Uranyl hydrogel leaching as one of technological nodes of sol-gel process. Part 1

Transport processes are described on the basis of ideas of the mechanism of the transport of leachable components from gel particles of a solidified uranyl. A mathematical model was constructed describing the process of the leaching of the monodispersion of gel particles. An apparatus was developed for testing the process of leaching gel particles of the coarse fraction, which meets the demands of semicontinuous operation, remote control, pneumatic mixing and the pneumatic transport of leaching solutions, attaining optimal concentration gradient for leaching. The diagram of the leaching apparatus and the mode of operation are given. (J.P.)