【摘要】 采用等温饱和法分别测定900,1 000,1 100℃温度下Fe2O3在三种不同Na2CO3配比的硼砂熔盐中的溶解度。通过两因素三水平正交试验分析,研究Fe2O3在硼砂熔盐体系(Na2B4O7-Na2CO3)中的溶解度与熔盐成分和温度的关系。结果表明,wNa2CO3是影响溶解度的主要因素,wNa2CO3的增加与温度的提高有利于Fe2O3的溶解。随着温度的升高,Fe2O3的溶解度增大,但温度影响显著性相对较小。在1 100℃,wNa2CO3为20%时,其溶解度可达35%以上。更多还原

【Abstract】 The solubility of Fe₂O₃ at temperatures of 900 ℃,1 000 ℃,and 1 100 ℃ in three kinds of molten salts of borax with different Na₂CO₃ proportion has been determined respectively by isothermal saturation method in this paper.Through 2-factor 3-level orthogonal design,the relationships between the solubility of Fe₂O₃ in molten salts of borax and the composition of the molten salt and temperature are studied.The results show that the content of Na₂CO₃ is the major factor that affects the solubility of Fe₂O₃.As temperature increases,the solubility of Fe₂O₃ increases,but the extent of temperature effect is relatively small.When the content of Na₂CO₃ is 20%,the solubility of Fe₂O₃ is greater than 35% at 1 100 ℃,which is sufficient for the need of iron extraction from the molten salt.更多还原