The binder component 5 - 15 weight sections, the thickener and/or kneading mixing it does the blend which

摘要

PROBLEM TO BE SOLVED: To obtain zeolite granules having a small diameter, a large pore volume and excellent in pressure and wear resistance by kneading a mixture of zeolite powder with a binder and other additives so that the bulk density of the mixture is regulated to a specified value. ;SOLUTION: A mixture of zeolite powder with 5-15 pts. wt. binder based on 100 pts.wt. (expressed in terms of anhydride) of the zeolite powder, 1-10 pts.wt. thickener and/or water retaining agent and 50-80 pts. wt. water is kneaded so that the bulk density of the mixture is regulated to 0.7-1.5kg/l. The kneaded mixture is granulated by extrusion and the resultant granules are made uniform by rolling, dried, fired, subjected to ion exchange and activated to obtain the objective high strength low wear zeolite granules having ≥85wt.% zeolite content, 0.3-0.5cc/g pore volume and 0.5-2mm diameter. The zeolite is preferably A type, X type, Y type or L type zeolite.;COPYRIGHT: (C)1998,JPO