Title :
Producing Cr2O3 nanooxide from chromite concentrates
Author :
Aghaie-Khafri, Mehrdad ; Navazany, Shiva
Author_Institution :
Dept. of Mech. Eng., K.N. Toosi Univ. of Technol., Tehran, Iran
Abstract :
High-purity (99.9+%) nanosize Cr2O3 was produced from chromite concentrates. Sodium dichromate was produced from an alkaline melt of chromite ore and then nanosize Cr2O3 was obtained by reaction between sodium dichromate and sulphur. Nanooxides were investigated by scanning electron microscopy, transmission electron microscopy and X-ray diffraction analysis. The size of particles was 50-148 nm. The nanoparticles show a loosely agglomerated structure. The presented method is simple and economical.
Keywords :
X-ray diffraction; chromium compounds; nanofabrication; nanoparticles; particle size; scanning electron microscopy; transmission electron microscopy; Cr2O3; X-ray diffraction; alkaline melt; chromite concentrates; chromite ore; loosely agglomerated structure; nanooxide; nanoparticles; particle size; scanning electron microscopy; size 50 nm to 148 nm; sodium dichromate; transmission electron microscopy;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2014.0003
