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so that the converter slag and silicon steel powder dry

20201113ensp enspThe state of the art for the recovery of metals from steel industry byproducts using hydrometallurgical processes is reviewed The steel byproducts are different slags dusts and sludges from a blast furnace BF basic oxygen furnace BOF electric arc furnace EAF and sinter plant as well as oily mill scale and pickling sludge The review highlights that dusts and sludges are harder