The main component of slag of blast furnace,its harm to environment are introduced,the application of slag in Xuan Steel introduced,some suggestions for its comprehensive application proposed.

• 分析了宣钢高炉渣的主要成分、对环境的危害,介绍了宣钢高炉渣的应用现状,提出了高炉渣综合利用的建议。