METHOD FOR REMOVING ALUMINUM AND METHOD FOR RECOVERING METALS
卷宗概要
申请人
JX METALS CIRCULAR SOLUTIONS CO., LTD.
发明人
Naoki HIGUCHI; Kei SHIKADA
IPC 分类
CPC 分类
Provided are a method for removing aluminum which can effectively remove aluminum, and a method for recovering metals. A method for removing aluminum includes a leaching step of bringing a raw material obtained from lithium ion battery waste, the raw material having battery powder containing at least aluminum and nickel and/or cobalt, into contact with an acidic leaching solution to leach the battery powder to obtain a leached solution, wherein a molar ratio of fluorine to aluminum (F/Al molar ratio) of the raw material is 1.3 or more, and wherein, in the leaching step, the acidic leaching solution contains calcium and fluorine, aluminum is precipitated with calcium and fluorine, and the resulting precipitate is contained in a leached residue.
原文（中文）
Provided are a method for removing aluminum which can effectively remove aluminum, and a method for recovering metals. A method for removing aluminum includes a leaching step of bringing a raw material obtained from lithium ion battery waste, the raw material having battery powder containing at least aluminum and nickel and/or cobalt, into contact with an acidic leaching solution to leach the battery powder to obtain a leached solution, wherein a molar ratio of fluorine to aluminum (F/Al molar ratio) of the raw material is 1.3 or more, and wherein, in the leaching step, the acidic leaching solution contains calcium and fluorine, aluminum is precipitated with calcium and fluorine, and the resulting precipitate is contained in a leached residue.