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首页> 外文期刊>ISIJ international >Hot Metal Desulfurization Kinetics by CaO–Al2O3–SiO2–MgO–TiO2–Na2O Slags
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Hot Metal Desulfurization Kinetics by CaO–Al2O3–SiO2–MgO–TiO2–Na2O Slags

机译：CaO–Al 2 O 3 –SiO 2 –MgO–TiO 2 –Na <的铁水脱硫动力学sub> 2 O渣

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摘要

Hot metal Desulfurization kinetics were studied experimentally using CaO–Al_(2)O_(3)–SiO_(2)–MgO–TiO_(2)–Na_(2)O slags in the range of 1773 K to 1833 K. The results indicated that the rate of desulfurization increases with the Na_(2)O and MgO content in slag increase, the slag basicity increase, i.e. , the ratio of CaO to SiO_(2), Al_(2)O_(3) and TiO_(2) content decrease, and the temperature increase. A mathematical model of desulfurization kinetics has been developed, using which the calculated results of the desulfurization of hot metal are in reasonable accord with the experimental data. The activation energy of the apparent rate coefficient was found to be 172.58 kJmol~(?1), and the mass transfer coefficient of the slag phase hardly changes with temperature. All of these showed that the desulfurization of hot metal using the present slag system is controlled by the slag phase mass transfer.
机译：使用CaO–Al_（2）O_（3）–SiO_（2）–MgO–TiO_（2）–Na_（2）O炉渣在1773 K至1833 K范围内进行了实验研究，研究了铁水的脱硫动力学。结果表明脱硫率随炉渣中Na_（2）O和MgO含量的增加而增加，炉渣碱度增加，即，CaO与SiO_（2），Al_（2）O_（3）和TiO_（2）的比例降低，并且温度升高。建立了脱硫动力学数学模型，利用该模型可以计算出铁水脱硫结果与实验数据吻合。表观速率系数的活化能为172.58 kJmol〜（？1），炉渣相的传质系数几乎不随温度变化。所有这些表明，使用本发明的渣系统的铁水的脱硫是受渣相传质控制的。

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