Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2007, Vol. 28 ›› Issue (11): 1590-1593.DOI: -

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Experimental investigation on dealkalization and desulphurization of alkaliferous BF slag

Lu, Qing (1); Li, Fu-Min (1); Gu, Lin-Na (3); Hou, Da-Hua (3)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) School of Metallurgy and Energy, Hebei Polytechnic University, Tangshan 063009, China; (3) Guangzhou Iron and Steel Group Co. Ltd., Guangzhou 510381, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-11-15 Published:2013-06-24
  • Contact: Lu, Q.
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Abstract: Investigates experimentally the relationship between dealkalization and desulphurization of alkaliferous BF slag. The influences of w (CaO)/w (SiO2), w (MgO) and w (Al2O3) on the two removabilities are studied according to the actual BF slag composition of GuangSteel. The results reveal that w (CaO)/w (SiO2) has great influence on both the two removabilities and they contradict each other. The dealkalizing rate falls with rising w (MgO), and the w (MgO) corresponding to best desulphurizing rate on alkaliferour slag is 3% lower than on normal slag. The change of dealkalizing rate is little but the desulphurizing rate decreases rapidly with rising w (Al2O3). For the sample slag appropriate composition is that the w (CaO)/w (SiO2) shall be kept 1.0, with w (MgO) 12% and w (Al2O3) 15%.

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