RT journal article
T1 Leaching of zinc for subsequent recovery by hydrometallurgical techniques from electric arc furnace dusts and utilisation of the leaching process residues for ceramic materials for construction purposes
A1 Terrones Saeta, Juan María
A1 Suárez Macías, Jorge
A1 Moreno López, Evaristo Rafael
A1 Corpas Iglesias, Francisco Antonio
A2 Ingeniería Industrial e Ingeniería Civil
K1 hydrometallurgy
K1 metallic elements recovery
K1 mining waste
K1 ceramic
K1 construction materials
K1 circular economy
K1 sustainability
AB Steel is one of the most widely used materials in the past and today. Various techniques are used to recycle this material, including the electric arc furnace. This process has several advantages, but it also has a major disadvantage, namely, the generation of waste such as electric arc furnace dusts. Electric arc furnace dusts are classified as hazardous waste due to their high percentage of heavy metals, including zinc. Consequently, in the present research, the leaching of zinc for recovery with sulfuric acid solutions at ambient temperature and atmospheric pressure is evaluated, as well as the reuse of the leaching process residue as a raw material for ceramic materials. The sulfuric acid solutions were 0.125, 0.25, 0.5, and 1 molar, using clay for ceramic conforming and percentages of the leaching residue from 0–50%. The results showed that the optimum solution was 1 molar sulfuric acid, recovering all the zinc in the sample in 36 h. Furthermore, it was found that the clay-conformed ceramics with less than 40% leaching residue showed acceptable physical and mechanical properties according to standards. Therefore, this research develops a new environmental hydrometallurgy in which metallic elements of interest are valorized and the production of waste is avoided, reducing the deposition of hazardous waste in landfills and the extraction of raw materials for the manufacture of construction materials.
PB MDPI
SN 2075-4701
YR 2021
FD 2021
LK http://hdl.handle.net/10498/35146
UL http://hdl.handle.net/10498/35146
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 14-nov-2026