Investigation of possibility for stabilization and valorization of electric ARC furnace dust and glass from electronic waste

Abstract

This paper presents investigation of possibility for electric arc furnace dust (EAFD) and electronic waste (e-waste) valorization trough stabilization process, in order to achieve concurrent management of these two serious ecological problems. EAFD is an ineviTab. waste material coming from the electric arc furnace steel production process, classified as a hazardous waste. Furthermore, it is well known that residual materials generated in the ewaste recycling process, like LCD (Liquid crystal displays) waste glass, are not suiTab. for landfill or incineration. In this study, these two materials were used for investigation of possibility for their valorization in ceramic industry. Thus, an innovative synergy of waste streams from metallurgical and e-waste recycling industry is presented. Investigation included a complex characterization of raw materials and their mixtures, using chemical methods, optical microscopy, scanning electron microscopy, as well as methods for determining the physical and mechanical properties. Based on these results, it was found that material suiTab. for use in ceramics industry as a partial substituent of quartzite and fluxing components can be produced. Besides solving the environmental problem related to EAFD and LCD disposal, by replacement of raw materials certain economic effects can be achieved. [Projekat Ministarstva nauke Republike Srbije, br. 34033]

The effect of the addition of construction & demolition waste on the properties of clay-based ceramics

“…Another advantage of using inorganic glasses is that they can incorporate large amounts of heavy metal ions, chemically bonding them inside their inorganic amorphous network [20]. Various glassy systems have been shown to be suitable for producing glass ceramic products that are thermally and mechanically stable and exhibit good chemical durability [21].…”

Archives of Metallurgy and Materials

“…The optimum extraction yields of metals without dissolving undesired components can be achieved by appropriate selections of the leaching agent, temperature and pressure. Two types of leaching media are used in EAFD treatment: acidic and alkaline, which may be oxidative and non-oxidative [8][9][10]. In EAFD, zinc is present in the form of oxide as zincite (ZnO) or franklinite (ZnFe 2 O 4 ), which is considerably resistant to leaching [11].…”