RH-TOBプロセスにおけるダイレクトボンドマグクロれんがの損傷機構
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概要
- 論文の詳細を見る
In order to elucidate the wear mechanism of direct-bonded magnesia-chrome ore refractories in RH-TOB (RH-Top Oxygen Blowing), crucibles were made from the MgO-Cr_2O_3 refractory, which are used as a side wall refractory material for the RH-TOB lower vessels. The crucibles were charged with melting stock to carry out the oxygen blowing experimental at 1650℃. Experiment was discriminated the wear by FeO permeation and the wear by Fe fume. The chromite in the MgO-Cr_2O_3 refractory creates a complex spinel of a high melting point with FeO, therefore chromite is stable and shows a high corrosion resistance on FeO. On the other hand, FeO that has a very low melting point permeates magnesia that are composed of fine particles combined by silicate bonds. Consequently, an eutectic reaction causes the bond melts and separating the particles. The wear during the RH-TOB process results from the oxidation heat that is produced when the Fe fumes react with oxygen and impact the refractory dissolve away both magnesia and chromite.
- 社団法人日本セラミックス協会の論文
- 2005-06-01
著者
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Kim Sung
Division Of Gynecologic Oncology Department Of Obstetrics And Gynecology Yonsei University College O
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Kim Sung
Division Of Materials Science & Engineering Hanyang University
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Lee Kyung
Division Of Materials Science And Engineering Hanyang University
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Kim Dong
Division Of Electronic And Electrical Engineering Kyungnam University
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Park Jong
Technical Research Laboratories Posco
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Yoo Suk
Division Of Materials Science & Engineering Hanyang University
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HA Chang
Technical Research Laboratories, POSCO
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Ha Chang
Technical Research Laboratories Posco
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Lee Kyung
Division Of Materials Science & Engineering Hanyang University
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Kim Dong
Division Of Materials Science & Engineering Hanyang University
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Kim Sung
Division Of Epidemiology And Health Index Center For Genome Science Korea Centers For Disease Control And Prevention
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KIM Sung
Division of Enteric Bacterial Infection, Center for Infectious Disease, National Institute of Health
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Park Jong
Technical R&D Center, Semi-Materials Co., Ltd., Yeongcheon, Gyeongbuk 770-803, Republic of Korea
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