Copper Removal from Molten Ferrous Scrap. A Pilot Plant Study.
NTIS: PB 234 054 :11 pages
The Bureau of Mines successfully demonstrated, on a pilot plant scale, a sodium sulfate (na2so4) refining process for removal of copper from molten ferrous scrap. Previous tests established technical feasibility on a bench scale for achieving low copper concentrations and determining the principal factors controlling process efficiency. The pilot plant study involved a 1-ton arc furnace for melting ferrous scrap and a 1 1/2-ton treatment ladle. Results of these tests showed that copper removals obtained in laboratory tests (approximately 40 relative percent copper removal with 10 weight-percent surface addition of sodium sulfate) could be achieved on the pilot plant scale when excess carbon was added with the sodium sulfate compacts. Data were obtained on temperature losses and carbon consumption related to na2so4 treatment.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 234 054