G. Gabra
This study describes a leaching process for recovering niobium oxide from pyrochlore concentrate using hydrofluoric acid. Key variables such as acid concentration, temperature, reaction time, solid/acid ratio, agitation speed, and particle size were correlated with the recovery of niobium oxide. The results indicated a relatively low activation energy of 1.86 Kcal/mole and demonstrated the dependence of reaction rate on agitation, suggesting that the process is diffusion controlled. Optimal conditions for extracting niobium oxide from the leach solution, utilizing either methyl isobutyl ketone or tributyl phosphate, have been determined. Findings from this research contribute to the understanding of niobium extraction processes and the potential for pyrochlore minerals as an alternative source for niobium production.
@article{dd3100cc-3099-4aeb-b8e8-f0be313b3c70,
title={Process for the recovery of niobium oxide from pyrochlore concentrate},
author={G. Gabra},
year={1985},
language={en}
}TY - JOUR TI - Process for the recovery of niobium oxide from pyrochlore concentrate AU - G. Gabra PY - 1985 LA - en ER -
The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f
Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c
Alain Vignes
This book provides a comprehensive overview of the various processing operations and routes in extractive metallurgy. The objective is to present a de
Mark E. Schlesinger, Matthew J. King
This book presents a comprehensive overview of the principles and practices of copper extraction metallurgy. The objective is to provide both a theore
Blair Burwell
The exhaustion of current vanadium sources and the emergence of new applications are driving the need for innovative methods of extraction. The aim of