Formation of High-Purity Silica Ashes Prepared from Rice Husks
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概要
- 論文の詳細を見る
High-purity silica was obtained from rice husks by washing with water and acid or alkaline solutions. The silica was characterized by means of chemical analysis, ICP-MS, TG-DTA and SEM. The following results were obtained. (1) The silica ashes with 99.7% purity was obtained by washing rice husks with water and acid solutions. (2) The contents of radioactive impurities such as Th and U were decreased after washing with acid solutions. (3) The density, median diameter and specific surface area of the silica ashes were 2.15∿2.19×10^3kg/m^3,26∿36μm and 255∿300×10^3m^2/kg, respectively. (4) Obtained high purity silica was not crystallized by firing at 1200℃. These results proved that the silica ashes prepared from rice husks is a promising raw material for silicon wafers.
- 東海大学の論文
著者
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MATSUSHITA Jun-ichi
Department of Applied Chemistry, School of Engineering, Tokai University
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Matsushita Jun-ichi
Department Of Applied Chemistry School Of Engineering Tokai University
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KATAYAMA KEIICHI
Department of Industrial Chemistry, Faculty of Engineering, Tokai University
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AZUMA YASUO
Department of Industrial Chemistry, Faculty of Engineering, Tokai University
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Azuma Yasuo
Department Of Industrial Chemistry
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Azuma Yasuo
Department Of Applied Chemistry Tokai University
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Higuchi Masashi
Course Of Industrial Chemistry
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NAKAMURA Masayuki
Toho Aen Co., Ltd.
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Katayama Keiichi
Department Of Applied Chemistry Tokai University
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Matsushita Jun-ichi
Department Of Industrial Chemistry
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Nakamura Masayuki
Toho Aen Co. Ltd.
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