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Difference between revisions of "Candle Filters"
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[[Category:Filtration]]{{Knoppen}} | [[Category:Filtration]]{{Knoppen}} | ||
[[File:Candle_filters_01.gif|thumb|right|Candle Filter]] | [[File:Candle_filters_01.gif|thumb|right|Candle Filter]] | ||
[[File:Candle_filters_02.jpg|thumb|right|Candle filter model]] | [[File:Candle_filters_02.jpg|thumb|right|Candle filter model]] | ||
[[File:Candle_filters_03.gif|thumb|right|Design of a Candle filter]] | [[File:Candle_filters_03.gif|thumb|right|Design of a Candle filter]] | ||
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. | |||
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. | |||
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. 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. | 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. 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. | ||
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==Components== | ==Components== | ||
The Candle Filter consists of three major components: | The Candle Filter consists of three major components: | ||
*The vessel | *The vessel | ||
*The filtering elements | *The filtering elements | ||
*The cake discharge mechanism | *The cake discharge mechanism | ||
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*The vent on top of the head must be checked for free evacuation of air. | *The vent on top of the head must be checked for free evacuation of air. | ||
*The filter must not be overfilled with cake since this causes the candles to bend so they must be checked periodically. | *The filter must not be overfilled with cake since this causes the candles to bend so they must be checked periodically. | ||
==Video== | ==Video== | ||
<youtube>FTRLWHkO5Lo</youtube> | <youtube>FTRLWHkO5Lo</youtube> | ||