Abstract：In recent years, the smuggling and importing of zinc-containing waste in the name of zinc oxide enrichment happen occasionally. The traditional X-ray diffraction (XRD) method has some limitations for the identification of complex zinc-containing material, and some characteristic phases that are helpful for the identification cannot be identified by XRD patterns. The comprehensive characterization technology, including appearance characterization, X-ray fluorescence spectrometry (XRF), XRD and super-depth microscopic analysis, was used for identification of solid wastes in a batch of materials with the declared name of zinc-containing oxide. XRF was used to characterize the elements contained in the materials, and XRD was used to identify their phases. In addition, super-depth microscopic analysis could visually show the phases and their details. The results of comprehensive characterization indicated that the sample was mainly composed of zinc, copper, silicon, aluminum and other elements. The phase composition included zinc oxide, zinc silicate and brass. There were obvious spherical and adhesive metal particles in the sample, and some local areas presented a mixed state of metal particles and slag inclusions. Based on the characterization results, it was comprehensively determined that the material was the dust recovered in the copper-zinc alloy smelting process, which belonged to the solid waste.
严文勋, 封亚辉, 张彰, 王慧, 黄可, 郑建明. 一例进口含锌物料固体废物属性鉴别探讨[J]. 冶金分析, 2023, 43(3): 16-20.
YAN Wenxun, FENG Yahui, ZHANG Zhang, WANG Hui, HUANG Ke, ZHENG Jianming. Discussion on identification of solid waste for one case of imported zinc-containing material. , 2023, 43(3): 16-20.
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