Kawasaki Jukogyo Kabushiki Kaisha

Hiroaki Osawa

Fuminori Ando

Mariko Yamashita

Koji Fukumoto

Masaki Tsuzawa

Chie Nakajima

Masahiro Sugata

Ryosuke Nagai

Shoji Takada

Akihiro Yoshinaga

Yoshihisa Yamaguchi

Shigeki Ochi

Hiroshi Bando

Koichi Dei

Shinnosuke Aomatsu

A system for processing a waste lithium-ion battery includes: a first aqueous solution generator that includes a first elution tank storing water, and that immerses an active material taken out from the waste lithium-ion battery in the water in the first elution tank and subjects the active material to carbon dioxide bubbling in the first elution tank to generate an aqueous solution of pH 5.5 to 8.5, in which lithium contained in the active material is eluted; a first solid-liquid separator that removes a solid component from the aqueous solution generated by the first aqueous solution generator; a first crystallizer that causes lithium carbonate to be deposited from the aqueous solution, from which the solid component has been removed by the first solid-liquid separator; and a second solid-liquid separator that performs solid-liquid separation on slurry containing the lithium carbonate deposited in the first crystallizer to take out the lithium carbonate.

System for and method of processing waste lithium-ion battery

A system for and a method of processing a waste lithium-ion battery make it possible to improve heat treatment efficiency and to heat-treat a large-sized waste lithium-ion battery without disassembling the battery. One example of the system for processing a waste lithium-ion battery includes a heater that heat-treats a waste lithium-ion battery at a heating temperature of lower than 400° C. to decompose and remove an electrolyte solution from the waste lithium-ion battery.

A waste lithium-ion battery roasting apparatus includes: a transport mechanism including a cylindrical body, the cylindrical body containing an internal atmosphere that is a reducing atmosphere or a low-oxygen atmosphere; a heating mechanism that heats an outer wall of the cylindrical body to increase an internal temperature of the cylindrical body, and controls heating temperatures individually at which the heating mechanism heats the outer wall at different respective positions in a transporting direction in which the transport mechanism transports a waste lithium-ion battery; and a controller that controls the heating temperatures, at which the heating mechanism heats the outer wall, in accordance with a transporting speed at which the transport mechanism transports the waste lithium-ion battery, such that a temperature increase rate of the waste lithium-ion battery transported inside the cylindrical body is a predetermined temperature increase rate.

Waste lithium-ion battery roasting apparatus

Growing community of inventors

Kobe, Japan

Hiroaki Osawa