Heat treatment system, sagger provided with heat treatment system, and heat treatment method

The invention provides a heat treatment system, a sagger provided in the heat treatment system, and a heat treatment method, and aims to efficiently perform heat treatment on powder of a lithium positive electrode material. The heat treatment system is provided with: a sagger for accommodating a powder of a lithium positive electrode material; and a heat treatment furnace for performing heat treatment on the powder accommodated in the saggar. At least the surface, in contact with the powder, of the saggar is made of nickel-based alloy. The heat treatment furnace is configured so as to heat-treat the powder contained in the saggar at an atmospheric temperature of 300-1000 DEG C (inclusive) for 10-30 hours (inclusive). 本发明提供热处理系统、该热处理系统具备的匣钵以及热处理方法，其课题在于，对锂正极材料的粉体效率良好地进行热处理。热处理系统具备：匣钵，其对锂正极材料的粉体进行收纳；以及热处理炉，其对匣钵中所收纳的粉体进行热处理。匣钵的至少与粉体接触的表面由镍基合金形成。热处理炉构成为：将匣钵中所收纳的粉体于300℃以上1000℃以下的气氛温度进行10小时以上30小时以下热处理。