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首页> 外文期刊>Separation and Purification Technology >Anode activating agent recovery by magnetic separation from the <0.075 mm fraction of crushed nickel metal hydride batteries from hybrid vehicles
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Anode activating agent recovery by magnetic separation from the <0.075 mm fraction of crushed nickel metal hydride batteries from hybrid vehicles

机译：通过磁分离从混合动力汽车中破碎的<0.075 mm碎镍金属氢化物电池中回收阳极活化剂

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摘要

Nickel metal hydride batteries of hybrid vehicles contain rare metals such as Ni, Co, and rare-earth elements as electrode components. A direct smelting method has been used to recover Ni from waste batteries, but the Co and rare-earth elements are difficult to extract with this conventional method. To recycle Co and rare-earth elements, physical pretreatment is necessary to separate the anode and cathode compounds before smelting. This study investigated the magnetic separation of anode and cathode activating agents in the <0.075 mm fraction of crushed cylindrical and prismatic types batteries. In the cylindrical type anode activating agent concentrated in the non-magnetic product of the Davis tube tester, separated at low magnetic fields (0.1 T), while in the prismatic type anode activating agent concentrated in the magnetic product of high gradient magnetic separation. Microscope observations and results of the elemental analysis with energy dispersive X-ray spectroscopy showed that this separation behavior difference originates from differences in the cathode component manufacturing processes. An optimum physical treatment process using magnetic separation is proposed to recover the rare metal components.
机译：混合动力车辆的镍氢金属电池包含镍，钴等稀土金属和稀土元素作为电极成分。已经使用直接熔炼法从废电池中回收镍，但是用这种常规方法难以提取钴和稀土元素。为了回收钴和稀土元素，在冶炼之前必须进行物理预处理以分离阳极和阴极化合物。这项研究研究了破碎的圆柱形和棱柱形电池中小于0.075 mm的部分中阳极和阴极活化剂的磁分离。在圆柱型阳极活化剂中，浓缩在Davis管测试仪的非磁性产物中，在低磁场（0.1 T）下分离，而在棱镜型阳极活化剂中，浓缩在高梯度磁性分离的磁性产物中。显微镜观察和能量色散X射线光谱分析的元素分析结果表明，这种分离行为的差异源自阴极组件制造工艺的差异。提出了利用磁选的最佳物理处理工艺以回收稀有金属成分。

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