Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2006, Vol. 27 ›› Issue (1): 45-48.DOI: -

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Experimental study on capability of blast furnace slag containing alkali

Wang, Cheng-Li (1); Lu, Qing (2); Gu, Lin-Na (3); Li, Fu-Min (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) School of Metallurgy and Energy Resources, Hebei Polytechnic University, Tangshan 063009, China; (3) Guangzhou Iron and Steel Group Co. Ltd., Guangzhou 510381, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-01-15 Published:2013-06-23
  • Contact: Wang, C.-L.
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Abstract: The blast furnace slag of Guangzhou Iron and Steel Co. Ltd. contains alkali and TiO2. The viscosity, smelting temperature, desulphurizing capability of the slag were studied. The results revealed that the viscosity and smelting temperature are both lower than normal slag. Alkali has evident influence on the smelting characteristics of acidic slag. When the basicity increases, the influence decreases. Both the relationships between the characteristics of alkali-containing slag and its MgO content and Al2O3 content are almost the same to those between normal slag and them. Basicity has evident influence on desulphurizing capability of slag containing alkali. To acquire the suitable viscosity and smelting temperature and high desulphurizing capability under practical conditions, the slag composition should be kept in such a suitable range that K2O + Na2O is less than 0.9%, CaO/SiO2 0.96-1.06, Al2O3 less than 14%, and MgO 12%-15%.

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