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Patent Searching and Data


Title:
METHOD FOR PRODUCING MOLTEN IRON USING ELECTRIC FURNACE
Document Type and Number:
WIPO Patent Application WO/2016/120943
Kind Code:
A1
Abstract:
In the present invention, in a method in which iron scrap is melted in an electric furnace provided with an auxiliary burner to obtain molten iron, iron scrap is efficiently heated or melted using the auxiliary burner. When heating and melting the iron scrap inside the electric furnace by using the auxiliary burner, at least two types of fuel which have different ignition temperatures and/or combustion speeds are used as the fuel for the auxiliary burner. The ratio between the at least two types of fuel is changed in accordance with the distance between the auxiliary burner and the iron scrap which is to be heated and melted using the auxiliary burner. By utilizing the ratio between the at least two types of fuel, the length of the flame of the auxiliary burner can be freely adjusted, and the iron scrap can be efficiently heated or melted.

Inventors:
OZAWA, Sumito (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
ASANUMA, Minoru (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
MATSUNO, Hidetoshi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2015/006381
Publication Date:
August 04, 2016
Filing Date:
December 22, 2015
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
International Classes:
F27B3/22; C21C5/52; F23D17/00; F27D3/16
Foreign References:
JPS6141880A1986-02-28
JPH109524A1998-01-16
JP2012102911A2012-05-31
JPS54144329U1979-10-06
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JFE Techno-Research Corporation 6th Floor, JFE SHOJI Building, 7-1, Otemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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