Facile Synthesis of Spinel Ferrites with Enhanced Magnetic Properties from Two Intractable Metallurgical Resources: Zinc-Bearing Dust and Nickel Laterite Ore
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Nickel laterite ore and zinc-bearing dust are multi-metal-associated and intractable resources. Comprehensive and cooperative utilization of zinc-bearing dust and nickel laterite ore for the preparation of spinel ferrites with enhanced magnetic properties by a facile process was proposed. The structure and magnetic properties of as-prepared spinel ferrites were characterized by X-ray diffraction (XRD), Raman spectroscopy, and Physical Property Measurement System (PPMS). The effect of mass ratios of zinc-bearing dust to nickel laterite ore, calcination temperature, and Zn substitution content on the as-prepared samples was investigated in detail. A single phase of Zn-substituted spinel ferrites (x= 0.00, 0.10, 0.20, and 0.30) could be obtained when the mass ratios were controlled at 1:0.4, 1:4:1.8, 1:2:1.5, and 1:1:1.2 after being calcined at 900 ∘C for 30 min, respectively. The magnetic property tests present that the as-prepared spinel ferrite exhibits enhanced magnetic properties with the saturation magnetization (Ms) value of 66.8 emu g− 1 and the coercivity (Hc) value of 26 Oe when the mass ratio was controlled at 1:1:1.2. This research could provide an effective way to transfer two intractable resources into soft magnetic materials.
KeywordsNickel laterite ore Zinc-bearing dust Spinel ferrite Magnetic property Zn substituted
The work was financially supported by the National Key R&D Program of China (No. 2017YFB0603102), the Program for Sanjin Scholars of Shanxi Province, the National Natural Science Foundation of China (Nos. 51272025, 50872011, and 51072022), and the National Basic Research Program of China (Nos. 2014CB643401 and 2013AA032003).
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Conflict of interests
The authors declare that they have no conflict of interest.
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