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首页> 外文期刊>Journal of industrial and engineering chemistry >Leaching kinetics of Chevreul's salt in hydrochloric acid solutions
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Leaching kinetics of Chevreul's salt in hydrochloric acid solutions

机译：雪佛勒盐在盐酸溶液中的浸出动力学

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The aim of this study was to investigate the dissolution kinetics of Chevreul's salt in hydrochloric acid [HCl] solutions in a mechanical agitation system and to precipitate Chevreul's salt [Cu2SO3-CuSO3·2H2O] using ammonium sulfide [(NH4)2SO3] solutions at various concentrations from synthetic aqueous copper(II) sulfate [CuSO4] solutions. Reaction temperature, concentration of HCl, stirring speed and solid/liquid ratio were selected as parameters. The experimental results were successfully correlated by linear regression using Statistica Package Program. Dissolution curves were evaluated in order to test shrinking core models for solid-fluid systems. It was observed that increase in the reaction temperature and decrease in the solid/liquid ratio causes an increase the dissolution rate of Chevreul's salt. The dissolution extent is highly increased with increase the concentration of HCl solutions in the experimental conditions. The activation energy was found to be as 57 kJ/mol. The leaching of Chevreul's salt was controlled by diffusion through the ash or product layer.
机译：本研究的目的是研究机械搅拌系统中Chevreul盐在盐酸[HCl]溶液中的溶解动力学，并使用硫化铵[（NH4）2SO3]溶液在不同的浓度下沉淀Chevreul盐[Cu2SO3-CuSO3·2H2O]。硫酸铜（II）合成水溶液[CuSO4]的浓度。选择反应温度，HCl浓度，搅拌速度和固/液比作为参数。使用Statistica Package Program通过线性回归成功地关联了实验结果。评估了溶出曲线，以测试固体流体系统的收缩核模型。观察到反应温度的升高和固液比的降低导致雪佛勒盐的溶解速率增加。在实验条件下，溶解度随着HCl溶液浓度的增加而大大增加。发现活化能为57kJ / mol。 Chevreul盐的浸出是通过烟灰或产品层的扩散来控制的。

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