Abstract: The paper describes the properties, test and test results of Meishan BF sludge and the methods for treating zinc-containing BF sludge used in and outside China. In light of the properties of Meishan BF sludge, beneficiation method is used in the test on its iron recovery and zinc reduction. The results show that both low intensity and high intensity magnetic separation can recover most of the iron minerals from the sludge, remove most of zinc and realize an effective separation of high zinc from low zinc materials. The obtained iron concentrate has a yield and grade of both over 52%, iron recovery of 70.00% and a zinc removal rate of over 50%, making it possible to still use the BF sludge after zinc removal as iron-making material.

Key words: BF sludge, Magnetic separation, Zinc reduction