METHOD OF RECOVERING CONSTITUENT MATERIAL OF SOLAR CELL ELEMENT

PROBLEM TO BE SOLVED: To provide a method of recovering, safely and efficiently without occurrence of waste liquid, a constituent material of a solar cell element, including cell constituting materials, e.g. silicon substrates in solar cell modules and glass substrate discarded so far.SOLUTION: A method of recovering constituent materials of a solar cell element contained in a solar cell module includes a step of carrying a solar cell element including at least a cell part, a glass substrate and an ethylene vinyl acetate(EVA) sealing material to a continuous type heat treatment furnace retaining an oxygen concentration in the furnace of 1.0-3.0 vol.%, removing and discharging acetic acid gas, an EVA decomposition gas, in a preliminary heating decomposition part set at 300-400°C, removing the EVA sealing material from the solar cell element by eliminating decomposition gas of EVA other than acetic acid in a thermal treatment part set at 400-550°C and separating the cell part from the glass substrate.