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首页> 外文期刊>Journal of industrial and engineering chemistry >Production of SrCO3 and (NH4)2SO4 by the dry mechanochemical processing of celestite
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Production of SrCO3 and (NH4)2SO4 by the dry mechanochemical processing of celestite

机译:天青石的干燥机械化学处理生产SrCO3和(NH4)2SO4

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摘要

A SrCO3 formation starting from activated SrSO4-(NH4)2CO3 mixtures as a result of dry mechanochemical treatment for 180 min in a planetary ball mill of celestite together with (NH4)2CO3 was studied. The phases that formed during milling were successfully characterized by X-ray diffraction measurement (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and chemical analysis. A novel hydrometallurgical process to convert both SrCO3 (product) and (NH4)2SO4 (by-product) from celestite via dry mechanochemical conversion with (NH4)2CO3 was developed for the first time in this work. Under optimum conditions, the conversion of SrCO3 was 98.1%. The (NH4)2SO4 leach solution was crystallized.
机译:研究了在天青石行星式球磨机中进行180分钟的干式机械化学处理后,从活化的SrSO4-(NH4)2CO3混合物开始形成SrCO3的过程,并与(NH4)2CO3一起进行了研究。通过X射线衍射测量(XRD),傅立叶变换红外光谱(FT-IR),扫描电子显微镜(SEM)和化学分析成功地表征了铣削过程中形成的相。在这项工作中,首次开发了一种新的湿法冶金工艺,该工艺可以通过天青石的干燥机械化学转化将天青石中的SrCO3(产物)和(NH4)2SO4(副产物)转化。在最佳条件下,SrCO3的转化率为98.1%。使(NH 4)2 SO 4浸出溶液结晶。

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