Journal of the Fuel Society of Japan
Online ISSN : 2185-226X
Print ISSN : 0369-3775
ISSN-L : 0369-3775
Volume 60, Issue 4
Displaying 1-7 of 7 articles from this issue
  • [in Japanese]
    1981 Volume 60 Issue 4 Pages 203
    Published: April 20, 1981
    Released on J-STAGE: June 28, 2010
    JOURNAL FREE ACCESS
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  • Akira CHIMURA
    1981 Volume 60 Issue 4 Pages 204-223
    Published: April 20, 1981
    Released on J-STAGE: June 28, 2010
    JOURNAL FREE ACCESS
    1.The Outlook for the Expanded Use of Steam Coal
    1) The strong demand for steam coal exists now and will continue to exist in 1980's.Its import requirements are expected to increase to 20 million tons in F.Y.1985 and 47 million tons in F.Y. 1990.
    2) However, many steam coal consumers are facing the difficulties in obtaining the re-quired steam coal supply, under the tight conditions of steam coal supply & demand which are expected to continue for some coming years.
    2.The Establishment of Coal Chains
    1) The establishment of coal chains from coal mines to steam coal consumers is urgently needed, in order to meet the sharp increase of steam coal demand.
    2) We should make a great effort to expand the production and shipping capacities in coal producing countries and to complete the transportation system such as sea-going and coastal ships and coal centers in Japan.
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  • Hisao MASUYAMA
    1981 Volume 60 Issue 4 Pages 224-236
    Published: April 20, 1981
    Released on J-STAGE: June 28, 2010
    JOURNAL FREE ACCESS
    In anticipation for an increasing demand for Japan's steaming coal, Australian coal resources are very attractive for Japanese coal end-users because they are abundantly endowed, situated in better mining conditions and located in a closer proximity to Japan.
    In Australia, coal has been produced mainly from the state of New South Wales in the south, but a large scale steaming coal production will be invitable to shift to the state of Queensland in the north, mainly due to Queensland's abundant endowment of coal, better mining conditions and advantageous transportation capability (especially coal export facilities).
    Speaking of development of coal resources in Queensland, it is necessary for sponsoring companies to undertake all coal chains from exploration of coal to construction of infrastruc-tures as a package on their own.To ensure economic profitability, it is needless to say that economy of scale must be excercised and that accordingly the corresponding large market is a key factor for coal projects to become feasible.
    And speaking of technical problems of coal specification from Queensland, it is needed for us to develop technology to burn such lower quality coals as low volatile, low caloric: value, higher ash content and lower grindability.
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  • Ryohei TAKAHASHI
    1981 Volume 60 Issue 4 Pages 237-252
    Published: April 20, 1981
    Released on J-STAGE: June 28, 2010
    JOURNAL FREE ACCESS
    Since the founding of the Republic China, a lot of coal mine has been constructed, and also innovations and reformations have been carried out in the existing major and minor coal mines.Through these great efforts the annual production have been raised.from 32.4 million tons in 1949 to 600 million tons in 1978, and ranked“the third”in the world.
    In order to produce 1, 000 million tons in the coming decade, however, construction of new coal mines and modernization as well as rationalization of the operative mines have been remarkably promoted.And to attain this object, Japan has been asked to co-operate for the development of several mines.
    In this paper, the geology and chemical-petrological nature of coals contained in such mines are commented, with brief notes on exploitation plan for respective mine.
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  • HeWu Dai, [in Japanese], [in Japanese]
    1981 Volume 60 Issue 4 Pages 253-258
    Published: April 20, 1981
    Released on J-STAGE: June 28, 2010
    JOURNAL FREE ACCESS
    In this paper the development of coal liquefaction technique, liquefac-tion methods, mechanism and requirement of raw material selection are introduced.Analysis of coal resources in China suitable for liquefaction is given.And the importance of coal liquefaction research in the area of coal resources utilization is also described
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  • Masahiro YOSHIDA, Yoshiaki SHITAKA
    1981 Volume 60 Issue 4 Pages 259-274
    Published: April 20, 1981
    Released on J-STAGE: June 28, 2010
    JOURNAL FREE ACCESS
    The trend of coal liquifaction process developments, especially SRC-I, SRC-II, EDS and H-coal, is described.It should be noted that the process is being improved for producing light distillate and middle distillate at 5-7 % hydrogenation, which can allow ash-rich vacuum residue of coal liquid to be handled as slurry.
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  • Kenji MORI, Jiro ITO
    1981 Volume 60 Issue 4 Pages 275-295
    Published: April 20, 1981
    Released on J-STAGE: October 21, 2011
    JOURNAL FREE ACCESS
    Resources, characteristics and uses of brown coal are reviewed.Resources of brown coal are predominant in Germany, north middle America, south east Australia (State of Victoria) etc.and occupy about 23% of world total coal resources.
    Brown coal is considared as low quality coal because of its low heating value, high water and oxygen contents. But low cost and high chemical reactivity of brown coal present attractive applications at special conditions and regions.
    Chemical and physical properties of brown coal are also described.
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