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 (JP)
Application Number:
PCT/JP2010/058201
Publication Date:
November 18, 2010
Filing Date:
May 14, 2010
Export Citation:
Assignee:
ISTC CO LTD (JP)
HIRAOKA TERUYOSHI (JP)
HIRAOKA TERUYOSHI (JP)
International Classes:
C21C5/52; F27B3/20; F27D3/16
Foreign References:
| JPS6274019A | 1987-04-04 | |||
| JPS63100119A | 1988-05-02 | |||
| JP2005090865A | 2005-04-07 |
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
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