Waste of the uranium industry - Valuable raw material for reception of UO2 and U3O8

In Tajikistan during 1945-1950 operated the skilled hydrometallurgical plant (Chkalovsk-city). During operation of the plant in radioactive tailings have been accumulated 400 000 tones of radioactive waste products. Those years the plant processed uranium raw material by primitive method. Extraction of uranium from ores and concentrates were up to 40%. In 1963 the surface of radioactive tailings have been covered by the layer of the inert ground. We carried out the analysis of tailings in 54 points. As show analyses, the contents of uranium changes from 0.15 up to 0.518%. Skilled tests on extraction of uranium are carried out by the traditional technique. The output of the product makes 95-97%. Thus, one can ascertain, that from this tailing is possible to receive 200 tons of uranium by the classical way. It is offered reprocessing of Kiik-tal uranium deposit by the method of underground lixiviation of uranium with natural water using natural and artificial permeability of ore containing rocky file. Kiik-tal is located in the central part of southern slopes of Mogul-Tau. The deposit was developed during the period 1973-1987 by the method of underground lixivation without crushing the rocky file with weak sulphuric-acid solutions. On the deposit was preserved a significant stocks of uranium, that is the basis for statement of the question on continuation of uranium processing. In contrast to the accepted before technology, the offered present technology is non-polluting. At the same time it is necessary to note, that lixiviation by natural water has no precedent in the industry of extraction of uranium and it is offered as experiment. By present time in Kiik-tal deposit have been reckoned 1241 tons of uranium with average contents in ore 0.013-0.015%. Minerals of uranium of which ores of the deposit are consisted are easy soluble in water. At opening orebodies of deposits Kiik-tal by mountain manufacturing, the contents of uranium in cracks of shaft waters acting in mountain processing on separate sites was up to 78 milligram per liter. For comparison it is necessary to specify, that industrial extraction of uranium at underground lixiviation considers the contents 10 milligram per liter, that is the shaft waters of the deposit, acting from sites of orebodies, are suitable for industrial extraction of uranium. At present, 17 years later cessation of work on the deposit, from adit No.2 waters act with the contents of uranium up to 30 milligram per liter in amount of 4-5 cubic meters per hour. These shaft waters by different ways can get in the river Sirdarya. Now there is an opportunity receiving of uranium by method of solution in water in industrial scale. Besides simultaneously will be solved the ecological problem of preservation of the basin Sirdarya-river from hit of uranium connections