Natural gas burner nozzle for burning refractory materials

The utility model relates to a fuel gas combustion auxiliary device, in particular to a natural gas burner nozzle for burning refractory materials. The natural gas burner nozzle aims to solve the problem that natural gas and air can not be completely mixed by utilizing the natural gas to burn the refractory materials, thereby influencing the combustion quality. The natural gas burner nozzle comprises a hollow casing and an air inlet pipe communicated with the hollow casing; a natural gas inlet pipe inserted in the casing is arranged in the casing in a penetrating manner, one end of the natural gas inlet pipe is hermetically connected with the casing through a flange disc and a seal ring, and the burner nozzle positioned at the outlet of the casing is arranged at the tail end at the other end thereof; air inlets communicated with the natural gas inlet pipe are uniformly distributed on the periphery of the burner nozzle; and control valves are respectively mounted on the air inlet pipe and the natural gas inlet