| Hybrid Hydro-pyrometallurgical Process for Zn Recovery from Electric Arc Furnace Dust |
| Paper ID : 1094-ICEE (R1) |
| Authors: |
|
Rana Adel Azab *1, Nabil Abd E-lmonem2, Moustafa Aly Soliman3, Ibrahim Ismail4, Ahmed Ahmed Refaat5 1Chemical Engineering Department, Faculty of Engineering, The British University in Egypt, Cairo, Egypt 2Professor in Cairo University 3Chemical Engineering Department, Faculty of Engineering, The British University in Egypt (BUE) El-Sherouk 11837, Cairo, Egypt 4chemicaL ENGINEERING cAIRO UNIVERSTY 5Chemical Engineering Department, Faculty of Engineering, Cairo University, Cairo, Egypt Faculty of Engineering, King Salman International University, Sinai, Egypt |
| Abstract: |
| Electric arc furnace dust (EAFD) mostly includes Zinc (Zn), iron (Fe), and significant quantity of dangerous elements. This waste is considered hazardous, as it is hazardous for water sources if not well treated or stored. The main objective of the proposed process is the recovery of Zn from EAFD by using a hybrid pyro/hydrometallurgical process, so the Zn can be collected and used in other processes, while the remaining residue can be recycled back to the furnace. During this process cement dust and EAFD are mixed and heated in a muffle furnace. Then the produced mixture is then leached in sodium hydroxide (NaOH) solution using different S/L ratios and time intervals. Finally, the recovery of Zn from the leached solution is carried out electrochemically. About 82 % of the Zn originally presented in the EAFD sample was successfully extracted by using a treatment mixture of 2:1 cement dust: EAFD at 1000 °C for 2 hrs, then leaching with 2M NaOH solution with a S/L ratio of 1/20 for 6 hrs at a stirring rate of 250 rpm. |
| Keywords: |
| EAFD; cement dust; leaching; pyro/hydrometallurgical process |
| Status : Paper Accepted |
