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Journal of the Japan Institute of Energy Vol. 84 (2005), No. 11

ISIJ International
belloff
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753
Publisher: The Japan Institute of Energy

Backnumber

  1. Vol. 103 (2024)

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  2. Vol. 102 (2023)

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  5. Vol. 99 (2020)

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  6. Vol. 98 (2019)

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  7. Vol. 97 (2018)

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  8. Vol. 96 (2017)

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  9. Vol. 95 (2016)

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  10. Vol. 94 (2015)

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  11. Vol. 93 (2014)

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  12. Vol. 92 (2013)

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  13. Vol. 91 (2012)

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  14. Vol. 90 (2011)

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  15. Vol. 89 (2010)

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  16. Vol. 88 (2009)

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  17. Vol. 87 (2008)

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  18. Vol. 86 (2007)

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  19. Vol. 85 (2006)

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  20. Vol. 84 (2005)

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  21. Vol. 83 (2004)

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  22. Vol. 82 (2003)

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  23. Vol. 81 (2002)

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  24. Vol. 80 (2001)

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  25. Vol. 79 (2000)

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  26. Vol. 78 (1999)

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  27. Vol. 77 (1998)

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  28. Vol. 76 (1997)

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  29. Vol. 75 (1996)

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  30. Vol. 74 (1995)

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  31. Vol. 73 (1994)

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  32. Vol. 72 (1993)

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  33. Vol. 71 (1992)

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Journal of the Japan Institute of Energy Vol. 84 (2005), No. 11

The Effect of Hydrophilicity/hydrophobicity Ratio of Coal Surface on the Column Flotation Process

Yasushi SEKINE, Daisuke SATO, Daisuke YAMAGUCHI, Elichi KIKUCHI, Masahiko MATSUKATA

pp. 917-922

DOI:

10.3775/jie.84.917

Abstract

Continuous column flotation is one of an economical coal cleaning processes. In this study, we exam-ined the effect of hydrophilicity and hydrophobicitiy of coal surface on the continuous column flotation processes. We found that Wallarah coal was most suitable coal for the coal cleaning by the column flotation. From a static separation of film flotation, we found that the floatability of coal particle strongly depended on the hydrophilicity and hydrophobicity of coal surface. On the other hand, the trend of demineralization and the ratio of carbonaceous recovery could be predicted by the observation of methylene-blue adsorption test.

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Ris

Biomass Ethanol Production from Sugarcane for Energy Generation to Support Sugar Production

Satoshi OHARA, Yoshifumi TERAJIMA, Akira SUGIMOTO, Tatsuhiro HAYANO, Kunihiro UJIHARA, Masaki SAGEHASHI, Akiyoshi SAKODA

pp. 923-928

DOI:

10.3775/jie.84.923

Abstract

Competition for raw materials between sugar and ethanol usually occurs when biomass ethanol is produced from sugarcane. In order to overcome this critical problem, numerous studies have investigated the production of ethanol from two by-products of sugarcane: molasses and bagasse. However, there have been no previous attempts to improve the relevant properties of sugarcane, such as its growth rate, sugar content or fiber content.
The objective of the current work was to develop a novel system for high-yield biomass ethanol production to support existing methods of sugar production. A system for the simultaneous production of sugar and biomass ethanol was designed by employing selected sugarcane strains that were developed specifically for this process, including 95GA-24, 95GA-27 and NiTn18.
We ran productivity simulations using data from the novel sugarcane strains and compared the per-formance of the new process with that of conventional methods. Our results confirmed that sugar produc-tion could be maintained at present levels while three-times more biomass ethanol could be generated com-pared with the conventional processes. In addition, we demonstrated that a carbon-neutral process could be achieved using the new system.

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RDF Carbonization System and the Utilization of the Carbonized Product

Masao YUKUMOTO, Yasuyuki YAMAGUCHI

pp. 929-934

DOI:

10.3775/jie.84.929

Abstract

This paper introduces swinging-type waste carbonizing technology, and an energy saving process developed by combining a carbonizing system with refuse derived fuel (RDF) production from municipal waste. Applications of carbonized products are also reported. It is concluded that the carbonized products produced from RDF by this carbonizing system have uniform properties. Formaldehyde and other harmful organic substances are decomposed by the high temperature carbonizing treatment, and safe, high quality carbonized products are obtained. The JFE group is actively developing new applications of the carbonized products in various fields such as soil conditioners, adsorbents, coke substitute in iron making, and insulat-ing material.

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RDF Carbonization System and the Utilization of the Carbonized Product

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