Abstract：With the increasing import volume of tin ore year by year and the increasing complexity of material properties, it becomes especially important to use scientific and efficient methods to identify the properties of mineral products. The elemental composition and content, phase composition and content, and the microscopic morphology of one imported tin-containing material were analyzed by comprehensive means including X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), and automatic mineral liberation analyzer (MLA). Whether this sample was solid waste was identified. The results showed that the main elements of the sample were tin, tungsten, iron, manganese, silicon, calcium and aluminum and other elements. The tin content (mass fraction, the same below) was 25.22%, which was lower than the grade requirement of YS/T 339-2011 of Tin concentrate. The tungsten content was 20.01%, which could meet the grade requirement of fine tungsten slime in YS/T 231-2015 of Tungsten concentrate. The metal minerals in the sample were scheelite, wolframite, cassiterite and a small amount of ferberite and goethite, The vein components were tourmaline and quartz, which were consistent with the composition characteristics of natural tin ore and tungsten ore. No smelting processing products with melting structure characteristics were found. The sample source may be the oxide minerals containing tungsten, tin, iron, and manganese and other polymetals after separation from the waste rock followed by crushing, separation, jigging, dewatering, shaking bed and other beneficiation processes. According to GB 34330-2017 of Identification standards for solid wastes-General rules, this sample did not belong to solid waste.The proposed method could provide technical support for solid waste identification and customs port supervision.
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