| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for recovering carbon fiber that can recover, in an industrially efficient and safe manner, carbon fiber of high quality reusable as a reinforcing material, from waste carbon fiber reinforced plastic (waste CFRP) by decomposing matrix resin of waste CFRP.SOLUTION: A method for recovering carbon fiber includes heating waste CFRP 100 containing carbon fiber in matrix resin, to carry out decomposition treatment of the matrix resin in the waste CFRP 100, and recovering carbon fiber from a decomposition-treated material 200 left after treatment. The method includes a decomposition treatment process for supplying the waste CFRP 100 from one side of an inner cylinder 11 serving as a treatment cylinder of an external heating type rotary kiln A, conveying the waste CFRP 100 to roll toward the other side of the inner cylinder 11 in association with the rotation of the inner cylinder 11, and exposing the waste CFRP 100 under rolling conveyance to superheated steam in the inner cylinder 11 to carry out decomposition treatment of the matrix resin. |
