PRODUÇÃO DE MOLIBDÊNIO METÁLICO A PARTIR DA MOLIBDENITA DE CARNAÍBA (BAHIA).

Brazil has no official reserves of molybdenum, so the artesanal production of molybdenite from the astesanal mine of Carnaíba (Bahia) is an alternative to the domestic market demand. In this work the molybdenite from Carnaíba was used to produce molybdenum using roasting, leaching with NH4OH, precipitation and thermal degradation and reduction using hydrogen. The molybdenite crystals have 38% of molybdenum and approximately 10% micas. The Mo extraction by leaching was close to 90%. The molybdenum oxide produced has good crystallinity. The molybdenum produced by reduction was a powder with 99% of Mo. The overall process recovery was 85%. [ABSTRACT FROM AUTHOR]