抄録
New technologies for zinc electrowinning process were reviewed as part of the mission of the "Committee for the Surveillance Study on the Development of Innovative Non-Ferrous Metal Smelting Technologies in the 21st Century" (Alias: The Oishi Committee) at the Mining and Materials Processing Institute of Japan (MMIJ). Since more than 85% of the world's zinc is produced by means of the roast-leach-electrowin process, demand for technological innovation in zinc electrowinning continues to increase. Based on a survey of literature published mainly in the recent ten years, the committee reviewed the effect of additives and impurities, which play a very important role in zinc eletrowinning particularly at high current densities. Furthermore, some challenging technologies such as hydrogen anode and spouted bed cathode that may lead to an innovation in zinc eletrowinning technology in future, and some basic thermodynamic researches are also introduced in this article.
