Synthesis of high purity rutile nanoparticles from medium-grade Egyptian natural ilmenite

Beni-Suef University Journal of Basic and Applied Sciences

Ahmed A. Farghali¹  Mohamed M.H. Khedr¹  Mohamed G. Shahien²  Ayman E. Maurice²  Rabea A.M. Ali² 

[1] Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt;Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt;

关键词: Synthetic rutile;    Ilmenite;    Nanoparticles;    Mechanical activation;    Reduction;    Calcination;   

DOI  :  10.1016/j.bjbas.2015.05.013

来源: DOAJ

【 摘 要 】

The Egyptian magmatic ilmenite is classified as a medium-grade ore. The present work is an attempt to produce a high-quality TiO2 that can be used in several industries from this medium-grade raw material using the mechanical activation, carbothermic reduction, hydrochloric acid leaching and calcination. A mixture from the ilmenite (FeTiO3) and activated carbon was milled for 30 h. This mixture was annealed at 1200 °C for one hour and the product was leached by hydrochloric acid and calcined at 600 °C for two hours. The role of the ball milling was to grind the raw ilmenite to obtain the nano size, and the carbothermic reduction was to reduce all the Fe-Ti phases to a mixture from Fe metal and TiO2. Leaching procedure was carried out to remove all the Fe metal and obtain a high-grade TiO2. After leaching and calcination of the milled and annealed mixture of FeTiO3/C under the optimal conditions, TiO2 nanoparticles with a size of 10–100 nm and purity more than 95% were obtained. The qualifications of the synthesized high purity rutile nanoparticles from the Egyptian natural ilmenite match the conditions of many industrial applications.

【 授权许可】

Unknown