METHOD FOR OPERATING MELTING-REFINING FURNACE AND MELTING-REFINING FURNACE

• Main Authors: KIYONO NAOKI, HAGIWARA YOSHIYUKI, YAMAMOTO YASUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• Subjects: BLASTING; CHEMISTRY; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OPEN SINTERING OR LIKE APPARATUS; OVENS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; RETORTS; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; WEAPONS

PROBLEM TO BE SOLVED: To provide a method for operating a melting-refining furnace, upon the operation of a melting-refining furnace for a cold iron source using oxygen burner(s)-lance(s), improving the efficiency.SOLUTION: Provided is a method for operating a melting-refining furnace where, in a furnace equipped with a through hole provided so as to pass through a furnace wall, one or more burners provided in the through hole and one or more lances installed in a combustion supporting fluid feed hole provided at the part upper than the through hole for a burner, operation is performed in such a manner that the introduction amount of oxygen lies in a range calculated from the volume of the furnace in a melting step.SELECTED DRAWING: Figure 1 【課題】酸素バーナ・ランスを用いた冷鉄源の溶解・精錬炉の操業あるいは精錬の際に、その効率を向上させることを課題とする。【解決手段】炉壁を貫通するように設けられた貫通孔と、貫通孔に設けられた１以上のバーナと、前記バーナ用の貫通孔より上部に設けられた支燃性流体供給孔に設置された１以上のランスとを備えた炉において、溶解工程において酸素の導入量を炉の容積から算出した範囲で操業する溶解・精錬炉の操業方法とする。【選択図】図１