Title:
アーク炉の溶解状態判定装置
Document Type and Number:
Japanese Patent JP5743923
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To avoid wasteful power consumption and the like by surely determining completion of dissolution of scrap.SOLUTION: A dissolution state determination device of an arc furnace includes a noise meter 71 detecting noise generated in the arc furnace and outputting a sound signal 71a corresponding to intensity of detected sound, a frequency analyzing device 72 analyzing a frequency of the sound signal 71a and obtaining a frequency-intensity signal 72a, and a control device 4 determining the completion of dissolution when a state that at least a part of signal component of the frequency-intensity signal 72a is included in a first detection region, in the first detection region set in a region centered on a frequency of an even multiple of basic frequency, within a prescribed signal intensity range, and all of signal components of the frequency-intensity signal 72a are included in second and third detection regions in the second and third detection regions respectively set in prescribed signal intensity ranges in frequency regions at a low frequency side and high frequency side with respect to the frequency of the even multiple, is kept for a prescribed time or more.
Inventors:
Kota Mizutani
Takahiro Ohashi
Mitsuhiko Sato
Shoji Kitabayashi
Kameshima Takatoshi
Hitomi Takamiya
Shoji Sasaki
Takahiro Ohashi
Mitsuhiko Sato
Shoji Kitabayashi
Kameshima Takatoshi
Hitomi Takamiya
Shoji Sasaki
Application Number:
JP2012034809A
Publication Date:
July 01, 2015
Filing Date:
February 21, 2012
Export Citation:
Assignee:
Daido Steel Co., Ltd.
Godo Steel Co., Ltd.
Godo Steel Co., Ltd.
International Classes:
F27B3/28; C21C5/52; F27B3/08; F27D21/00
Domestic Patent References:
| JP11083330A | ||||
| JP2101381A | ||||
| JP59205189A |
Attorney, Agent or Firm:
Kenichi Morita