Utilization of Zn-containing electric arc furnace dust for multi-metal doped ferrite with enhanced magnetic property: From hazardous solid waste to green product

作者：Wang, Hui-gang; Zhang, Mei; Guo, Min^*

来源：Journal of Hazardous Materials, 2017, 339: 248-255.

DOI：10.1016/j.jhazmat.2017.06.039

• Zn-containing EAFD
• Solid reaction method
• TCLP
• Green metal doped Ni-Zn ferrite
• Magnetic property

One-step solid state reaction method was proposed for the first time to realize the transformation of the Zn-containing EAFD from hazardous solid waste to multi-metal doped ferrite with enhanced magnetic property. The effect of Zn-containing EAFD to NiCl2 center dot 6H(2)O mass ratio (R-zE/N, g.g(-1)) on the phases transformation was investigated by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Raman spectroscopy. The as-synthesized samples were treated by toxicity characteristic leaching procedure (TCLP). It is shown that the TCPL played a key role in determining both the purity and toxicity of the obtained ferrites. The pure metal doped Ni-Zn ferrite with higher saturation magnetization (Ms, 56.8 emu.g(-1)) and lower coercivity (Hc, 58.5 Oe) was gained under the optimum conditions. And the pure ferrite was a green product according to the TCLP and EN12457 standards. Moreover, the evaluation of environmental impact and the recovery ratio of the dust were also discussed.

• 出版日期2017-10-5
• 单位北京科技大学