Abstract：The import volume of cobalt increases rapidly in recent years due to the wide application of new energy technology.Some solid wastes are also declared in the name of cobalt smelting intermediates.Since the smelting intermediates of cobalt have no obvious phase structure characteristics,they cannot be accurately identified by the conventional sensory inspection and single X-ray diffraction (XRD).In this paper,XRD was combined with X-ray fluorescence spectrometry(XRF),super depth-of-field microscope,thermogravimetric analysis and scanning electron microscope(SEM) for the attribute identification of two intermediates in hydrometallurgy of cobalt which had no obvious diffraction peaks.The comprehensive characterization results showed that two cobalt-containing materials were cobalt hydroxide,which belonged to the intermediate products in hydrometallurgy of cobalt.The confirmation of sample source provided scientific basis for the customs supervision and resource utilization.
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