Copper removal from solid ferrous scrap by a solid/gas.
Hartman-AD; Oden-LL; Davis-DL
Iron Steelmak 1994 May; 21(5):59-62
The copper contained in scrap steel can be effectively removed by treatment with air - HCl mixtures at about 800 degrees C. In experimental studies, the formation was found gaseous CuCl2 in gas-solid reaction. The iron components were protected by forming an oxide layer. In case of insufficient protection of the iron surface ( at temperatures below 800 degrees C ) there were copper deposits on the iron. Currently, a 70 - kg furnace is used to treat shredder scrap from cars in testing.
Steelmaking; scrap steel; copper; gas-solid reaction; hydrochloric acid; copper chloride; experimental investigation; accompanying element contamination; oxide; practical examination; decopperizing; Scrap iron; Recovery metals; Electric steel plant; Steelmaking; Gibbs free energy; Experimental study
Iron & Steelmaker