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Title:
AUXILIARY BURNER FOR ELECTRIC FURNACE
Document Type and Number:
WIPO Patent Application WO/2018/021248
Kind Code:
A1
Abstract:
Provided is an auxiliary burner for an electric furnace, the burner being capable of increasing and homogenizing the heating effect of iron scrap by suitably and efficiently burning solid fuel along with gas fuel. This auxiliary burner 100 for an electric furnace comprises, in the stated order from the center side, a solid fuel injection tube 1, a gas fuel injection tube 2, and a combustion-supporting gas injection tube 3, all arranged coaxially, and is characterized in that: a flow path 30 of the combustion-supporting gas injection tube 3 is provided with a plurality of turning blades 4 for turning the combustion-supporting gas, and a flow path 20 of the gas fuel injection tube 2 is provided with a plurality of turning blades 5 for turning the gas fuel; and the angle θ1 of the turning blades 4 and the angle θ2 of the turning blades 5 satisfy the relationship θ1<θ2.

Inventors:
TSUTSUMI KOICHI (JP)
MIWA YOSHIHIRO (JP)
OZAWA SUMITO (JP)
SUMI IKUHIRO (JP)
TOMOZAWA KENICHI (JP)
ITO TAKAYUKI (JP)
Application Number:
JP2017/026715
Publication Date:
February 01, 2018
Filing Date:
July 24, 2017
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
CHUGAI RO KOGYO KAISHA LTD (JP)
International Classes:
F23D14/24; F23C1/12; F23D17/00; F27B3/08; F27D3/16; F27D7/02
Domestic Patent References:
WO2009034626A12009-03-19
WO2015136609A12015-09-17
Foreign References:
JPS6312923B21988-03-23
US20120129111A12012-05-24
JP2005283029A2005-10-13
JP2004100967A2004-04-02
JPH0712314A1995-01-17
US20140004469A12014-01-02
EP2141413A12010-01-06
US5203692A1993-04-20
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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