Screen bowl centrifuge

Consider a continuous screen bowl centrifuge as illustrated in Figure 4.21. In this device liquor passes through a filter medium and cake builds up inside as before. 

Vacuum filtration and screen-bowl centrifuges are the principal unit operations used for mechanical dewatering of fine coal. Pressure filtration (plate and frame filter presses and continuous belt filter presses) is used to a much lesser extent to dewater fine... 

FIG. 18-161 Cylindrical-conical screen-bowl centrifuge. (Bird Machine Co.)... 

Rapid settling slurries lend themselves to gravity separation and screen-bowl centrifugation. 

Rapid settling slurries lend themselves to gravity separation or filtering centrifuges with wedge wire screen (like pusher or screen bowl centrifuges). 

Screening and centrifugal dryers dewater the coarser products while screen-bowl centrifuges and sometimes thermal dryers are utilized to reduce the moisture content of the finest sizes. 

Morrison, J.J., B.G. Miller, and J.J. Battista. 1998. Recovery of Ultra Fine Bituminous Coal from Screen-Bowl Centrifuge Effluent A Possible Feedstock for Coal-Water Slurry Fuels Proc. 23" International Technical Conference on Coal Utilization and Fuel Systems. Coal Technology Association. Clearwater, FL. March 9-13. pp. 707-717. 

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