Robin, On first glance, one obvious thermodynamic problem is steam – in that every fission fragment capable of knocking off a neutron is also able to boil off several hundred million molecules of heavy water in the process of thermalizing.
Consequently maintaining a liquid state with uniformly dissolved salt becomes impossible even under high pressure.. A molten salt would be feasible but not a dissolved salt in the liquid state. ➢ Please see http://rvanspaa.freehostia.com/Thorium_breeder_in_solution.html Regards, Robin van Spaandonk