《Table 2.Element content of the spots labeled in Fig.1 of zinc refinery residue by EDS》

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《Leaching behavior of zinc and copper from zinc refinery residue and filtration performance of pulp under the hydrothermal process》

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wt%

The results from the characterization of the surface morphology by scanning electron microscopy（SEM）and the elemental distribution of the raw material by energy-dispersive X-ray spectroscopy（EDS）are shown in Fig.1 and Table 2，respectively，from which it can be observed that the elemental distribution was not homogeneous.Zinc was uniformly distributed in the whole grains，Cu was mainly found in the internal area，Fe was mostly located outside，and Si was significantly accumulated on the surface of the particles.