An Experimental Study on the Reduction Behavior of Dust Generated from Electric Arc Furnace

Abstract

To improve the utilization value of electric arc furnace dust (EAFD) containing zinc, the reduction behavior of non-agglomerate dust was investigated with carbon and ferrosilicon in an induction furnace. The experimental results show that when the temperature increases, the zinc evaporation rate increases. When the reducing agent is carbon, zinc evaporation mainly occurs in the range of 900–1100 °C. When the reducing agent is ferrosilicon, zinc begins to evaporate at 800 °C, but the zinc evaporation rate is 90.47% at 1200 °C and lower than 99.80% with carbon used as a reducing agent at 1200 °C. For the carbon reduction, the iron metallization rate increases with a rise in the temperature. When the reducing agent is ferrosilicon, with an increase in temperature, the metallization rate first increases, then decreases, and finally, increases, which is mainly due to the reaction between the metallic iron and ZnO. In addition, the residual zinc in the EAFD is mainly dispersed in the form of a spinel solution near the metallic phase.

Thermodynamic, pyrolytic, and kinetic investigation on the thermal decomposition of polyvinyl chloride in the presence of franklinite

“…Aside to landfilling, the scientific community has directed significant endeavour towards the utilisation of EAFD as a source of zinc by means of hydrometallurgical (Al-Makhadmeh et al, 2018;Laubertova et al, 2020;Oustadakis et al, 2010;Teo et al, 2018) and pyrometallurgical (Omran et al, 2019;Sinaga et al, 2019;Ye et al, 2020;Zhang et al, 2019) treatment routes. Currently, the latter has reached an industrial level.…”

Possibilities of using materials from steel dust recycling in the production of alloy steels

“…Dust from electric arc furnaces is placed in a rotary furnace loaded with coke [8][9][10]. Coke and CO (from partial oxidation of carbon) reduce zinc oxide to metallic zinc [8,[11][12][13][14][15]. The resulting slag is crushed with crushing and then used in road construction as a construction material.…”

Fe-mediated synthesis of N-aryl amides from nitroarenes and acyl chlorides

“…In addition, Fe dust is a cheap and safe reducing agent and can be used in many organic reactions. 23,24 We are interested in Fe-promoted organic reactions performed in water. Therefore, we developed a mild Fepromoted reaction of nitroarenes with acyl chloride (uoride) using water as solvent in this work.…”