Abstract: A system for producing ceramic or cermet material in a plasma type thermal reactor wherein a reactor flame and reactants are introduced into one end of a reaction chamber through which a concentric film of collecting liquid (oil) flows and empties at the opposite end into a pool of collecting liquid. The collecting (and cooling) liquid enters the chamber at the same end the flame enters and forms a liquid wall surrounding the flame that sweeps substantially the whole inner periphery of the walls of the chamber from one end to the opposite end and empties into the pool of collecting (and cooling) liquid. Liquid from the pool is recirculated back to the one end and is filtered to remove the particulate formed from the reactants.