DSpace university logo mark
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > 010 教育学部・教育学研究科 > 010 紀要 > 長崎大学教育学部自然科学研究報告 > 第33号 >


ファイル 記述 サイズフォーマット
kyoikuS33_107.pdf423.41 kBAdobe PDF本文ファイル

タイトル: 北朝鮮産カオリンのムライト生成に及ぼす鉱化剤の効果
その他のタイトル: The Effects of Several Mineralizers on the Mullitization of North Korea Kaolin at 1000℃ and 1150℃
著者: 小山田, 了三 / 前田, 英穂
著者(別表記) : Oyamada, Ryozo / Maeda, Hideo
発行日: 1982年 2月28日
出版者: 長崎大学教育学部
引用: 長崎大学教育学部自然科学研究報告. vol.33, p.107-114; 1982
抄録: The mechanism of mullite formation of a North Korea kaolin sample was studied in the presence of mineralizers. Kneadformed samples containing 20mol% of LiF, Li2CO3,MgF2 MgO, CuF2,and CuO were sintered at 1000℃ for 90 days and at 1150℃ for 1 days. The mullite formed was determined by an X-ray diffraction method. Mullite yield (%) amounted to 16.5 for Li2CO3, 18 LiF, 20.7 MgF2, 22.5 MgO, 27.7 CuF2 and 29.3 CuO, and 19.7 (10mol%) Li2 CO3, at 1000℃, and 16.5 for Li2CO3,19.5 LiF, 32.7 MgF2, 36.7 MgO, 52.0 CuF2, 57.3 CuO and 22.6 (10 mo1%) Li2CO3, at 1150℃, All rate curves obtained follow the Tammann equation, where the mullite yield increases linearly with log of time and reaches to a saturation αe at a time te. This rate equation does not coincide with those previously proposed, i . e. the pseudo-first order kinetics, the surface rate- and diffusion-determined reaction. Clearly the polarizability of cation and anion (Li : 0.03, Mg : 0.3, Cu :3.0 F :0.81 O : 3.0 (A3) of the added mineralizers have effect on the mullite yield. The larger the polarizability becomes, the more the mullite yield increases.
URI: http://hdl.handle.net/10069/32602
ISSN: 0386443X
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher

引用URI : http://hdl.handle.net/10069/32602



Valid XHTML 1.0! Copyright © 2006-2015 長崎大学附属図書館 - お問い合わせ Powerd by DSpace