Le 18 janvier 2014, 02:05 dans Humeurs • 0
In the late 19th century and the early 20th century, the flotation cell manufacturing company put forward tank design. At present, the volume of the Flotation machinedesigned with this method can reach 150 m³, and the manufacturers are researching and producing even bigger flotation tank according to the production demands. The tank of this flotation machine is round equipped with bubble remover, bubble collector and ore discharging mouth as well as high-efficient level control system.
The flotation cell process makes the mining of mixed ore bodies efficient and economically viable. In a typical flotation cell, various parameters need to be controlled. These include surface level and interface measurement, slurry pH, flow-meters for flocculent agent dosing, slurry flow, compressed air flow, and valve control using electromagnetic flow-meters.
In the flotation separating process, the air amount through the ore pulp is determined by the circle rotary speed of the impeller of the flotation machine. In addition, increasing the rotary rate of the impeller will increase the amount of the air; however, this will over mix the ore pulp on some conditions, increase the impeller abrasion and energy consumption of the flotation machine and influence the production quality and shorten the service life of the machine. If necessary, we can increase the pressure inside the vertical pipe using an outside air blower and add air to it so as to relieve the abrasion of the impeller.
Accurate and reliable measurement is crucial during the process, as there needs to be a balance between the amount of base slurry and the amount of froth produced. Excess injected flocculent costs money, but is also expensive to remove from the process later down the line. The most common way to optimise the process is to measure the relative ‘thickness’ of the froth in relation to the level of the slurry in each flotation cell (http://www.sell-crusher.com/).
In the flotation separating process, the ore pulp flows through the flotation cell into the adjustable tailing down flow weir, and is absorbed on the impeller of the next cell, where it will get full mixing and inflation by the flotation machine again. The particles that are too heavy to flow into the down flow weir will be discharged from the sand discharging mouth in order to prevent the coarse particles from depositing inside the flotation cell.