This work summarizes flotation results obtained in a modified column which selectively separates drained particles from the froth zone and uses a secondary wash water system between the feed and the froth zone. Flotation results on gold, copper, lead-zinc and fluorite ores are reported. The combination of separating the froth drop-back material as a ＇＇third-product＇＇ and secondary washing improved, the concentrate grades when compared to the conventional column cell. When the modified column was used for ＇＇rougher flash＇＇ flotation or as a cleaner of copper ores; clean copper concentrates analyzing 33-40% copper were obtained (33% recovery). Flotation recovery of gold from tailings was as much as 15%, with concentrate grades higher than 160 g/t. As a cleaning stage in lead-zinc ore flotation, recoveries of both sulfides were of the order of 92-94% with grades up to 80-82%, as compared to 70% in the ＇＇conventional＇＇ column. With the fluorite ore, recoveries of the order of 94%, were achieved with high selectivity (about 96% CaF2) at high flotation rates. The performance of the modified column is better than the conventional column due to improved mass transfer conditions. Finally, data on the influence of some cell design parameters are reported and the potential practical applications of this type of cell are discussed.