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:
Nov. 24, 1987
Filed:
Jun. 15, 1984
Robert Zeller, Langerwehe, DE;
Uranit GmbH, Julich, DE;
Abstract
A process and apparatus for infinitely variably setting the U.sup.235 tails concentration in the operation of centrifuge cascades for the separation of the uranium isotopes in a gaseous uranium isotope mixture, comprising introducing a cascade feed comprising a mixture of gaseous uranium isotopes containing U.sup.235 into a feed header of an intermediate stage, equalizing the pressure in the feed header of each stage to the pressure of the cascade feed, and maintaining a predetermined U.sup.235 product concentration by manipulating a choke valve on product or tails streams from each stage, or a choke valve on the cascade feed stream to vary the ratio between the cascade feed and the cascade product stream to adjust the U.sup.235 concentration and the tails. The apparatus comprises a multiplicity of centrifuge stages connected in series as a cascade wherein a product header from each stage is connected to a feed header of the next stage in the direction of enrichment and a tails header from each stage is connected to the feed header of the preceding stage, lines connecting feed headers of all stages together, and a cascade feed line, a product line from each stage, and a tail line from each stage having choke valves located therein.