NDLI: Mineralogical characterization of chromium ore processing residue

Content Provider	IEEE Xplore Digital Library
Author	Xiao Kai Li Guocheng
Copyright Year	2011
Description	Author affiliation: School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan China (Xiao Kai; Li Guocheng)
Abstract	Understanding the mineralogical characterization of chromium ore processing residue (COPR) is the basis of soil remediation which is polluted by chromium. Some techniques, such as X-ray fluorescence (XRF), X-ray diffraction technology (XRD) and environmental scanning electron microscopy (ESEM), were applied to identify the elemental composition, mineral composition and surface feature of COPR respectively. The result shows that the dominant elements of COPR are Ca, Fe, Mg, Al, Si and Cr in content order, which are evenly distributed throughout of COPR particles. The weight percentage of chromium is around 6%. COPR particles consist of brownmillerite, periclase, calcite, dolomite, hydroandradite, chromite and quartz. Trivalent chromium exists in brownmillerite and chromite. Hexavalent chromium possibly exists in hydroandradite. Particle size of COPR would not take effect on its mineral composition. Larger COPR particles are conglomerates of smaller particles, which suggests that chromium exists everywhere in COPR and it couldn't exist in some particles of specific sizes.
Starting Page	4217
Ending Page	4221
File Size	895449
Page Count	5
File Format	PDF
ISBN	9781457702891
e-ISBN	9781457702907
DOI	10.1109/ICETCE.2011.5774298
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calcium Moon X-ray diffraction Elemental composition Iron Mineral composition Chromium ore processing residue X-ray scattering Diffraction Geoenvironmental engineering Chromium Chromium pollution Surface feature analysis
Content Type	Text
Resource Type	Article

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