To provide a method for producing pig iron by using iron ore with a high content of zinc, which can effectively use the iron ore with the high content of zinc and can solve a problem that both of zinc and iron are in short supply.
The method for producing the pig iron by using the iron ore with the high content of zinc includes: producing a raw material 2 for a blast furnace by using the iron ore with the high content of zinc, which contains 0.01 mass% or more zinc and 50 mass% or more iron; producing the pig iron by charging the raw material 2 for the blast furnace into the blast furnace 1; also collecting zinc-containing dust 4 contained in a gas exhausted from the blast furnace; and collecting zinc 6 from the zinc-containing dust 4 by using a reducing furnace 5. The raw material 2 for the blast furnace is preferably a sintered ore or a pellet. It is also preferable to load the zinc-containing dust 4 on a mobile hearth, supply heat from an upper part of the mobile hearth to reduce the zinc-containing dust 4, and collect the zinc 6 along with producing reduced iron 7.
| JPH03191006 | METHOD FOR OPERATING BLAST FURNACE |
| JP3039354 | OPERATION OF BLAST FURNACE |
| JP4984396 | Blast furnace operation method |
HIROHANE HIROYUKI
ISHIWATARI NATSUO
SAKAI ATSUSHI
| JPH11335712A | 1999-12-07 | |||
| JPH11172312A | 1999-06-29 | |||
| JPH11241125A | 1999-09-07 | |||
| JPS6465212A | 1989-03-10 | |||
| JP2005220398A | 2005-08-18 | |||
| JP2005299979A | 2005-10-27 | |||
| JP2001033173A | 2001-02-09 | |||
| JP2000169906A | 2000-06-20 | |||
| JP2005089794A | 2005-04-07 |
| WO2009131242A1 | 2009-10-29 | |||
| WO2009145348A1 | 2009-12-03 |
Kazuhiro Mori
Next Patent: METHOD FOR PRODUCING REDUCED IRON