optimizing froth area of the flotation cell. the flotation cell sizes required, and the degree of froth crowding. they can also be used to evaluate if your existing flotation cell froth area is over or under loaded 8 016 webinaroptimizing froth area of the flotation cell, jason heath duty rougher scavenger cleaner froth carry rate (tph/m2) 0.8,productive froth flotation technology flsmidth,the rotor of the wemco is at top of the cell while the nextstep is at the bottom of the machine. the rotor placement creates different flow patterns within the cell which affects froth recovery. when it comes to aeration of the cells, wemco machines draw in and use air without the use of an external blower.