作者：AKIRA YAMAGUCHI;

作者单位：Okayama Ceramics Research Foundation 1406-18, Nishi-Katakami, Bizen-shi, Okayama 705-0021, Japan

刊名：Journal of the Technical Association of Refractories

ISSN：0285-0028

出版年：2007-01-05

卷：27

期：3

起页：162

止页：168

分类号：TQ175

语种：英文

关键词：

内容简介

It is considered that the development of refractories has progressed roughly as shown in Fig. 1, from the viewpoint of composition. The first efforts by mankind to control and use fire probably involved a crucible or primitive furnace, which was made of natural minerals like clay, fireclay, silica-rich stone, alumina-silica, etc. Dolomite and magnesite brick, with MgO and CaO as the main components, were developed as refractories for steelmaking furnaces in Germany in the 1950's. Magnesia-chrome bricks were developed in the late 1950's in England. A drawback of magnesia bricks was the easy penetration of slag; this drawback was overcome by magnesia-chrome brick, which had improved corrosion resistance. Then, Cr_2O_3 refractories were introduced, and used because of their excellent corrosion resistance. Magnesia-chrome brick are now fired at 1800 - 1900 deg C, and the magnesia grains are bonded by chrome-rich spinel, which gives the refractory excellent hot strength and corrosion resistance. In the 1960's, electric-melted fused-cast brick of Al_2O_3-ZrO_2-SiO_2 and beta-Al_2O_3 type, which had excellent corrosion resistance, were developed as refractories for glass-melting furnaces. ZrO_2 was more recently introduced as a refractory material. In the 1980's, carbon-containing refractories, such as MgO-C and Al_2O_3-C were developed, and their usage rapidly increased.