1794. KALBACH, J.C., DEMARCHI, V.S.. AND SULLIVAN, F. W.. JR. (Inland Steel Co.). Method of Reducing Metallic Oxides. United States Patent 2,538,201, Jan. 16, 1951; appl. filed Aug. 17, 1944. Serial No. 549,914; 5 claims (Cl. 75-26). Chem. Abs., vol.

PATENTS

1794. KALBACH, J. C., DE MARCHI, V. S., AND SULLIVAN, F. W., JR. (Inland Steel Co.). Method of Reducing Metallic Oxides. United States Patent 2,538,201, Jan. 16, 1951; appl. filed Aug. 17, 1944. Serial No. 549,914; 5 claims (Cl. 75-26). Chem. Abs., vol. 45, 1951, p. 2843.

Object of invention is to provide methods and apparatus for establishing and maintaining suitable material transfer, heat exchange, and temperature conditions in metallurgical operations on solid material in a fluidized state, particularly in the reduction of oxides of heavy metals with H₂ and/or CO. 15 United States patents cited.