How is the candle filter cake formed?

The filter cake in a candle filter is gradually formed by the accumulation of solid substances on the filter cloth.

When the liquid passes through the filter cloth, the solid particles inside will be blocked by the filter cloth and remain on the surface. Over time, the solid particles gradually accumulate to form a layer of solid material with appropriate thickness, which is called the filter cake layer.

Specifically, when liquid passes through the filter cloth, the pores on the filter cloth will prevent solid particles from passing through, while the liquid can enter the interior of the filter element through the filter cloth. Solid particles gradually accumulate on the surface of the filter cloth, forming a layer of solid material. Due to the small gaps between the particles in the filter cake layer, the escape of particulate impurities in the liquid is hindered, making the filtrate clearer.

The formation of filter cake layer is a key process for achieving solid-liquid separation in candle filters. By controlling the thickness of the filter cake layer, the filtration effect and filtration speed can be adjusted. When the filter cake layer reaches a certain thickness, the filtration efficiency will decrease. At this time, it is necessary to remove the filter cake layer and rebuild a new filter cake layer to start a new round of filtration cycle.

In summary, the filter cake in a candle filter is gradually formed by the accumulation of solid substances on the filter cloth, and the formation of the filter cake layer is a key process for achieving solid-liquid separation.