The effects of LiOH and NaOH on the carbonation of SrSO4 by dry high-energy milling
作者： Erika Turianicová , Abdullah Obut , Anna Zorkovská , Peter Baláž , Marek Matik
DOI: 10.1016/J.MINENG.2013.05.017
关键词: Strontium carbonate 、 Celestine 、 Hydroxide 、 Scanning electron microscope 、 Inorganic chemistry 、 Carbonate 、 Carbon 、 Strontium 、 Chemical engineering 、 Carbonation 、 Materials science
摘要: Abstract In this work, the effects of alkaline hydroxides (NaOH and LiOH) on direct mechanochemical carbonation using dry high-energy milling celestine (SrSO 4 ) under CO 2 atmosphere was investigated with X-ray diffraction (XRD), infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) carbon analyses. It observed that SrSO not directly carbonated by without LiOH or NaOH additives. Direct SrCO 3 formation during mixture atmosphere, it shown a minimum 50% initial mechanochemically in presence gas. does stimulate carbonation. However, washing milled water resulted strontium carbonate (SrCO because enhanced dissolution Li , promoted activation effect milling. Depending hydroxide used milling, carbonates different space group settings were formed, which have (split single) main absorption bands.
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