Cake Filtration

Cake filtration is a separation regime in which particles are retained on the surface of a medium, forming a cake that increasingly becomes the primary separation layer. It underpins vacuum and pressure belt filters, filter presses, candle/leaf filters and many batch operations. A successful cycle builds a thin, permeable cake that meets clarity quickly, then uses washing to displace or dilute mother liquor before deliquoring by air or gas hold to reach target dryness. Design balances driving force (vacuum/pressure), medium cut‑off and surface finish, drainage support, cake thickness and residence time. Operating strategies choose constant‑pressure or constant‑rate phases to minimise energy and protect the medium. KPIs include filtrate turbidity, ∆p vs. throughput, wash efficiency and cake moisture. With appropriate media selection and conditioning, cake filtration delivers predictable, scalable performance for a wide range of industrial slurries.