Comparison of microwave and conventional processing stainless steelmaking dust to prepare black ceramic pigments
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Using stainless steelmaking dust (SSD) for the preparation of black ceramic pigments can not only reduce pollution, but alsohave more considerable economic, environmental and social value. Black ceramic pigments with the mixed spinel-type wereprepared from SSD by microwave and conventional processing, respectively. The properties of black ceramic pigments werestudied by X-ray diffraction, Fourier transform infrared spectroscopy, Scanning electron microscope and Colorimeter. Theresults show that the main phase compositions of pigment sample synthesised by microwave processing are Fe3O4, FeCr2O4,NiFe2O4 and NiMn0.5Cr1.5O4. Compared with conventional processing, microwave processing can significantly reduce therequired temperature of spinel formation reaction and promote the reaction. Moreover, the pigment sample prepared bymicrowave processing (PSM) is blacker and has a lower band gap than that prepared by conventional processing (PSC). Themicrostructure of PSM is regular polyhedral, and the crystal size of it is significantly larger than the PSC. In addition, thepreparation process of PSM is more efficient and has a better application prospect compared with PSC.
Abstract
Using stainless steelmaking dust (SSD) for the preparation of black ceramic pigments can not only reduce pollution, but alsohave more considerable economic, environmental and social value. Black ceramic pigments with the mixed spinel-type wereprepared from SSD by microwave and conventional processing, respectively. The properties of black ceramic pigments werestudied by X-ray diffraction, Fourier transform infrared spectroscopy, Scanning electron microscope and Colorimeter. Theresults show that the main phase compositions of pigment sample synthesised by microwave processing are Fe3O4, FeCr2O4,NiFe2O4 and NiMn0.5Cr1.5O4. Compared with conventional processing, microwave processing can significantly reduce therequired temperature of spinel formation reaction and promote the reaction. Moreover, the pigment sample prepared bymicrowave processing (PSM) is blacker and has a lower band gap than that prepared by conventional processing (PSC). Themicrostructure of PSM is regular polyhedral, and the crystal size of it is significantly larger than the PSC. In addition, thepreparation process of PSM is more efficient and has a better application prospect compared with PSC.
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