Abstract
Mn–Zn ferrite powders were produced from low-grade manganese ore (LMO) via the chemical co-precipitation method combined with the ceramic method, after the LMO was leached in sulfuric acid and the obtained solution was purified. The effect of the pH on the magnetic properties of Mn–Zn ferrite was investigated by the varying pH of the co-precipitation system. The crystal structure and phases of the samples were characterized by X-ray diffraction and infrared spectrum, respectively. The magnetic measurements were carried out on a vibrating sample magnetometer. The optimal sample was obtained with a saturation magnetization of 55.02 emu/g, a coercivity of 8.20 G and a remanent magnetization of 1.71 emu/g when pH is 7.5.
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Acknowledgments
This study is financed by the Bureau of Land Resources and Housing Management of Chongqing (Scientific & Technologic Program in 2011), the Science and Technology Bureau of Hengyang (Scientific & Technologic Program in 2013) and the State Administration of Work Safety (Scientific & Technologic Program in 2013). The authors would like to thank Prof. LIU Chenglun for her technical assistance during the experiments.
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Chao, X., Longjun, X., Yongjun, Y. et al. Influence of pH on properties of Mn–Zn ferrites synthesized from low-grade manganese ore. Chin. J. Geochem. 34, 219–223 (2015). https://doi.org/10.1007/s11631-015-0034-x
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DOI: https://doi.org/10.1007/s11631-015-0034-x