Resumo

GONZALEZ, José A. et al. Concentración de vanadio y níquel en cenizas volantes por combustión controlada . INCI [online]. 2004, vol.29, n.9, pp.504-509. ISSN 0378-1844.

This study focuses, in view of their potential recovery, on the concentration of vanadium and nickel from ash by means of a process of controlled combustion of the fly ash from fuel oil at a thermoelectric plant located in the city of Maracaibo, Venezuela. Four size fractions were prepared from the fly ash, including the original sample: 370-160, 160-96 and 96-74µm. The combustion temperatures were 400, 500 and 600ºC and combustion times of 60, 90 and 120min. A 1200ºC muffle type oven and hearths of stainless steel with 150ml capacity were used. The results showed that the sample with the finest grain size has the highest concentration of V and Ni for a temperature of 500ºC and a time of 60min.

Palavras-chave : Cenizas Volantes; Combustión; Factor de Enriquecimiento; Fuel Oil.