The pyrometallurgical recovery of zinc from electric arc furnace dust (EAFD) with active carbon

Abstract

The reduction of minor impurities (e.g., Ferrite, Magnesium, Lead, Chromium) from Zinc rich-EAFD with active carbon addition was investigated at temperature between 900-1300 °C. The result was powder with higher zinc content which then analysed by X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD) and scanning electron microscope (SEM) equipped with X-Ray energy dispersive spectrometry (EDS). The thermogravimetry (TG) and differential thermal analysis (DTA) of EAFD and carbon mixture was conducted previously to grasp the temperature of thermic reaction of mixture. Recovery of 90wt% zinc from EAFD available was achieved up to 99.2wt% after the pyrometallurgy process at temperature 900 °C in atmosphere pressure while the extension of the time corresponds to the amount of recovered zinc dross.

Zinc Evaporation from Brass Scraps in the Atmosphere of Inert Gas

“…Cupriferous wastes are, e.g., casting waste, copper smelting dusts or flotation tailings. In this area, the offered solutions with regard to zinc removal from these wastes are primarily based on pyrometallurgical [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ] and hydrometallurgical [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ] processes. In hydrometallurgical processes, various leaching materials are applied such as sulphuric acid, hydrochloric acid, acetic acid or ammonia solutions.…”

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.…”