生命周期评价方法在氧化钴生产中的应用

氧化钴生产是锂钴氧二次电池全生命周期重要阶段之一。本实验是以粗氢氧化钴为原材料,利用生命周期评价方法对氧化钴生产进行综合分析,全面评价氧化钴生产中资源、能源消耗以及环境污染物排放,并对由此产生的环境影响潜值进行量化估算。结果显示,氧化钴生产中环境潜在影响大小依次是富营养化、粉尘和烟尘、酸化、全球变暖、固体废弃物负担,其相对值依次是:24.04、22.88、4.30、3.29、1.49。根据评价结果,提出对氧化钴生产过程进行技术改造及相关材料使用更换来降低氧化钴生产对环境的影响。

Application of Life Cycle Assessment in Cobalt Oxide Production

Production of cobalt oxide is one of the most important stages in whole life cycle of lithium-cobalt-oxide secondary battery.Crude cobalt hydroxide as reaction material in the experiment,life cycle assessment model of cobalt oxide production was established to assess energy consumption and pollutant discharge.Results showed that production of cobalt oxide engendered environment impact,with sequence as NP,AQP,AP,GWP and SWB.Technical renovation and material use were proposed to reduce environment impact in the cobalt oxide production.