Shaft furnace for direct reduction of oxides

Details Shaft furnace for direct reduction of oxides Shaft furnace for direct reduction of oxides

1996-02-22

1997-12-30

Bennett, Henry A.

Heating

Shaft type

432 96, 432 99, 432102, F27D 108

Patent

active

057022461

ABSTRACT:
A shaft furnace for reduction of oxides includes a shaft member having an oxide inlet and defining a pre-heating and pre-reducing zone downstream of the oxide inlet, a reducing zone downstream of the pre-heating and pre-reducing zone a transition zone downstream of the reducing zone, and a discharge zone downstream of the transition zone; and a gas reforming zone associated with the shaft member for reforming a methane-containing gas into a reformed gas and for introducing the reformed gas into the reducing zone whereby oxides in the reducing zone are reduced by the reformed gas.

REFERENCES:
patent: 3260514 (1966-07-01), Asano et al.
patent: 3955915 (1976-05-01), Buchner
patent: 3957422 (1976-05-01), Kohn
patent: 4031183 (1977-06-01), Rourke
patent: 4178151 (1979-12-01), Huestis
patent: 4747773 (1988-05-01), Predescu et al.
patent: 4805881 (1989-02-01), Schultz et al.
patent: 5118288 (1992-06-01), Litka et al.
patent: 5423676 (1995-06-01), Tsunemi et al.
patent: 5460517 (1995-10-01), Scheibenreif et al.

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