Study on Removing Zinc from Nickel Electrolyte by Ion-exchange

来源期刊：中南大学学报(英文版)2000年第4期

论文作者：ZHANG Gui-qing ZHANG Qi-xiu XIAO Lian-sheng GONG Bo-fan

文章页码：194 - 197

Key words：zinc; removal; nickel electrolyte; ion-exchange

Abstract: In the process of nickel production by diaphragm electrolysis, the quality of the product has been tremendously affected by the content of zinc in the nickel electrolyte. Removing zinc from nickel electrolyte by ion-exchange is studied in the paper. Resin D201 is selected as the resin for zinc removing. Effects of the operative parameters, such as temperature, pH value and the contact time on zinc adsorption are observed and the desorption feature of the zinc-loaded resin is inspected. The results show that macroporous anion-exchange resin D201 has excellent adsorption and desorption properties. Its breakthrough capacity and saturation capacity in zinc adsorption reach 0.81 g/L of zinc and 1.16 g/L of zinc respectively, when the operative temperature is 60℃ and the contact time is only 5 min. In addition, compared with gel type IER 201×7 used industrially nowadays, this resin has better wear ability and greater intensity.