Investigation of Waste Wood as a Blast Furnace Injectant

National legislation within Japan has increased the need for the development of new process technologies that will utilize waste wood materials. In order to generate some fundamental data with respect to the possible injection of such materials into blast furnaces, a study has been made of the decom...

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Bibliographic Details
Published in:Steel research international 2003-06, Vol.74 (6), p.347-350
Main Authors: Takekawa, M., Wakimoto, K., Matsu‐ura, M., Hasegawa, M., Iwase, M., McLean, A.
Format: Article
Language:English
Subjects:
Applied sciences
Biomass
Blast furnaces
Combustion
Decomposition reactions
Exact sciences and technology
Gasification
Iron and steel making
Ironmaking in blast furnace
Legislation
Metals. Metallurgy
Production of metals
Wastes
Wood
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Summary:National legislation within Japan has increased the need for the development of new process technologies that will utilize waste wood materials. In order to generate some fundamental data with respect to the possible injection of such materials into blast furnaces, a study has been made of the decomposition and gasification reactions that take place when biomass material, in this case Japanese cypress chips, are exposed to temperatures between 1673 and 2073K using a high frequency induction furnace. The relative amounts of gas, char and tar were determined as well as the concentration of the various species present in the gas phase. The results obtained from gas analysis were in good agreement with values calculated from thermodynamic equilibria. Die nationale Gesetzgebung in Japan hat die Erfordernis verstärkt, neue Technologien zu entwickeln, die Holzabfallstoffe verwerten. Um grundlegende Daten im Hinblick auf ein mögliches Einblasen solcher Stoffe in den Hochofen zu gewinnen, wurde eine Untersuchung über die Zerfalls‐ und Gasbildungsreaktionen durchgeführt, die stattfinden, wenn Biomasse, in diesem Fall Abfall aus japanischen Zypressen, in einem Hochfrequenz‐Induktionsofen Temperaturen zwischen 1673 und 2073 K ausgesetzt wird. Es wurden die relativen Mengen an Gas, Schwelkoks und Teer und die Konzentration der verschiedenen Gaskomponenten bestimmt. Die Ergebnisse aus der Gasanalyse stimmten gut mit Werten, die aus dem thermodynamischen Gleichgewicht berechnet wurden, überein.
ISSN:1611-3683
1869-344X
DOI:10.1002/srin.200300196