CS240019B1 - Equipment for the production of uranium oxide granite from uranium metal chips - Google Patents

Abstract

The device for the production of uranium oxide from uranium metal chips or uranium metal waste with a sufficient specific surface area suitable for combustion is provided. In the combustion chamber, which is part of the device, a loading hole and at least one air supply control element are arranged. A connecting pipe is led out from the upper part of the combustion chamber, which is connected to the lower part of the scrubber under the grate on which the charge is placed. ■ At least one shower nozzle is placed above the charge. The upper part of the scrubber is provided with an exhaust pipe with at least one air exhaust control element. The lower part of the scrubber is connected to at least one settling tank, connected by a waste pipe to the radioactive waste water circuit.

Description

The present invention provides an apparatus for producing uranium uranium oxide from uranium metal chips, which comprises a combustion chamber.

At present, uranium compounds from uranium metal chips, for example depleted or natural uranium, are produced by a chemical process which utilizes in particular the solubility of uranium in nitric acid. However, the dissolution of uranium in nitric acid is accompanied by the formation of nitrous gases and other poorly absorbable gaseous pollutants, which have a negative impact on the environment and occupational safety and whose collection or spraying with air to a permissible concentration has many other disadvantages.

The aforementioned drawbacks are largely eliminated by the uranium uranium oxide production apparatus of the uranium metal chips according to the invention, characterized in that a charging hole and at least one air supply control element are provided in the combustion chamber which is part of the apparatus. From the upper part of the combustion chamber there is a connecting pipe, which is connected to the lower part of the scrubber under the grate on which the charge is placed. At least one spray nozzle is located above the filling. The upper part of the scrubber is provided with an exhaust duct with at least one air exhaust control element. The lower part of the scrubber is connected to at least one settling tank connected by a waste pipe to a radioactive wastewater circuit.

When processing uranium metal chips in a device according to the invention, they are controlled by oxidation without the formation of nitrous gases, which endanger safety and the environment. The design of the device and its connection to a suitable water and air-conditioning system ensures permanent protection of workers from the effects of ionizing radiation and from the influence of radioactive aerosols. Compared to the chemical recovery of uranium uranium oxide from uranium metal chips, the use of the device according to the invention also results in a significant increase in labor productivity and a lower energy demand. The uranitoursin oxide produced can be used directly for dyeing glass batches and ceramic coatings.

In the accompanying drawing, a longitudinal section schematically shows a device for producing uranium uranium oxide according to the invention.

The device for producing uranium uranium oxide from uranium metal chips is formed by a combustion chamber 1 in which the combustion chamber J is walled by a lining 2. In the combustion chamber 1 there is a charging hole 4 and at least one air supply control element 2. From the upper part of the combustion chamber 2 there is a connecting pipe 6, which is connected to the lower part of the scrubber 7 under the grate 8, on which the charge 2 is placed. Above the charge 2 3 ^{e there} is placed at least one shower nozzle 10. the fluid flow control element 12. The upper part of the scrubber 7 is provided with an exhaust duct 13 and at least one exhaust air control element 14, which is connected to the respective ventilation system. The lower part of the scrubber 7 is connected to at least one settling tank 15 connected by a waste line 16 to a radioactive wastewater circuit.

Prior to the oxidation of the uranium metal chips in the combustion chamber 2 of the combustion chamber 1, a suitable liquid flow from the shower nozzles 10 is not first set up through the liquid flow control element 12 onto the cartridge 2 stored in the scrubber 2.

Furthermore, by means of the air supply control elements 2 and the air exhaust control elements 14, a suitable air flow through the device, i.e. the combustion chamber 2j, is further set via the connecting line 6, grate 8 with filling 2 ^{in the} scrubber 7 to the exhaust line 13. a specified amount of uranium metal chips is introduced into the chamber 2, the oxidation of which is initiated by the appropriate temperature. The oxidation control is carried out by adding uranium metal chips to the combustion chamber J of the combustion chamber 2 and by means of the air supply control elements 8 of the air exhaust control elements 14.

The device according to the invention is intended for the production of uranium uranium oxide from uranium metal chips or uranium metal waste with a sufficiently large specific surface area for incineration, which may also contain organic impurities and admixtures of other metals.

Claims (1)

SUBJECT OF THE INVENTION 240 019 Apparatus for producing uranium uranium oxide from uranium metal chips or uranium metal scrap having a sufficient specific surface, comprising a combustion chamber, characterized in that from the upper part of the combustion chamber (1) in which the charging hole (4) is provided and at least one regulating chamber an air supply element (5), a connecting duct (6) extends into the lower part of the scrubber (7) under the grate (8) with the filling (9), above which at least one shower nozzle (10) is located, * * (7) is provided with an exhaust duct (13) with at least one exhaust air control element (14), while the lower part thereof is connected to at least one settling tank (15) connected by a waste duct (16) to a radioactive wastewater circuit .