Background About 4.8 million tonnes of white slag waste material are produced every year by Europe’s 300 steel plants. This is a special waste that mostly requires landfill disposal since no real widespread technology has been adopted to treat it. However, so called ‘SNOW technology’ offers new opportunities to reuse free lime components of white slag as an additive for steel production. Free lime (CaO) makes up approximately 40-45% of the white slag material and reuse of this would reduce pressures on natural limestone resources (as well as reduce the considerable energy inputs and emissions involved in converting calcareous rocks into limestone). On a European level it is estimated that more than two million tonnes of lime could be recovered from white slag, thus saving 3.6 million tonnes of natural resources from calcareous quarries. Objectives The project’s main goals focus on demonstrating the potential of SNOW technology to act as a cost-effective waste reduction and reuse solution for white slag (and associated frazzled refractory linings) from EU steel plants. An innovative system will be tested to verify optimal operational parameters for recovering free lime, dololime and magnesium oxide from white slag and exhausted refractory materials. The recovery process will include reintroducing the materials directly back into the same steelmaking process, thereby substituting 30-50% of the lime additive presently purchased. In particular, the project activities aim to: minimise electric arc furnace slag (EAF) waste; limit the negative environmental impact of slag waste and its’ disposal in landfills; reduce demands on natural resources; decrease greenhouse gas emissions; and clarify solutions to help SNOW technology to be replicated as part of a zero-slag waste steel production cycle throughout EU steel making plants. Expected results: Anticipated results include: An innovative industrial-scale prototype plant capable of successfully obtaining zero slag waste from steel making processes; Technological validation and performance analysis of the SNOW system in the ASO steel plant; Preventing some 4 500 tonnes of white slag (and frazzled refractory linings) from being landfilled; Achieving zero-slag waste steel production in the ASO steel plant; Reducing potential dust and odour sources from ASO steelmaking; Substituting some 3 600 tonnes of virgin lime with the treated white slag thereby reducing natural resource use (limestone) by the ASO steel plant; Industrial demonstration of the effectiveness of an innovative white slag recycling system that can be replicated by EU steel plants to help the sector become more resource-efficient; and Industrial demonstration of the recovery and reuse of secondary raw materials, such as those from lime that is recycled from white slag dololime.