33Waste from Metal Processing Industries
(Legemza, 2004). The zinc present in the converter sludge and dust has been exam-
ined for potential desulfurization of steel on the laboratory scale (Kumar and Liu,
2011). Dolomite sludge mix was prepared by mixing the sludge with nes in ue
gas resulting from calcinations/ sintering of dolomite; when added to iron ore nes,
this mix prevented dusting and free owing material for blast furnaces could be
obtained (Agrawal and Pandey,2005).
2.1.2.2 Metal Recovery
BF sludge has been subjected to a hydrometallurgical route for zinc extraction. The
sludge was leached with sulfuric acid under different operating conditions and it
was observed that microwave leaching yielded quicker and higher recovery of ...