The invention relates to a method for recycling iron on line from iron-containing industrial
slag and preparing a glass ceramics
frit, belonging to the technical field of resource comprehensive utilization and material preparation and mainly comprising a two-
step method process of iron-containing industrial
slag online rough adjustment and modification for reducing iron and fine adjustment and modification for preparing the
frit. The method comprises the steps of: discharging high-temperature iron-containing
slag into a high-temperature furnace device, and simultaneously adding a
reducing agent and a modifying agent to ensure that slag components are adjusted to reach the optimal component point in which
iron oxide is reduced; after fully reacted, separating reduced molten iron from the slag, and recycling to obtain high-temperature molten iron; further adding a modifying agent and an adjusting agent into the slag remained after the separation to ensure that the slag components are adjusted to achieve the quality requirement of slag glass ceramics on the
frit; and water-hardening,
drying and grading the qualified slag to prepare the glass ceramics frit. The invention realizes multiple purposes that the heat of the slag is directly utilized and
metal iron is recycled to prepare a high addition value product as well as
solid wastes are massively utilized, and the like.