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| THE INVESTIGATION OF EQUILIBRIUM BETWEEN SLAG AND HOT METAL CONTAINING Nb AND MEASUREMENT OF αNb_2O_5 IN THE SLAG |
| by CHEN Weiqing; ZHOU Rongzhang; LIN Zongcai (Beijing University of Iron and Steel Technology) (Manuscript received 6 June; 1986; revised manuscript 6 October; 1986) |
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Cite this article:
by CHEN Weiqing; ZHOU Rongzhang; LIN Zongcai (Beijing University of Iron and Steel Technology) (Manuscript received 6 June; 1986; revised manuscript 6 October; 1986). THE INVESTIGATION OF EQUILIBRIUM BETWEEN SLAG AND HOT METAL CONTAINING Nb AND MEASUREMENT OF αNb_2O_5 IN THE SLAG. Acta Metall Sin, 1987, 23(6): 560-567.
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Abstract The reaction equilibrium between slag-hot metal containing Nb at temperature of hot metal pretreatment was investigated. Hot metal and slag containing Nb_2O_5 from Baotou was used. Meanwhile, a_([O] in molten iron was measured by means of the elctrolyte oxygen cell technique for calculating a_(Nb_2O_5) in slag. It was shown that when [Si]>0.02％ and SiO_2/MnO<2,at the equilibrium state between slag-hot metal the selective removal of [Si] over [Nb] from Baotou hot metal is quite possible. The range of γ_(Nb_2O_5) values is 10°—10~(-2) at 1350℃. SiO_2/MnO of slag effects considerably on distribution ratio of Nb between slag-hot metal and on γ_(Nb_2O_5).
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Received: 18 June 1987
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