Journal of the Fuel Society of Japan
Online ISSN : 2185-226X
Print ISSN : 0369-3775
ISSN-L : 0369-3775
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Volume 43, Issue 12
Displaying 1-13 of 13 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1964 Volume 43 Issue 12 Pages 797
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_797
    JOURNAL FREE ACCESS
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  • Development of the Cyclothems and the Coal Seams in the Ishikari Coalfield
    Michio Shibaoka
    1964 Volume 43 Issue 12 Pages 798-807
    Published: December 20, 1964
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.43.12_798
    JOURNAL FREE ACCESS
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  • Iron Sulfide Minerals of Miike Coal Field
    Iron Sulfide Minerals of Roofs, Floors and Partings. of Coal Seams (especially, of Hon-So)
    Yasuo Nakayanagi
    1964 Volume 43 Issue 12 Pages 808-820
    Published: December 20, 1964
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.43.12_808
    JOURNAL FREE ACCESS
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  • Studies on Chemical Constitution of Coal by Infra-red Spectra
    Shuya Fujii
    1964 Volume 43 Issue 12 Pages 821-836
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_821
    JOURNAL FREE ACCESS
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  • Study of the Structure of Pyridine Extracts from Coals by High Resolution Nuclear Magnetic Resonance Spectroscopy
    Gen Takeya, Mitsuomi Itoh, Akira Suzuki, Susumu Yokoyama
    1964 Volume 43 Issue 12 Pages 837-848
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_837
    JOURNAL FREE ACCESS
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    The present report deals with the constitution of the pyridine extracts of some Japanese coals, a study based upon their hydrogen distribution. The pyridine extracts of 6 Japanese coals were separated from the solvent, dried and redissolved into deutero-pyridine, C5D5N. The C5D5N solutions (approx. 10wt.%) of the coal extracts thus prepared were examined by high-resolution NMR spectroscopy at 60Mc. with a JNM-3H-60 NMR spectrometer.
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  • Derivatographic Studies of the Pyrolysis of Coal
    Mitsuo Makino, Yoshio Kawana
    1964 Volume 43 Issue 12 Pages 849-858
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_849
    JOURNAL FREE ACCESS
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    The effects of particle size, coal rank, heating rates and atmospheres, on the pyrolysis of several Japanese coals up to about 700°C have been obtained by the recording differential therm obalance reported earlier by us, and the derivatograms of coal samples above mentioned have been made by combining differential thermal analysis with-differential thermogravimetric analysis.
    The results indicate that
    (1) the bitumen formed by the chemical decomposition of coal plays a great important part in the caking phenomena of coal,
    (2) the first sharp exothermic peak appeared at 400-500°C in DTA curves of caking coals is due to the heat of polymerization reaction of the bitumen formed at relatively lower temperatures and the radicals formed at higher temperatures, and not due to the rapid change of thermal conductivity of samples as reported previously by Boyer et al., and
    (3) the second exothermic peak in DTA curves is due to the heat of aromatization and cross-linking of the polymerization products. In conclusion, the derivatographic investigation is one of the most powerful methods for the analysis of the pyrolysis of coal.
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  • Fundamental Research of Coking (III)
    A Thermal Experiment of Coal in High Frequency Coke Oven with Ultrasonic Sound Ryohei, Takahashi;Kenjiro, Takeshita
    [in Japanese], [in Japanese]
    1964 Volume 43 Issue 12 Pages 859-871
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_859
    JOURNAL FREE ACCESS
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    To produce the high quality coke from a coal, it is generally said that the coal must contain a proper amount of swelling-, coking-, and caking-component.
    Depletion of reserves of coal seams considered as the best coking coals and continuous requirements of modern blast furnace practice make improvement, on this account, not only on the blending techniques to make raw material having suitable component for good coke, but also on the techniques of coking procedure.
    Based on our recent microscopic investigation with regard to the thermal behaviours of coal during carbonization, it has been clarified that one of the most important character of coke, the strength, is greatly influenced by the thickness of walls and the size and distribution of pores, which are mostly completed by the temperature of 600°C, and not always by chemical compositions of coal.
    Accordingly, if the suitable assemblage of pore and wall during the process of carbonization is realized by any proper method, the coke of good nature may be obtained.
    As one of these possible ways, an specially constructed oven is used, in which coal is heated by high frequency electric wave.
    As well known, the coal of plastic state is given a sort of sound wave by this electric wave though it is very slight. Therefore, we have tried to accelerate the sound motion in the coal using ultrasonic wave, which is introduced through graphite conical horn.
    In this paper the procedure and the results obtained under the microscope are commented in detail.
    However, since the experiment has not been finished with a satisfactory result, further studies are needed using several kinds of coal until more sufficient results are obtained.
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  • [title in Japanese]
    1964 Volume 43 Issue 12 Pages 872-873
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_872
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1964 Volume 43 Issue 12 Pages 873-874
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_873
    JOURNAL FREE ACCESS
    Download PDF (338K)
  • [title in Japanese]
    1964 Volume 43 Issue 12 Pages 874-875
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_874
    JOURNAL FREE ACCESS
    Download PDF (324K)
  • [title in Japanese]
    1964 Volume 43 Issue 12 Pages 875
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_875
    JOURNAL FREE ACCESS
    Download PDF (157K)
  • [title in Japanese]
    1964 Volume 43 Issue 12 Pages 876-881
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_876
    JOURNAL FREE ACCESS
    Download PDF (915K)
  • [title in Japanese]
    1964 Volume 43 Issue 12 Pages 881-888
    Published: December 20, 1964
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.43.12_881
    JOURNAL FREE ACCESS
    Download PDF (866K)
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