For ignition furnaces of sintering plants, the combustion equipment free from troubles which are caused by coal ash melting has been developed for pulverized coal firing. The developed burner has a high combustion efficiency of fuel with a short stable flame, that is, when coal combustion rate is 30 kg/h and injecting coke oven gas is equivalent to 10% of total heat input of fuel, the flame length is 0.8 m. The developed distributor for pulverized coal has been proved to give a small distribution error of less than ±4%.
These burners and distributor were attached to an ignition furnace in the Sintering Plant. In comparison with the conventional coke oven gas firing (25 burners), heat input was increased by the change of heat distribution but ignition fuel cost was decreased 40%. Good quality of sintered ore was also achieved.
