Filtering medium for fluid purification
AssigneeHöGanäS AB (Publ)
InventorsAvinash GORE, Bo HU, Sydney LUK
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Abstract
A filtering medium, a method for the production thereof, the use of said filtering medium and a method for reducing the content of multiple contaminants simultaneously in fluids by means of said filtering medium, wherein said filtering medium has or includes at least one of the following: a mixture (A) containing a major part of an iron-based powder and a minor part of a silver powder, an iron-silver powder alloy (B), and an iron-based porous and permeable composite containing silver (C).
Claims23
A filtering medium for reducing the content of contaminants in fluids, wherein said filtering medium comprises an iron-silver powder alloy,
- wherein the iron-silver powder alloy contains 0.01-5% of silver, by weight of the alloy, obtained by thermal bonding or thermal alloying atomized iron powder particles with silver powder particles, wherein atomized iron powder particles have a Fe-content of at least 90% by weight of the iron powder,
- wherein the iron-silver powder alloy has an average particle size between 1 μm and 10 mm, and
- wherein said contaminants are selected from the group consisting of chlorine containing compounds, nitrates, nitrites, heavy metals, toxic inorganic substances, toxic organic compounds, microorganisms and/or combinations thereof.
Dependencies are inferred from the claim text.