Abstract: The present invention provides an apparatus for recycling of waste batteries, the apparatus including a work part in which objects are placed to heat the objects and recover valuable metals from the objects, wherein in the work part, the objects are heat-treated in a mixed reducing gas atmosphere in which log(PCO2/PCO), which is a logarithmic value of a division value of partial pressures of carbon dioxide and carbon monoxide, ranges from ?2.15 to 2.5. According to the present invention, heat treatment efficiency can be maximized by preventing carbon emission in a process of heat treatment of waste batteries and actively controlling a gas environment in which carbon monoxide and carbon dioxide are mixed.

Abstract: Disclosed is a method of recovering valuable metals from spent batteries according to various embodiments for achieving the above-described objects. The method may include performing heat treatment on a target material corresponding to spent lithium-ion batteries using a heat treatment device, performing a crushing process, using a crushing device, on the recovered target material after the heat treatment to obtain a plurality of recovered materials, performing a sieving process on the plurality of recovered materials through a sieving device to obtain a plurality of separated fractions having different particle sizes, performing a leaching process, using a leaching device, on a first separated fraction among the plurality of separated fractions to separate lithium carbonate (Li2CO3) from the first separated fraction and obtain valuable metal oxides.

Abstract: The present invention provides an apparatus for vertical recycling of waste batteries, the apparatus including a heating part heating objects located inside a work part and a controller controlling an operation of the heating part, wherein the controller controls at least one or more of a temperature increase rate and a temperature increase time of the heating part. According to the present invention, through heat treatment based on an optimal temperature increase rate, it is possible to maximize heat treatment efficiency, since a storage part to which objects are input can be easily moved and firmly fixed and worker intervention in a high-temperature, high-pressure environment can be minimized, convenience and safety can be significantly improved, and through the present invention that adopts a vertical dry smelting method, mass treatment of objects is possible without performing pretreatment processes thereon, and the generation of harmful substances can be minimized.