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US 4,791,082 AGranted
Method of making zeolite castings
AssigneeDegussa AG
InventorsJurgen Dorr, Peter Kleinschmit, Reinhard Klingel, Reinhard Manner
Life of this patent
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Abstract
There are prepared zeolite molded articles which also contain alkali silicate and/or alkaline earth silicate and mineral fibers and/or carbon fibers in addition to the zeolite.
Claims1
A method of producing a zeolite molded article comprising (1) powdery zeolite, (2) at least one silicate of the group consisting of an alkali silicate and an alkaline earth silicate and (3) at least one fibrous filler of the group consisting of mineral fibers and carbon fibers,
- said method comprising mixing the powdery zeolite (1) with the silicate (2) and water (4), mixing the fibrous filler (3) with the mixture of powdery zeolite (1), the silicate (2) and water (4), molding the mixture of fibrous filler (3), powdery zeolite (1), the silicate (2) and water (4) by applying a pressure of at least about 0.1 MPa, drying at an elevated temperature to constant weight and then heating sufficiently to activate the zeolite.
Dependencies are inferred from the claim text.