Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1980-11-07
1983-04-05
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
266 44, 266 92, 324 585B, C21B 500
Patent
active
043789935
ABSTRACT:
A desired number of cables are drawn, along with the falling charge, into a blast furnace from its top and the forward ends of the cables are melted upon reaching the melting zone in the furnace. The length of each of the cables to its melted end is measured in accordance with the result of a voltage pulse response measurement utilizing the distributed constant circuit characteristics of the cable, and the height level of the melting zone inside the furnace is measured from the cable length by correcting it for the amount of deflection of the cable within the furnace. By measuring the cable length at each of a plurality of radial locations of the furnace, it is possible to estimate the three-dimensional shape of the upper boundary of the melting zone with a high degree of accuracy.
REFERENCES:
patent: 4094494 (1978-06-01), Mahr
patent: 4269397 (1981-05-01), Strimple et al.
Fukushima Tsutomu
Furukawa Takeshi
Kobayashi Takashi
Saito Shin-ichi
Yamada Takeo
Andrews M. J.
Nippon Kokan Kabushiki Kaisha
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