Provided is a regeneration rotary kiln capable of reducing the proportion of combustible gas in waste gas and capable of reducing cost for generating superheated steam.
A regeneration rotary kiln (1) is characterized by including: a superheated steam generation unit (2) that generates superheated steam; a tube (3) capable of rotating about its axis and having a heating section (A) where, while the superheated steam is being supplied thereto, carbon fiber reinforced plastic (10) containing a matrix resin and carbon fibers is heated to generate combustible gas (10G) from the matrix resin to extract the carbon fibers (10S) from the carbon fiber reinforced plastic (10); a first combustion chamber (43a) that is placed outside the tube (3) and that burns the gas (10G) introduced from the heating section (A) to heat the heating section (A); and a second combustion chamber (43b) that burns the gas (10G) introduced from the first combustion chamber (43a) to supply heat for generating the superheated steam.