| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for feeding gas fuel, in the case gas fuel is fed and a sintering operation is performed in a downward suction type sintering machine, capable of detecting the abnormal burning of the gas fuel at high precision, and a device therefor.SOLUTION: A sintering raw material charging layer comprising fine ore and a carbonaceous material is formed on a circularly moving pallet, the carbonaceous material in the surface of the charging layer is ignited, thereafter, air including gas fuel fed from plurally gas fuel feeders installed in the downstream of the ignition furnace in the machine length direction to the inside of the hoods thereof is sucked with a wind box disposed at the lower part of the pallet and is introduced into the charging layer, and the gas fuel and the carbonaceous material are burnt in the charging layer to produce sintered ore. At this time, a thermometer for measuring the surface temperature of the charging layer is disposed in the inside of the hood of each gas fuel feeder, it is decided that the abnormal burning of the gas fuel has been caused when the measured value of the thermometer reaches a prescribed threshold or higher, and the feed of the gas fuel to the gas fuel feeding piping is stopped. |
