The utility model provides a burner that it is solid useless that is used for large -scale coal fired boiler to handle life, including coal fired boiler and flare assembly useless admittedly, coal fired boiler furnace is equipped with one, overgrate air nozzle cluster, after -flame wind nozzle cluster and solid useless entry, admittedly useless flare assembly includes the feeder hopper, connect the inlet pipe top under the feeder hopper, buckle the back and connect the solid useless entry outside in the inlet pipe bottom to link up with the water -cooling bed that stretches into in the furnacefrom solid useless entry, the inlet pipe is kept away from one side trompil of hearth wall and is connected and broadcast material tuber pipe way and pushing equipment, coal fired boiler's afterbodybe equipped with be used for extracting again recirculated flue gas as broadcast material wind spout into broadcast the gas recirculation device that the material tuber pipe was said. The utility model discloses need not to drop into the dear combustion -supporting fuel that easily fires, reduced the running cost, can let harmful substance such as dioxin decompose, reduce the environmental pollution that waste incineration caused, device simple structure, convenient operation, dependable performance.