| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.38 ( April 1998 ) Ironmaking Technology and Tubular Products Technology ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development of a Smelting Reduction Process
for Recycling Steelmaking Dust Shinji Hasegawa, Haruo Kokubu, Yoshiaki Hara |
| Synopsis: Kawasaki Steel has developed, in Chiba Works, a new smelting reduction process for the recycling of the steelmaking dust containing valuable metals. This process is characterized by a coke packed-bed shaft furnace with two-stage tuyeres (STAR process) which enables direct use of dust without agglomeration. Bench-scale and pilot-plant tests were carried out to confirm the principles and effectiveness of the process. A commercial plant with the metal production of 140 t/d started its operation in May, 1994 and has been operating successfully. Development of the STAR process has enabled to improve the retrieving ratio of metallic sources (Fe, Cr, Ni) contained in steelmaking dust. |
| TextiPDF: 6p./255kbj |