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日本、苏联、英国、南非等国的钢铁企业普遍采用TiO_2物料护炉和补炉。即将一定量含TiO_2物料加入高炉内,炉料中的TiO_2还原并生成TiC和TiN等高熔点物质,附着在炉缸和炉底砖衬上,对保护炉缸炉底具有显著效果。近年来,我国也在推广这项技术。关于TiO_2物料添加方法,国内外炼铁厂多从炉顶装入,也有个别企业(日本神户钢铁公司)从
Iron and steel enterprises in Japan, the Soviet Union, the United Kingdom, South Africa and other countries generally use the TiO2 material furnace and furnace repair. That is to say, a certain amount of TiO 2 -containing material is added to the blast furnace to reduce the TiO 2 in the charge and generate high-melting-point substances such as TiC and TiN, which are adhered to the hearth and the bottom brick lining, thereby having a significant effect on the hearth bottom protection. In recent years, our country is also promoting this technology. About the method of adding TiO 2 materials, domestic and foreign iron mills are mostly loaded from the top of the furnace. There are also some enterprises (Kobe Steel, Japan)