DE1801414A1 - Mixing device for powdery nuclear fuel (A) - Google Patents

Description

ALKEM, Alpha Chemistry and Metallurgy G.m.b.H. Leopoldshafen

Mixing device for powdery nuclear fuel (A)

In the nuclear fuel industry, the task of the supplied starting material, which is in small units, is different Isotopic addition and often not with different technological properties is delivered to a to mix uniform product. The mixture becomes the most convenient in the case of powdery material. So it ought to be it can be assumed that the material to be misused is in this form.

With plutonium and also with enriched uranium there is the problem to design the system in such a way that it is criticality-safe. this leads to the fact that of the known misoh devices only those with relatively small containers or elongated ones in fora tone Cylinders with a relatively small diameter, can be used. Since, in general, an analysis must be made of every quantity mixed as a unit, it is most economical to use the largest possible mixing units to work. A mixer in the form of an elongated cylinder allows larger mixing units than a short cylinder. With increasing length, however, the cylinders become unwieldy and ultimately uneconomical. Venn, for example, the mixer Volume of 50 1 is to be obtained, its length is approximately 5 βJ with even longer mixers there is a risk that complete mixing in the longitudinal direction will no longer take place.

It has now been found that the disadvantages of the known Misoh-

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Avoid devices by daaa dar Misohraua die Fons has a * hollow cylinder, where the inside diameter is this Hollow cylindera larger than half the outer enduro haters Latin. One Such a design has on the one hand a large volume, on the other hand, it is more critical and easily feasible from a technical point of view. The illustration shows an example implementation a mixing device according to the invention.

This consists of a relatively thin Zyllnderaohale as the outer wall. Inside the outer shell 1 there is a cylinder 2, which represents the inner wall and which is provided with plow-like blades 3 and rotatable around an axis h ( Latin). there is a connecting piece 5 which can be closed off by a slide 6 opposite the mixing space 7. The outer wall of the mixer can be made from 2 half-shells that can be removed for cleaning can be found below «

Al · typical dimensions for the Mlschraua germinate Infraget

Inner diameter of the Mieohraume 400 am Outside diameter of the mixing chamber 480 cn L type ge of the mixing space 1.5 α

Volume of the mixing space 80 1

The device λ Us according to the invention is simpler A criticality-safe mixture of relatively large quantities on powdered nuclear fuel.

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Claims (3)

Patent application 1) Device for Miachen pulverulent nuclear fuel «, thereby characterized that the Miaohra.ua) has the fona ainea hollow cylinder, with the inner passage theeaea hollow cylindera grftaser iat ala half the Auaaendurohaieaaer. 2) Device according to Anapruoh 1, characterized in that the daaa Ausaenwand dea Miachrauna aua 2 Halbaohalen hergeateilt did. 3) Device according to Anspruoh 1, characterized in that the daaa Auaaenvand de · Mlschera u «die .Zyllnderaohae rotatably mounted iet. Schn / Ta October 3, 1968 0 0 9 8 2 1/11 U Blank page