Probing the inner structure of blast furnaces by cosmic-ray muon radiography

Kanetada Nagamine, Hiroyuki K.M. Tanaka, Satoshi N. Nakamura, Katsuhiko Ishida, Misao Hashimoto, Akihiko Shinotake, Masaaki Naito, Asao Hatanaka

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


By using the detection system of the near-horizontal cosmic-ray radiography originally developed for probing inner structure of volcanic mountains, a measurement was conducted to probe the inner structure and its time-dependent change of the blast furnace for iron-making. Precise determination (± 5 cm) of the thickness of brick used for both base-plate and side-wall was made in 45 days; a crucial information to predict a life-time of the furnace. Also, the local density of iron-rich part was determined in ± 0.2 g/cm2 in 45 days; static structure as well as time-dependent behavior can be monitored for the iron-rich part of the furnace during operation.

Original languageEnglish
Pages (from-to)257-260
Number of pages4
JournalProceedings of the Japan Academy Series B: Physical and Biological Sciences
Issue number7
Publication statusPublished - 2005 Sept


  • Cosmic-ray
  • Industrial machinery
  • Muon
  • Radiography

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Physics and Astronomy(all)


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