METHOD OF RECOVERING LITHIUM FROM LITHIUM ION BATTERY

• Main Authors: HONMA KENICHI, NAKAMURA MITSUJI, ISHIDA YASUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 12.02.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; DISPOSAL OF SOLID WASTE; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; PRETREATMENT OF RAW MATERIALS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION AND REFINING OF METALS; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

To provide a method of efficiently recovering lithium from a lithium ion battery.SOLUTION: A method of recovering lithium from lithium ion batteries contains a process of hydrothermally processing the following (1) or (2). (1) Water to which a crushed material of a roasted body of lithium ion batteries having a phosphorus content of 20 mg/g or smaller is added, (2) an aqueous solution to which a crushed material of a roasted body of the lithium ion batteries having a phosphorous content of 20 mg/g or smaller is added and which contains one or more kinds of additives selected from hydroxide and oxide of group 2 elements of periodic table.SELECTED DRAWING: None 【課題】リチウムイオン電池からリチウムを効率的に回収する方法を提供すること。【解決手段】下記の（１）又は（２）を水熱処理する工程を含む、リチウムイオン電池からのリチウムの回収方法。（１）リチウムイオン電池の焙焼体の破砕物であって、リン含有量が２０ｍｇ／ｇ以下である破砕物を添加した水（２）リチウムイオン電池の焙焼体の破砕物であって、リン含有量が２０ｍｇ／ｇ以下である破砕物を添加した、周期表第２族元素の水酸化物及び酸化物から選択される１種又は２種以上の添加剤を含む水溶液【選択図】なし