PROCESS FOR PRODUCING SINTERED ORE AND SINTERING MACHINE

Title:

PROCESS FOR PRODUCING SINTERED ORE AND SINTERING MACHINE

Document Type and Number:

WIPO Patent Application WO/2010/021065

Kind Code:

A1

Abstract:

A process for producing a sintered ore which comprises: a charging step in which a pallet traveling cyclically is charged with a raw sintering material comprising a powdery ore and a carbonaceous material to form a charge layer of the raw sintering material on the pallet; an ignition step in which the carbonaceous material present in the surface of the charge layer is ignited with an ignition furnace; a dilute-gaseous-fuel production step in which a gaseous fuel is supplied to the air present over the charge layer to dilute the fuel and thereby obtain a dilute gaseous fuel having a concentration not higher than the lower combustion limit concentration; and a combustion step in which the dilute gaseous fuel and air are sucked into the charge layer by the suction of a wind box disposed beneath the pallet to burn the dilute gaseous fuel in the sinter layer and, at the same time, burn the carbonaceous material contained in the charge layer with the aid of the air sucked into the charge layer and thereby produce a sinter cake.

Inventors:

OYAMA NOBUYUKI (JP)
IWASAKI KATSUHIRO (JP)
KADOYA HIDEKI (JP)
NAGASHIMA YASUO (JP)
TAKO HIROSHI (JP)

Application Number:

PCT/JP2008/072223

Publication Date:

February 25, 2010

Filing Date:

December 02, 2008

Export Citation:

Click for automatic bibliography generation Help

Assignee:

JFE STEEL CORP (JP)
OYAMA NOBUYUKI (JP)
IWASAKI KATSUHIRO (JP)
KADOYA HIDEKI (JP)
NAGASHIMA YASUO (JP)
TAKO HIROSHI (JP)

International Classes:

C22B1/20; C22B1/16; F27B21/08

Foreign References:

JP2008095170A	2008-04-24
JPS4627126B1	1971-08-06
JPS5651536A	1981-05-09
JP2008291354A	2008-12-04
JPS4818102A
JPS4627126B1	1971-08-06
JPS5518585A	1980-02-08
JPH05311257A	1993-11-22
JPS60155626A	1985-08-15

Other References: