Ceramic Membrane Filters
Ceramic membrane filters are Inorganic, hydrophilic, and are ideal for extreme nano-, ultra-, and microfiltration applications that require longevity, resistance to aggressive solvents, and superior pressure/temperature tolerances. Ceramic membrane filters are basically ultrafiltration or microfiltration filters, used to treat wastewater and water at higher elevated temperatures. Ceramic membrane filters are produced from inorganic material such as aluminum oxide, silicon carbide, titanium oxide, or zirconium oxide. The membrane porous core material is first formed through extrusion process which becomes the support structure for the ceramic membrane. Then coatings are applied to the inner face or the filtering face with the same ceramic particle or sometimes different, depending on the application.
For example, if your core material is aluminum oxide, we also use aluminum oxide particles as the coating. The size of ceramic particles used for the coating, as well as the number of coating applied will determine the pore size of the membrane as well as the distribution characteristics. After depositing the coating to the core, sintering takes place at high temperatures inside a furnace, making the membrane layer integral to the core support structure. This provides us a very durable and hard surface.
This sintered bonding ensures a very long life for the membrane. The ceramic membrane filters can be custom produced from microfiltration range to ultrafiltration range by varying the number of coatings and by using the right particle size for the coating. Standard pore sizes can vary from 0.4 microns to .01 micron size. Ceramic membrane filters are like glass, very hard and durable, unlike the polymeric membrane. Therefore ceramic membrane filters offer a very high mechanical strength. Moreover ceramic membrane filters are chemically inert. They can be used at a very high flux compared to the polymeric membrane. Ceramic membrane filters can be vigorously cleaned and are thermally stable. Ceramic membrane filters have a very long operation life, about three to four times as long compared to the polymeric membranes. Ceramic filters are very expensive compared to polymeric filters, because ceramic filtration applications start where the polymeric end. Ceramic membrane filters have various applications, mostly in treating very difficult to treat water and wastewater, or where high temperature operations are involved. It also has vast applications in oil and gas, wastewater recycling, as a pre‑treatment for RO, and for removing precipitated metals from any precipitation process, for oil/water separation, food and beverage industry, microfiltration of milk, clarification of fruit juice, separation of soybean protein, reclamation and collection of nano powdersand catalyzer, pharmaceutical industry, in mining where you have to treat the wasted tailing ponds. We offer single channel as well as multiple channel shaped ceramic membrane filters.