Patent ID: 7553153

Claim:
A solid-fuel burner, comprising a fuel nozzle for injecting a mixed fluid with a mixture of solid fuel and air as a carrier gas thereof, a plurality of air nozzles provided on the outside of the fuel nozzle for surrounding the fuel nozzle; an end portion of an inner circumferential wall of the air nozzle being located at least at the outermost circumference of the air nozzle and provided with an outwardly expanding portion, an inductive member provided at an outlet of the air nozzle and located at least on the outermost circumference so as to direct flow of air in the direction of outer circumference, and a guide member provided in an upstream portion of the inductive member parallel to a throat section of outer circumferential wall of the air nozzle, wherein the inductive member is operatively connected to the guide member, and the length of the guide member is no greater than half of the length of the throat section of the outer circumferential wall of the air nozzle.