Title:
METHOD FOR PRODUCING MOLTEN IRON USING ELECTRIC FURNACE PROVIDED WITH VIDEO DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/172769
Kind Code:
A1
Abstract:
The present invention increases molten iron temperature increase efficiency to reduce manufacturing cost. The present invention provides a method for producing molten iron using an electric furnace that comprises a preheating chamber, a melting chamber, a cold iron source supporting device capable of dividing the preheating chamber into first and second preheating chambers, an extruder, and a video device capable of observing the inside of the second preheating chamber, the method having a melting step, a temperature increasing step, a preheating step, and a tapping step, and temperature increasing of the molten iron being started in the temperature increasing step on the basis of visual information obtained from the video device from the inside of the second preheating chamber after closing of the cold iron source support device.
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Inventors:
MIWA YOSHIHIRO (JP)
TSUTSUMI KOICHI (JP)
OKUYAMA GORO (JP)
TSUTSUMI KOICHI (JP)
OKUYAMA GORO (JP)
Application Number:
PCT/JP2022/003173
Publication Date:
August 18, 2022
Filing Date:
January 27, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21C5/52; F27B1/20; F27B1/28; F27D17/00
Foreign References:
| JP2002538295A | 2002-11-12 | |||
| JP2003049217A | 2003-02-21 | |||
| CN205690871U | 2016-11-16 | |||
| JP2012180560A | 2012-09-20 | |||
| JPH10292990A | 1998-11-04 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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