Patent ID: 11873743
Assignee: RONDO ENERGY, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC F  B  C  H  Y | IPC B  F  H

Claim 6:
7. The method of claim 6, further comprising:
implementing a first stage of the Bayer process by heating the bauxite to a first temperature within a range from 300° C. to 480° C. at a first pressure within a range of 6 bar to 8 bar;
implementing a second stage of the Bayer process by heating the bauxite to a second temperature within a range from 750° C. to 950° C. at a second pressure that is lower than the first pressure; and
recirculating, from the second stage to the first stage, the thermal energy derived from the circulated non-combustive fluid.