The Candle Filters are, as all pressure filters, operating on a batch cycle and may be seen in process lines handling titanium dioxide, flue gas, brine clarification, red mud, china clay, fine chemicals and many other applications that require efficient low moisture cake filtration or high degree of polishing.

One of the features of Candle Filters when used for thickening is their clear filtrate since gravity thickeners, in analogy, produce overflows which always contain a certain amount of fine suspended solids.