1985 Volume 71 Issue 15 Pages 1759-1764
A development was made on dry removal method of zinc in dry dust. This dust is precipitated from the blast furnace gas cleaning system, that is called BDC, which was installed at No. 2 blast furnace in Kokura steel works of Sumitomo Metal Industries, Ltd., in 1982.
An air separator was adopted for removing zinc. Separation efficiency of this system was found to be equal to or higher than that of the wet cyclone system. This dry removal method of zinc was installed in April, 1984 and is working satisfactorily. The removal ratio of zinc is 85% and recovery ratio of coarse particles for sintering plant is 50%.
