Study on Recovery of Zinc from Metallurgical Solid Waste Residue by Ammoniacal Leaching
Metallurgical solid waste residue derived from lead and zinc smelting, steel dust, and galvanized steel scrap that is important secondary sources of zinc and other valuable metals. In order to realize recycling utilization of zinc secondary resource, a clean zinc production process of zinc recovery from metallurgical solid waste residue in NH3–(NH4)3AC–H2O system is investigated. It was found that the addition of (NH4)3AC to a NH3–H2O system promotes the zinc extraction, and 78.59% of zinc could be leached and recovered from the metallurgical solid waste residue under the following conditions: total ammonia concentration of 5 mol/L, stirring speed of 400 rpm, ammonia/ammonium ratio ([NH3]/[NH4]+) of 1:1, solid/liquid ratio of 1:4, leaching temperature of 35 °C, and a leaching time of 30 min.
KeywordsMetallurgical solid waste residue Metallurgical solid waste residue Ammoniacal leaching
The authors are grateful for the financial support from Guizhou provincial colleges and universities science and technology top-notch talent support program project (KY 066), the key cultivation disciplines of Liupanshui Normal University (LPSSYZDPYXK201708), high-level talent research start-up fund of Liupanshui Normal University (LPSSYKYJJ201707).
- 11.Li SW, Ma AY, Yang K, Yin SH, Zhang LB, Peng JH, Chen WH, Xie F (2016) Alkaline leaching of zinc from low-grade oxide zinc ore using ammonium citrate as complexing agent. Green Process Synth 4:219–223Google Scholar