Ceramic filter element and method for manufacturing a ceramic filter element
AssigneeOutotec (Filters) Oy
InventorsBjarne Ekberg, Olli Högnabba, Rolf Hindstöm, David Eveland, Edward Vroman
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Abstract
The invention relates to a ceramic filter element (22) for removal of liquid from solids containing material in a capillary suction dryer. The filter element comprises a ceramic substrate covered by a sintered ceramic microporous layer (31). The sintered microporous membrane layer is provided with coarse solid particles (71) of a particle size larger than a pore size of the membrane material layer (31) so as to form a textured surface (50) which prevents a filter cake from sliding off the surface of the filter element prior to the intended cake discharge.
Claims20
A method for manufacturing a filter element to be used in removal of liquid from solids containing material to be dried in a capillary suction dryer which filter element contains a ceramic microporous membrane layer supported by a ceramic substrate, wherein the method comprises:
- providing the ceramic substrate,
- coating the ceramic substrate by a ceramic microporous membrane material layer,
- applying solid particles to the membrane material layer, a particle size of the solid particles being larger than a pore size of the membrane material layer, and
- sintering the ceramic microporous membrane material containing the solid particles.
A filter element to be used in removal of liquid from solids containing material to be dried in a capillary suction dryer, the filter element comprising a ceramic substrate covered by a sintered ceramic microporous layer, wherein the sintered microporous membrane layer contains coarse solid particles of a particle size larger than a pore size of the membrane material layer.
A filter apparatus, comprising one or more filter elements, each filter element further comprising a ceramic substrate covered by a sintered ceramic microporous layer, wherein the sintered microporous membrane layer contains coarse solid particles of a particle size larger than a pore size of the membrane material layer.
Dependencies are inferred from the claim text.