| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively utilize the slag containing a lot of CaO and Al<SB>2</SB>O<SB>3</SB>as a raw material for alumina cement and to provide a monolithic refractory using the alumina cement and exhibiting equal properties to those of conventional products. <P>SOLUTION: The alumina cement is manufactured from the slag containing one or more kinds of minerals selected from among CaO-Al<SB>2</SB>O<SB>3</SB>, CaO-2Al<SB>2</SB>O<SB>3</SB>, 12CaO-7Al<SB>2</SB>O<SB>3</SB>and an amorphous material of 60 mass% or more and a CaO source and/or an Al<SB>2</SB>O<SB>3</SB>source as raw materials. The alumina cement is characterized by using the slag containing one or more kinds of minerals selected from among CaO-Al<SB>2</SB>O<SB>3</SB>, CaO-2Al<SB>2</SB>O<SB>3</SB>, 12CaO-7Al<SB>2</SB>O<SB>3</SB>and the amorphous material of 60 mass% or more and containing MgO-Al<SB>2</SB>O<SB>3</SB>and/or MgO of 30 mass% or less as a raw material. The monolithic refractory contains the alumina cement and a fire-resistant aggregate. <P>COPYRIGHT: (C)2009,JPO&INPIT |
