Abstract: A burner for heating a high-velocity stream of a combustion supporting gas comprises a pipe fed with a fuel gas and extending across the flow direction of the combustion supporting gas stream. The pipe defines holes generating fuel gas jets directed in the direction of the combustion supporting gas stream flow, and a flame stabilizer is arranged downstream of the pipe in this direction, the flame stabilizer including two divergent combustion supporting gas stream deflector wings delimiting a downstream zone shielded from said gas stream and an upstream zone.