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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 (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 〒1000011, JP)
MIWA Yoshihiro (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 〒1000011, JP)
OZAWA Sumito (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 〒1000011, JP)
SUMI Ikuhiro (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 〒1000011, JP)
TOMOZAWA Kenichi (3-6-1 Hiranomach, Chuo-ku Osakashi Osaka 46, 〒5410046, JP)
ITO Takayuki (3-6-1 Hiranomach, Chuo-ku Osakashi Osaka 46, 〒5410046, JP)
Application Number:
JP2017/026715
Publication Date:
February 01, 2018
Filing Date:
July 24, 2017
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
CHUGAI RO CO., LTD. (3-6-1, Hiranomachi Chuo-k, Osakashi Osaka 46, 〒5410046, JP)
International Classes:
F23D14/24; F23C1/12; F23D17/00; F27B3/08; F27D3/16; F27D7/02
Attorney, Agent or Firm:
SUGIMURA Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigasek, Chiyoda-ku Tokyo 13, 〒1000013, JP)
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