Clean recycling of zinc from blast furnace dust with ammonium acetate as complexing agents. Issue 9 (13th June 2018)

• Record Type: Journal Article
• Authors: Ma, Aiyuan; Zheng, Xuemei; Zhang, Libo; Peng, Jinhui; Li, Zhi; Li, Song; Li, Shiwei
• Is Part Of: Separation science and technology. Volume 53:Issue 9(2018)
• Page Start: 1327
• Page End: 1341
• Publication Date: 2018-06-13
• Subjects: Ammonium acetate -- blast furnace dust (BFD) -- coordination leaching -- zinc extraction; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2018.1444057
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Blast furnace dust (BFD) from ironmaking and steelmaking process is important secondary sources of zinc and other valuable metals. To realize recycling utilization of zinc secondary resource, a clean zinc production process using NH3 -CH3 COONH4 -H2 O as leaching agent has been developed. It was found that the addition of CH3 COONH4 to NH3 -H2 O system promotes the zinc extraction, and 77.79% (8.23g/L) of Zn could be dissolved. The leaching process is controlled by the diffusion and interface transfer, and the corresponding activation energy E a is 22.32 kJ/mol. The results of Fourier transforming infrared spectrum (FT-IR) and Electrospray ionization mass spectrometry (ESI-MS) analysis showed that zinc can combine with the carboxylate anion to form Zn-complexes.