E3S Web Conf.
Volume 126, 2019International Conference on Modern Trends in Manufacturing Technologies and Equipment (ICMTMTE 2019)
|Number of page(s)||5|
|Published online||30 October 2019|
The iron-containing electric-furnace steelmaking waste: physical and chemical properties and acidic modification
Belgorod State Tecnological University named after V. G. Shukhov,
46 Kostyukova st.,
2 Kazan National Research Technological University, 68 Karl Marx st., 420015, Russia
* Corresponding author: firstname.lastname@example.org
The electric furnace steelmaking dust is formed at melting metalized pellets in electric-arc steel-making furnaces and is a largetonnage waste. It contains such elements as Fe, Mg, Al, C, Si, Zn, Mn, Na. The ferrous and ferric iron compounds in the EFS dust are mostly presented with oxides — the compounds, which are poorly soluble in aqueous media and can’t take part in exchange reactions under ordinary conditions. The acid treatment with HCl allows obtaining a coagulating suspension, which can be usedfor wastewater treatment. Besides, there was detected up to 14 % of CaO, both free and in calcium silicates such as CaSiO3 and Ca2SiO4. So, in the process of treatment with EFS dust the formation of polysilicic acids helps increasing the purification efficiency.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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