To improve the heat-efficiency of a hot stove by lowering temperature of the waste gas at the time of combustion.
In an operating system of the hot stove for continuously supplying hot air of prescribed quantity and temperature into a blast furnace BF by parallel connecting four sets of hot stoves 1HS-4HS between the blast furnace BF and a blower BL while lapping in order the blasting periods of the respective hot stoves 1HS-4HS, blasting butterfly valves BBV1-BBV4 for controlling the blasting into the respective hot stoves from the blower BL at the respective hot stoves 1HS-4Hs and a control apparatus 45 for controlling the opening degree of the respective blasting butterfly valves BBV1-BBV4 are provided. The control apparatus 45 is operated as the followings, that is, in the blasting period in one cycle of the respective hot stoves 1HS-4HS, the average opening degree of the blasting butterfly valves BBV1-BBV4 at the first half is made to be larger than the average opening degree at the second half, or the opening degree of the respective blasting butterfly valves BBV1-BBV4 at the first half is made to be larger than the opening degree at the second half.
UENO TOSHIAKI
HONDA MOTOKI
MIURA EIJI
GOTO YOSHIKATSU
TANIGAWA YOSHITAKA
SUGISAKA KAZUTOSHI
| JPS56108811A | 1981-08-28 | |||
| JPS5249910A | 1977-04-21 | |||
| JP2006137986A | 2006-06-01 |
Next Patent: FLUID PASTE FOR PREVENTING SULFURIZATION OF SILVER CLAY SINTERED COMPACT