An air feeding device for producing anodes in an annular kiln includes at least one kiln unit having a heating zone, a firing zone, and a cooling zone, each having a plurality of kiln chambers which are interconnected by heating channels, are formed as heat exchangers and are used to receive anodes. Primary air is introduced into the cooling zone by a primary air feeding device for the passage of air through the kiln unit and, once it has passed through the firing zone, being discharged from the heating zone as flue gas by means of an exhaust device. Secondary air is fed into the heating zone upstream of the exhaust device by a secondary air feeding device.