Patent ID: 8021601

Claim:
A plant for the heat treatment of solids containing titanium comprising: a first reactor, wherein the first reactor comprises at least one gas supply tube being at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located; a mixing chamber located above an upper orifice region of the gas supply tube such that gas flowing through the gas supply tube entrains solids from the stationary annular fluidized bed into the mixing chamber when passing through the upper orifice region of the gas supply tube; a first solids separator downstream of the first reactor, wherein the first solids separator comprises a solids conduit leading to the annular fluidized bed of the first reactor; and a second reactor downstream of the first reactor, wherein the second reactor comprises a second downstream solids separator, the exhaust gas of which is passed via a supply conduit into the fluidized bed of the first reactor.