Title:
ELECTRIC FURNACE STEEL-MAKING PROCESS
Document Type and Number:
WIPO Patent Application WO/2010/131742
Kind Code:
A1
Abstract:
Provided is a steel-making process that drastically improves the disadvantages of conventional electric furnaces. The electric furnace steel-making process uses an arc-type electric furnace and comprises steps of: (1) putting scrap iron into the arc-type electric furnace and inserting a movable electrode into the electric furnace; (2) lowering the electrode while conducting electric current to the electrode and melting the scrap iron, and forming a boring hole into the scrap iron; and (3) pulling out the electrode from inside the electric furnace, inserting a metal tube burner lance into the boring hole, and spraying a mixed gas consisting of a fuel gas and a supporting gas from the metal tube burner lance.
Inventors:
HIRAOKA, Teruyoshi (1-3-10-701, Chimori-cho Suma-ku, Kobe-sh, Hyogo 72, 〒6540072, JP)
Application Number:
JP2010/058201
Publication Date:
November 18, 2010
Filing Date:
May 14, 2010
Export Citation:
Assignee:
ISTC CO., LTD. (2-3 Higashitojikawara-cho, Ichijyoji Sakyo-ku, Kyoto-sh, Kyoto 22, 〒6068122, JP)
株式会社ＩＳＴＣ (〒22 京都府京都市左京区一乗寺東閉川原町２番地３ Kyoto, 〒6068122, JP)
株式会社ＩＳＴＣ (〒22 京都府京都市左京区一乗寺東閉川原町２番地３ Kyoto, 〒6068122, JP)
International Classes:
C21C5/52; F27B3/20; F27D3/16
Attorney, Agent or Firm:
Saegusa & Partners (Kitahama TNK Building, 1-7-1 Doshomachi, Chuo-ku, Osaka-sh, Osaka 45, 〒5410045, JP)
Claims: