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.