Features of the Microstructure and Chemical Compositions of Vanadium-Containing Slags Including Determination of Vanadium Oxidation Degrees

Autor: Ulyana Kologrieva, Anatoly Kovalev, Anton Volkov, Dmitry Wainstein, Vladimir Vakhrushev
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Chemical process
Materials science
Scanning electron microscope
x-ray fluorescence analysis (xrf)
0211 other engineering and technologies
Oxide
Vanadium
chemistry.chemical_element
02 engineering and technology
vanadium
converter slag
extraction
oxidation degree
phase composition
X-ray fluorescence analysis (XRF)
scanning electron microscopy (SEM)
X-ray photoelectron spectroscopy (XPS)
scanning electron microscopy (sem)
x-ray photoelectron spectroscopy (xps)
lcsh:Technology
Article
chemistry.chemical_compound
X-ray photoelectron spectroscopy
General Materials Science
lcsh:Microscopy
021102 mining & metallurgy
lcsh:QC120-168.85
lcsh:QH201-278.5
lcsh:T
Metallurgy
Slag
021001 nanoscience & nanotechnology
Microstructure
chemistry
Elemental analysis
lcsh:TA1-2040
visual_art
visual_art.visual_art_medium
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
0210 nano-technology
lcsh:Engineering (General). Civil engineering (General)
lcsh:TK1-9971
Zdroj: Materials, Vol 12, Iss 21, p 3578 (2019)
Materials; Volume 12; Issue 21; Pages: 3578
Materials
ISSN: 1996-1944
Popis: Metallurgical vanadium-containing converter slag could be used as an alternative vanadium source. The development of a physico-chemical basis for the comprehensive processing of industrial vanadium-containing debris requires information about their elemental composition as well as the oxidation degrees of the elements and forms of compounds in order to solve two key problems: a better utilization of industrial wastes and a lowering of environment impact. This research was aimed at the development of methods to determine the fractions of elements and their oxidation degrees in vanadium-containing industrial debris exemplified by basic oxygen converter vanadium slags. A set of bulk and surface analysis methods (X-ray fluorescence analysis (XRF), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS)) was used for this purpose: based on results of elemental analysis, SEM detects the oxide phases of metals, while an analysis of the XPS lines’ fine structures provides fractions of corresponding elements with definite oxidation degrees. In this way, one can determine the fractions of vanadium in multiple oxidation degrees in slags and can properly select the chemicals and parameters of chemical processes for its fullest extraction.
Databáze: OpenAIRE
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