SHAPED REFRACTORY FOR LINING INDUCTION FURNACE AND CONSTRUCTION METHOD OF INDUCTION FURNACE USING LINING SHAPED REFRACTORY

To provide a shaped refractory which may facilitate lining work when used for lining of an induction furnace and may form a lining layer having a long and stable service life.SOLUTION: A main raw material of a lining shaped refractory includes a coarse particle material composed of fused quartz, a c...

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Bibliographische Detailangaben
Hauptverfasser: ARIGA KIKUO, KUDO SHIGEKI, OGISO YUYA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a shaped refractory which may facilitate lining work when used for lining of an induction furnace and may form a lining layer having a long and stable service life.SOLUTION: A main raw material of a lining shaped refractory includes a coarse particle material composed of fused quartz, a coarse particle material composed of magnesia, a coarse particle material composed of alumina, a medium particle material composed of magnesia, a medium particle material composed of alumina, a fine particle material composed of magnesia and a fine particle material composed of alumina. A content of the magnesia materials is controlled to 35 mass% or more and less than 65 mass%, a content of the alumina materials is controlled to 20 mass% or more and less than 50 mass%, and a content of the fused quartz material is controlled to 5 mass% or more and less than 30 mass%.SELECTED DRAWING: None 【課題】電気式誘導炉の内張りに用いた場合に内張り作業を容易なものとすることができる上、安定した高い耐用寿命を有する内張層を形成可能な定形耐火物を提供する。【解決手段】内張用定形耐火物の主原料は、溶融石英質からなる粗粒子材、マグネシア質材からなる粗粒子材、アルミナ質材からなる粗粒子材、マグネシア質材からなる中粒子材、アルミナ質材からなる中粒子材、マグネシア質材からなる微粒子材およびアルミナ質材からなる微粒子材を含有しており、マグネシア質材の含有量が35質量%以上65質量%未満に調整されており、アルミナ質材の含有量が20質量%以上50質量%未満に調整されており、溶融石英質材の含有量が5質量%以上30質量%未満に調整されている。【選択図】なし