fThe possibility of using a computer program to calculate three groups of proceses-fluoridation of uranium compounds, reduction of UF6, pyrohydrolysis, and reductive pyrohydrolysis of UF6-is studied. It is established that calculations make it possible to take account of the specific features of the processes in the basic technology and reprocessing of depleted UF6 and to make an assessment of the desirability and regimes of reactions which are not investigated experimentally. It is shown that the dependences of the temperature generated in the process on the amount of heat removed can be used to estimate the geometry of flame reactors.