The invention discloses a 
production line and a technology for producing metallized furnace burden by 
blast furnace gas ash and belongs to the technical field of 
metallurgy and mineral 
engineering, aiming at solving the problems of an existing technology that the grade and the 
metal conversion ratio of 
zinc oxide and the iron grade in 
kiln slag are relatively low, the content of the 
zinc oxide inthe 
kiln slag is too high and resources are wasted. The 
production line comprises a 
rotary kiln, a range hood, a 
chimney, a heat-preservation and 
settling chamber, a cooler, a bag-type 
dust collector,a cooling cylinder and a 
magnetic separator; the technology comprises the following steps: mixing raw materials, reducing the 
kiln slag, cooling the materials, carrying out magnetic selection and separation, carrying out heat preservation and 
settling, bonding and depositing, returning the materials and preparing the materials, carrying out dust removal and dust collection and discharging 
tail gas. According to the 
production line and the technology, disclosed by the invention, beneficial elements including iron, 
zinc and the like in the zinc-extracted kiln slag of the 
blast furnace gas ash are sufficiently utilized and the zinc-extracted kiln slag of the 
blast furnace gas ash are treated by adopting a 
rotary kiln carbon-
hydrogen combined reduction and carbon circulating 
oxygenation reduction method; the iron grade in the treated kiln slag can reach 54 percent or more, the content of the zinc 
oxide reaches 0.4 percent or lower and the 
metal conversion rate reaches 90 percent or more;the requirements on converter production are completely met.