| Title |
Reduction Rate and Dezincing of Pellets Made of Blast Furnace Sludge |
| Authors |
조종민(Chong Min Cho); 김태동(Tai Dong Kim); 김영준(Young Jun Kim); 박윤출(Yeoun Chul Park) |
| Abstract |
Pellets made of blast furnace sludge were reduced utilizing mixed carbon in CO 30%-N₂70 % gas mixture, and effects of carbon content and temperature on reduction rate were studied. Swelling was observed when the pellets were reduced at 900-1,000℃, while sintering occurred at temperatures above 1,100℃. Reduction rate of iron oxide increased rapidly when the carbon content and/or temperature were increased. Formation of low-melting slag retarded the reduction rate. In order to accomplish dezincing process effectively, reaction temperature should be kept above 1,000℃. |