Electric arc furnace dust contains mainly ZnO, ZnFe₂O₄, and iron oxides. In this study, chemical composition of ZnO, ZnFe₂O₄, and Fe₂O₃ and leaching kinetics of ZnO, ZnFe₂O₄, and Fe₂O₃ in HNO₃ solutions were investigated. It was seen that the dissolution of ZnO is very fast, therefore the leaching kinetics of ZnO cannot be determined. Kinetic parameters and model equations were derived for the leaching of ZnFe₂O₄ and Fe₂O_3. Leaching kinetics of ZnFe₂O₄ was explained by the pseudohomogeneous reaction model. Activation energy and order of HNO₃ concentration were found to be as 37.5 kJ mol⁻¹ and 0.37, respectively. The model equation was derived as . It was determined that experimental data for the leaching kinetics of Fe₂O₃ best fit with the shrinking core model (SCM). Activation energy and order of HNO₃ concentration were found to be as 51.5 kJ mol⁻¹ and 0.67, respectively The model equation was derived using SCM as _.

中文翻译：

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硝酸溶液中电弧炉粉尘的浸出动力学

电弧炉粉尘主要包含ZnO，ZnFe ₂ O ₄和氧化铁。在这项研究中，氧化锌的化学组成，的ZnFe ₂ Ò ₄和Fe ₂ ö ₃和ZnO的浸出动力学，的ZnFe ₂ Ò ₄和Fe ₂ ö ₃在HNO _3种溶液进行了研究。可以看出，ZnO的溶解非常快，因此不能确定ZnO的浸出动力学。推导了ZnFe ₂ O ₄和Fe ₂ O ₃浸出的动力学参数和模型方程_。2 O ₄由假均相反应模型解释。发现活化能和HNO ₃浓度的阶数分别为37.5kJ mol ^-1和0.37。模型方程为。已确定，Fe ₂ O ₃浸出动力学的实验数据与收缩核模型（SCM）最为吻合。发现HNO _3的活化能和浓度顺序分别为51.5 kJ mol ^-1和0.67 _。