To provide a method for producing a low-S-containing gas, by making reduced iron absorb sulfur in a reducing gas and thereby removing sulfur from the reducing gas, in a process of producing the reduced iron.
In the process for producing the reduced iron by reducing iron ore with the gas, this production method comprising the steps of: charging at least any one of a part of a reduced iron product produced in a reducing furnace, and screened reduced iron obtained by screening the massive reduced iron product prepared by aggregating the reduced iron product produced in the reducing furnace by a molding machine, into the reducing furnace; cooling the gas discharged from the reducing furnace as needed; and supplying a part of the gas to the reducing furnace to control the temperature of the reducing furnace into 400 to 500°C. The reducing furnace is preferably a fluidized-bed furnace or a shaft furnace.
KOTSURU HIROYUKI
| JP2002529598A | 2002-09-10 | |||
| JPS5177517A | 1976-07-05 | |||
| JP2005042142A | 2005-02-17 | |||
| JP2005105046A | 2005-04-21 | |||
| JPH09194920A | 1997-07-29 |
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nagasaka Tomoyasu