Separations

Separations

Description

In order to conduct a separation you should familiarise yourself with the function of the low mix sleeve Mixed liquids of any ratio and with differing Specific Gravities are continually pumped (low pressure) or gravity fed into one of the inlets (1) provided on the housing (the spare (12) is blocked off). During separations, a sleeve (2) (low mix sleeve) is installed to protect the entering liquids (and further mixing) from the spinning rotor (3). The liquids after entering the housing drop to the base plate of the centrifuge, which has directional vanes (4) that direct the liquids to the entry point (5) at the base of the spinning rotor. Inside the rotor at the base of the vane package (6) a mild pumping action takes place to continually fill the rotor at the required feed rate. As the liquids are entering the spinning rotor they contact with a deflector plate (7), which forces the mixed liquids to the outside of the rotor wall at the bottom of the rotor. At this point the mixed liquids are first subjected to the "G" force created by the spinning rotor. As the unit is continually fed the liquid continually moves up the inside of the rotor sleeve and is subjected to centrifugal force between 100 G to 600 G inside the separation zone (8). The height of the rotor is significant, as this, along with the flow rate fed to the unit will determine the length of time (the retention time) the liquids are subjected to "G" force and therefore the optimum efficiency of the separation. Light & Heavy Phase DischargeDuring the period of retention the mixed phases inside the spinning rotor are subjected to the "G" forces and two distinct phases will appear inside the rotor. When the two, now separate phases reach the top of the rotor they optimise at the centre of the "Fixed" light phase weir (9). At this point the now separated phases are able to exit the top of the rotor. There are 4 heavy phase outlets (10) which allow the heavy phase liquid to enter the top heavy phase compartment past the pre determined changeable heavy phase weir (11) and out through the heavy phase discharge outlet (12). The light phase will gradually separate from the heavy phase and sit "ontop" as both liquids spin in the rotor. As both phases reach the fixed light phase weir (13) the optimum point, at its centre, which is determined by the rotor speed. As the rotor continues to fill from the bottom the light phase volume at the optimum point will exit from the light phase exit (14) into the light phase collector ring (15) and out via the light phase discharge nozzle (16). The heavy Phase exits the rotor at point (10), up into the heavy phase chamber (17) out into the heavy phase collector ring (18) and discharged out of the heavy phase discharge outlet (12).

Introduction Separations Extractions & Water washes Multi stage, gravity fed, continuous counter current Extractions FABs