OPERATION OF VERTICAL TYPE SCRAP MELTING FURNACE

• Main Authors: IIJIMA HIROMASA, TAKEUCHI HIDEJI, BESSHO NAGAYASU
• Format: Patent
• Language: English
• Published: 30.09.1997
• Edition: 6
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

PROBLEM TO BE SOLVED: To drastically improve the energy efficiency, i.e., to remarkably reduce the requirement unit of coke by effectively reducing solution loss at the time of melting operation of scrap. SOLUTION: In the operation of a vertical type scrap melting furnace 1, a carbonaceous material 3 whose surface is coated with a material which is difficult to be oxidized with high temp. CO2 and H2 O and, on the other hand, material covered with such a substance which is lost by combustion, vaporizing, melting, etc., is used at the lower part of the vertical furnace 1. The charging of at least the scrap 2 in the charging raw materials is continuously executed from the furnace top part to the furnace lower part of the vertical furnace 1.