Extrusion method, dense ceramic

The hollow-fiber precursors, which normally comprise of ceramic particles, binder, and dispersant, are heat-treated in a furnace to develop the desired microstructure and properties. Ideally, this treatment, commonly known as sintering, is the process by which a powder compact is transformed into a strong and dense ceramic body without melting the powder. As the sintering process is required for a ceramic hollow-fiber precursor, which has been prepared from a dry-jet wet extrusion, this method is often called the combined dry-jet wet extrusion and sintering technique. 

Hollow fibre membranes have a micro-tubular configuration with outer diameter of less than 2 mm. The above extrusion-sintering method can also be used to fabricate hollow fibre membranes. But the method mostly used to fabricate dense ceramic hollow fibre membranes is the phase... 

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