Sulfur Partitions between Carbon-saturated Iron Melt and Na2O-SiO2 Slags
Sulfur Partitions between Carbon-saturated Iron Melt and Na2O-SiO2 Slags
复制标题
碳饱和铁熔体与Na2O-SiO2渣之间的硫分配
DOI：
--
复制
发表时间：
1982
期刊：
影响因子：
--
通讯作者：
H. Suito
中科院分区：
文献类型：
--
作者：
R. Inoue;H. Suito
在1250和1350 °C下测定了硫在碳饱和铁液与Na 2 O/SiO2摩尔比为3/2，1/1，2/3和1/3的Na 2 O-SiO2渣系之间的分配。由硫分配计算的硫化物容量C ′ S [=（wt%S）·（aO/aS）]在10-2 ~ 10-4范围内，未观察到温度依赖性。这些值低于从高于Na 2 O/SiO2=0.5-0.7的气体-炉渣平衡研究获得的先前测量值，但高于在低于该比率的炉渣组成下的先前测量值。在1250 °C下，测定了硫在碳饱和铁熔体和Na 2 O-CaO-SiO2熔体之间的分配。在log（S）/[S]与（Na 2 O +mCaO）/SiO2比的曲线图中比较石灰对硫分布的影响与Na 2 O的影响，从而得到m=0.3。平衡后，在渣相中观察到显著量的铁，并且发现在Na 2 O/SiO2摩尔比为0.9的组合物下，作为FeS的硫对渣中总硫的比率最大。在1300 °C下，研究了NaCl与CaC 2反应生成的钠蒸气对碳饱和铁液（0.1%P，0.05%S）的脱硫脱磷作用。发现发生脱硫，但没有发现脱磷。
The sulfur partitions between carbon-saturated iron melt and Na2O-SiO2 slags with the Na2O/SiO2 molar ratio of 3/2, 1/1, 2/3 and 1/3 have been measured at 1 250 and 1 350°C. The sulfide capacities C'S [=(wt%S)•(aO/aS)] calculated from the sulfur partitions were found to be in the range 10-2 to 10-4 and their temperature dependence was not observed. These values were lower than the previous measurements obtained from the gas-slag equilibrium studies above Na2O/SiO2=0.5-0.7, but were higher than the previous measurements at the slag composition below this ratio. The sulfur partitions between carbon-saturated iron melt and Na2O-CaO-SiO2 melts at the constant silica content were also measured at 1 250°C. The effect of lime on the sulfur distribution was compared with that of Na2O in the plot of log (S)/[S] vs. (Na2O+mCaO)/SiO2 ratio, thus resulting m=0.3. The significant amount of iron was observed in the slag phase after equilibration and the ratio of sulfur as FeS against total sulfur in slag was found to be maximum at the composition with the Na2O/SiO2 molar ratio of 0.9. Desulfurization and dephosphorization of the carbon-saturated iron melts (0.1% P, 0.05% S) by the sodium vapor produced by the reaction of NaCl with CaC2 investigated at 1 300°C. Desulfurization was found to occur, but no dephosphorization was found.