The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 1984
Filed:
Aug. 24, 1981
Abstract
Natural zeolite minerals which have a high silicon-to aluminum atomic ratio (hereinafter referred to as Si/Al ratio)and a fibrous micro-structure in at least some parts are ore-dressed and classified according to the iron impurity content converted in terms of iron oxide Fe.sub.2 O.sub.3. Zeolite with high Si/Al ratio is excellent in resistance to acid and heat and can be re-activated at high temperatures. The fibrous microstructure is considered to impart a high degree of mechanical strength to the zeolite after pelletization. High-grade natural zeolites with small iron impurity content uniformly exhibit high adsorption performance. In particular, zeolite adsorbents using natural zeolite consisting principally of mordenite are very useful for various purposes. In the case of removing oxygen, the combined use of the zeolite adsorbent and an oxygen removing catalyst provides good results. By cooling the zeolite adsorbent down to low temperatures, its adsorption performance rises sharply. The zeolite adsorbent is of particular utility when employed for purification of gas, removal of water vapor from a vacuum system, removal of undesirable components and so forth.