石墨
分数(化学)
烘烤
质量分数
阴极
材料科学
冶金
分析化学(期刊)
化学
复合材料
色谱法
物理化学
作者
Xiao‐Sheng Yang,Akseli Torppa,Kimmo Kärenlampi
标识
DOI:10.3390/materproc2021005030
摘要
The separation of graphite from cathode active materials containing Co, Ni, and Mn, and the metals Cu and Al by flotation was tested and evaluated with a black mass sample of crushed spent Li-ion batteries. The metals, Cu and Al, were mostly (>90%) concentrated by sieving into an oversize fraction (+0.25 mm). Graphite and the cathode active materials in the oversize fraction (+0.25 mm) were effectively separated from the metals, Cu and Al, by flotation. Pre-treatment by roasting at a temperature of 350–450 °C improved the flotation efficiency of graphite from the cathode active materials for the undersize fraction (−0.25 mm).
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