INVESTIGADORES
RODRIGUEZ Mario Humberto
congresos y reuniones científicas
Título:
Uso de un Reactor a Presión para la Extracción de Niobio y Tantalio de Columbo-Tantalitas
Autor/es:
M. DEL C. RUIZ; M. RODRIGUEZ; J. GONZÁLEZ; J. RIVAROLA
Lugar:
San Juan
Reunión:
Jornada; V Jornadas Argentinas de Tratamientos de Minerales; 1998
Institución organizadora:
Inst. de Inv. Mineras - Inst. de Ing. Qca. - Univ. Nac. de San Juan
Resumen:
The extraction of Nb and Ta from a columbo-tantalite of San Luis, Argentina, is being studied by using a pressure reactor and HF as leaching agent. The reagents and products have been characterized by several techniques such as SEM, EDXS, XRF, XRD BET, and size particle analysis. Experimental results have shown that the extraction of niobium and tantalum increases with increasing temperature, reaction time and acid concentration. For particle size between +80 and -355 mesh no significant changes are detected. It is also slightly affected by the stirring speed. DRX analysis of the residues did not show formation of new crystalline structures.
