Flotation cells mainly consist of big tanks where an impeller keeps the water/material solution rotating at a high speed. Use of specific chemical reagents and the possible addition of air in the solution enhances separation of the ore from the liquid.
For this application, Bonfiglioli provides helical bevel or parallel shaft gearmotors with more bearings. Output configurations are usually reinforced bearings to withstand by the machine impeller on the shaft. In some models, the machine requires injection of high-pressure air to maximize separation of the material from water. In this case, Bonfiglioli provides a gearbox equipped with a pass-through hole on the output shaft and with a specific interface on top of the gearbox for the pipeline connection.
HDOs are usually driven by belt transmissions, while HDPs are directly connected to the motor with a bell housing. Independent coolers are usually installed on bigger machines. Drywell is a commonly required feature.