MOLTEN METAL SENSING METHOD FOR BASE METAL IN ELECTRIC ASH MELTING FURNACE

Japanese Patent JP3585344

B2

PROBLEM TO BE SOLVED: To perform an accurate sensing of an amount of base metal.
SOLUTION: A plasma torch 15A is lowered, immersed into a base metal 4, its lower end is abutted against a bottom part 3a of a furnace, a height of the plasma torch 15A at this time is detected, the plasma torch 15A is ascended while a potential between the plasma torch 15A and the base metal 4 is being detected, a variation of the potential between the plasma torch 15A and the base metal 4 when the plasma torch 15A is pulled out of the base metal 4 into molten slag FS is detected to cause it to become a molten metal surface position of the base metal, an ascending distance of the plasma torch 15A from the bottom wall 3a up to the molten metal surface position and then a molten metal surface level of the base metal 4 is detected. The bottom wall part having no corrosion or variation is set to be a reference level to enable even an electrode consumed by electrical discharging or the like to detect an accurate molten metal surface level.

JPH1085702	HEAT TREATMENT DEVICE
WO/2011/092906	SOLID FUEL

Kohei Hamabe
Hideo Sato
Sakata Ryoro
Kunio Sasaki
Kazunori Nakamura
Hiroshi Kosaka

JP14283697A

November 04, 2004

June 02, 1997

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Hitachi Zosen Corporation

B09B3/00; F23J1/00; F23J1/08; F27B3/28; F27D21/00; H05B7/148; G01F23/24; (IPC1-7): F27B3/28; B09B3/00; F23J1/00; F23J1/08; F27D21/00; G01F23/24; H05B7/148

JP6194210A
JP8320111A

Yoshihiro Morimoto

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