The Candle Filters are as all pressure filters, operating on a batch cycle and may be seen in process lines handling many chemicals and many other applications that require efficient low moisture cake filtration or high degree of polishing.
Candle Filters are also used for thickening to produce a concentrated flowable slurry by partial removal of the liquid phase as filtrate. This mode of operation is possible since Candle Filters may operate on very short cycle times taking advantage of the high filtration rates whilst the cakes are still thin.
The Candle Filter consists of three major components
- The vessel
- The filtering elements
- The cake discharge mechanism