A filter media
AssigneeAhlstrom-Munksjö Oyj
InventorsChristine LEMASSON, Christophe THERON, Larry SIMON
Life of this patent
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Abstract
A filter media suitable for use in filtering fluids is provided. The filter media comprises a filtration particle, said filtration particle having an Al2O3 content of from 15 wt % to 70 wt % and a SiO2 content of less than 70 wt % based on the weight of the particle.
Claims21
A filter media comprising a filtration particle, said filtration particle having an Al2O3 content of from 15 wt % to 70 wt % and a SiO2 content of less than 70 wt % based on the weight of the particle, wherein the filtration particle comprises at least 5 wt % Na2O.
A method of manufacturing a filter media of, the method comprising
- (a) contacting a filtration particle which has an Al2O3 content of from 15 wt % to 70 wt % and a SiO2 content of less than 70 wt % based on the weight of the particle and which comprises at least 5 wt % Na2O with an alkaline solution;
- (b) forming a wet laid sheet from a fibrous slurry comprising the filtration particle;
- and
- (c) drying the sheet to obtain the filter media.
Dependencies are inferred from the claim text.