Utilization of steel melting electric arc furnace slag for development of vitreous ceramic tiles

Abstract

Steel melting through electric arc furnace route is gaining popularity due to its many advantages, but generates a new waste, electric arc furnace slag, which is getting accumulated and land/mine filling and road construction are the only utilization. This slag has been tried to be value added and utilized to develop vitreous ceramic tiles. Slag, to the extent of 30-40 wt% with other conventional raw materials, were used for the development in the temperature range 1100-1150°C. The fired products showed relatively higher density with shorter firing range and good strength properties. Microstructural and EDAX studies were also done to evaluate the developed products.

Recycling of Malaysia’s electric arc furnace (EAF) slag waste into heavy-duty green ceramic tile

“…As opposed to electric arc furnace (EAF) slag, blast furnace (BF) slag has been successfully utilized for ceramic tile due to its low iron oxide content (0.5-1.5 wt.%) (Ghosh et al, 2002). Unfortunately, the high iron oxide content in EAF slag (30-34 wt.%) tends to reduce densification range of ceramic tile, leading to incomplete sintering process (Sarkar et al, 2010) and eventually yields tile with high closed porosity (Badiee et al, 2008). Due to these reasons, water absorption and flexural strength of the ceramic tile deteriorated.…”

Chemical and Mineralogical Characterization of Ghanaian Foundry Slags

“…However, there is a great demand for aggregate in the Civil Engineering industry in Ghana, especially in the construction of road and production of Portland cement. In other countries, such as Western Europe and in the U.S.A, blast furnace slag is widely known to serve as raw material for cement production as well as concrete manufacturing unit due to the presence of pozzolonic activity [6,11,12]. Electric arc furnace (EAF) slag cannot be used for such purposes due to its high iron content.…”

Preparation and Coloration of Colored Ceramics Derived from the Vanadium‐Titanium Slags

“…Jonker and Potgieter reported that Fe-rich wastes could be used as a good flux for ceramic production and increase the strength of ceramics [2]. Sarkar et al investigated the possibility of fabrication of vitreous ceramics in a steel-melting electric arc furnace slag [3]. ey found that a certain amount of slag with other conventional raw materials could be used for sintering at a range of 1100-1150°C.…”