Any porous material that allows the fluid in the filter to pass through and the solid particles to be trapped for solid-liquid separation purposes is collectively referred to as a filter medium. It is a key component of the filter, which determines the separation accuracy and efficiency of the filtration operation, and also directly affects the production strength and power consumption of the filter. There are many kinds of filter media used in industry. According to their structure, they are divided into three categories: flexible media, rigid media and loose filter media:
- Flexible filter media
- Metal filter media
- Non-metallic filter media: cotton fabric, wool fabric, silk fabric, synthetic fabric, fiberglass fabric, non-woven fabric
- Metal, non-metal mixed medium
2. Rigid filter media
Sintered metal mesh, metal fiber sintered felt, powder sintered material, porous ceramic, sintered porous plastic, sintered aluminum oxide, glass filter medium
3. Loose filter media
Diatomaceous earth, expanded perlite powder, cellulose, sand, charcoal powder, smokeless