Ceramic multilayer filters and method for producing the same

Details Ceramic multilayer filters and method for producing the same Ceramic multilayer filters and method for producing the same

2005-12-27

2005-12-27

Walker, W. L. (Department: 1723)

Liquid purification or separation

Filter

Material

C210S490000, C210S510100, C210S509000, C210S503000, C264S629000, C264S113000, C156S089110

Reexamination Certificate

active

06978901

ABSTRACT:
The invention relates to the area of ceramics and to ceramic multilayer filters, such as used for separating gases. The invention provides ceramic multilayer filters which are more economical to produce. To this end, the inventive ceramic multilayer filters include at least two layers of different particle size, the particle surfaces of all of the ceramic particles being completely or partially perfused with a material and spot and/or surface joints being formed between particles. The invention also provides a method for producing ceramic multilayer filters of this type, according to which slips are produced from at least two ceramic powders of different particle size, the particles of the ceramic powders being perfused with a material or a material in powder form being added to the ceramic slips. One or more layers are formed from the slips and then dried. At least two layers are placed one above the other and/or joined to each other and together are subjected to a temperature increase.

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