MgSO_4,Na_2SO_4,K_2SO_4,and (NH_4)_2SO_4,at concentrations covering those of electrolytes in zinc electrowinning plants. The results obtained in this work are summarized as follows : (1) Electrical conductivity increased as the concentration of sulfuric acid and the temperature increased, and decreased with an increase in the concentration of sulfates. (2) MgSO_4 was found to affect negatively the electrical conductivity of the solution in the same manner that ZnSO_4 exhibited. Then, at a constant concentration or sulfuric acid, the electrical conductivity of the ZnSO_4-MgSO_4-H_2SO_4 solution was expressed by a simple function of a sum of molar concentrations of ZnSO_4 and MgSO_4. (3) Electrical conductivity of the ZnSO_4-MgSO_4-H_2SO_4 solutions was a smooth function of {2[H_2SO_4]-[SO_4]_T} in mole/l, which was derived under the assumptions that H^+ is a predominant charge carrier in acidified solutions and that SO_4^<2-> from the sulfates forms HSO_4^- to reduce the concentration of H^+ in the solution. (4) Also, the sulfates of Na, K, and NH_4 decreased the electrical conductivity, and their effect was less than that by ZnSO_4 and MgSO_4.
東北大学の論文
1981-10-20