Abstract: The oily sludge of tank bottom is enriched with saturated hydrocarbon， aromatic hydrocarbon， asphalt， colloid and many other organic component， among which the asphaltene and colloid have strong stickiness. In order to explore the feasibility of the cold bonded ferrovanadium residues to prepare the pellets and its reduction and recovery effect to the Pb， Zn， Fe from ferrovanadium residues，the systematic process conditions tests were conducted in details and the reduction mechanism was analyzed by XRD and SEM-EDS techniques. The results showed that the contents of Fe， Zn and Pb are 26.76%， 6.95% and 3.01% in ferrovanadium residues respectively. When the mass ratio of oily sludge from Beijing Yanshan Petrochemical Company/CaO/ferrovanadium residues from Hanzhong Zinc Industry Co.， Ltd. was 40∶30∶100，the pellets-formed pressure was 10 MPa，the compressive strength and drop strength of the raw pellets prepared by oily sludge-ferrovanadium residues were 253.33 N and 7 times respectively. The compressive strength and drop strength of the cold bonded pellets were 301.67 N and 8.67 times respectively when the raw pellets was dried at 100 ℃ for 30 min. The roasted products with the evaporation rate of lead 81.10% and zinc 99.56%， and iron metallization rate of 82.86% were obtained from the cold bonded pellets at 1 250 ℃ for 90 min. Metallic iron powder with iron grade of 90.34% and recovery of 14.82%，and iron concentrate with iron grade of 65.20% and recovery of 55.54% ， irontotal recovery of 70.35%were obtained through grinding（-74 μm 66.52%）- middle magnetic separation （at 477.71 kA/m）- regrinding （-38 μm 90.80%）- low magnetic separation （roughing at 207.01kA/m and cleaning at 16.56 kA/m）. Therefore， the oily sludge of tank bottom is proven to be used as a binder and reductant for ferrovanadium residues preparing cold bond pellets.

Key words: Oily sludge of tank bottom, Ferrovanadium residues, Cold bond pellets, Binder, Reductant