Open AccessMicrostructural and chemical characterization of stabilized spent vanadium pentoxide catalyst in copper smelting slag
Author(s) -
F Coronado,
A. Valenzuela Soto,
Martín Antonio Encinas Romero,
Ofelia Hernández-Negrete,
Guillermo Tiburcio Munive
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab62fd
Subject(s) - vanadium , pentoxide , smelting , metallurgy , materials science , slag (welding) , copper , catalysis , differential thermal analysis , characterization (materials science) , chemistry , diffraction , physics , optics , biochemistry , nanotechnology
The purpose of this research is to perform a microstructural characterization of the stabilized spent vanadium pentoxide (V 2 O 5 ) catalyst in the copper smelter slag. The spent V 2 O 5 catalyst (SVC) is a discarded material from a sulfuric acid production plant. The used SVC is a catalyst material supported in SiO 2 . The used copper smelting slag (CSS) was from a copper refining mine. The toxic V 2 O 5 compound present in the SVC was stabilized via pyrometallurgical processing with the CSS in an electric furnace with a CSS/SVC 4:1 ratio at 1250 °C to obtain a fused compound. The microstructural and chemical characterization of the CSS, SVC used materials and the obtained fused compound, were performed by scanning electron microscopy (SEM) coupled and Energy dispersed X-ray analyser (EDS), X-ray powder diffraction (XRD) and Differential Thermal Analyser (DTA-TGA). The fused compound was a complex slag that comprised of Fe 2 SiO 4 and FeVO 4 phases.