Brief description of the dissolution of the solid materials, in particular of solid fuels of reactor resonance, and unit for dissolving intended for the implementation of this

摘要

In order to dissolve a solid such as a solid nuclear reactor fuel in a liquid such as nitric acid, there is used a rectifier apparatus (2) having a sieve plate column (3) and a sump (4) at the lower end of the sieve plate column (3). The solid and the liquid are introduced into the sieve plate column (3) and conducted in co-current flow through the sieve plate column (3) to the sump (4), while gas is passed in counter-flow to the solid and the liquid from the sump (4) through the sieve plate column (3), and the liquid containing the dissolved solid is drawn off from the sump (4). IMAGE