DRIFT SPECTROSCOPIC STUDY OF THEMECHANISM OF SELECTIVE SHEAR-FLOCCULATIONOF HEMATITE FROM KAOLINITE
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition1997年第Z1期
论文作者：龚文琪
文章页码：83 - 93
摘 要：<正> The mechanism of separating hematite from kaolinite by shear-flocculation and the reason responsible for the selectivity of shear-flocculation was studied by using diffuse reflectance infrared Fourier transform （DRIFT） spec-troscopy, which was found to be effective for analysing adsorbed oleate species on the highly absorbing mineral hematite. The spectra suggest that chemisorption of oleate on hematite took place under shear-flocculation condition and that the chemisorbed species was bridged bidentate, corresponding to a peak at 1580 cm-1. Dimers of oleic acid, corre-
龚文琪
Wuhan Univereity of Technology
摘 要：<正> The mechanism of separating hematite from kaolinite by shear-flocculation and the reason responsible for the selectivity of shear-flocculation was studied by using diffuse reflectance infrared Fourier transform （DRIFT） spec-troscopy, which was found to be effective for analysing adsorbed oleate species on the highly absorbing mineral hematite. The spectra suggest that chemisorption of oleate on hematite took place under shear-flocculation condition and that the chemisorbed species was bridged bidentate, corresponding to a peak at 1580 cm-1. Dimers of oleic acid, corre-
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