Study on the replacement of lead-based anodes by dimensionally stable anodes (DSAs) during zinc electrowinning process

锌电解过程中尺寸稳定阳极（DSA）替代铅基阳极的研究

• 批准号: 518201-2017
• 负责人: Alamdari, Houshang
• 金额: $ 1.82万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639490
• 关键词: Study; replacement; lead; based; anodes

Canada produces 6% of the world's supply of refined zinc while CEZinc alone produces 265 000 tons at itsValleyfield plant. This process is energy intensive and its need for electricity hits 45 M$ per year. Increasingthe energy efficiency is the key factor to make the company more profitable and competitive. A promising wayto reduce power consumption at CEZinc is to perform a substantial technology change by replacing Pb-Aganodes with coated Ti anodes. Although such a technology change represents a considerable energy saving, itsimplementation is not trivial and a number of issues must be addressed before. This exploratory project aims atidentifying and validating these issues. More specifically, the focus will be made on the effect of newtechnology on the operation conditions of the zinc electrolysis cells, allowing better control of Mn in theelectrolyte since the Mn buildup in the electrolyte is the negative consequence of using Ti anodes.

加拿大生产的精炼锌占全球供应量的 6%，而仅 CEZinc 的 Valleyfield 工厂就生产了 265,000 吨精炼锌。这个过程是能源密集型的，每年的电力需求达到 45 M$。提高能源效率是提高公司盈利能力和竞争力的关键因素。 CEZinc 降低功耗的一个有前景的方法是进行重大技术变革，用涂层钛阳极取代铅阳极。尽管这样的技术变革代表了相当大的节能，但其实施并非微不足道，之前必须解决许多问题。这个探索性项目旨在识别和验证这些问题。更具体地说，重点将放在新技术对锌电解槽操作条件的影响上，从而更好地控制电解液中的锰，因为电解液中锰的积累是使用钛阳极的负面后果。