Abstract:The lack of copper ore resources has gradually increased the external dependence on copper ore and its concentrate with the rapid development of industry in China. The correct identification of copper ore and its concentrate as well as copper-containing solid waste is helpful to maintain the national production safety and environmental safety.The phase analysis and element composition analysis were carried out for four batches of imported copper-containing materials with similar appearance and declared product named "copper concentrates". The relevant literatures were consulted and the traceability analysis of production process were conducted. The identification characteristics of copper concentrate and copper-containing solid waste were obtained. The results indicated that four batches of copper-containing materials that have been submitted for import were typical copper sulfide ore, copper-bearing sludge, yellow slag, and copper scum. The typical copper concentrate consisted of chalcopyrite, malachite, copper oxide and other natural copper-bearing minerals. The content of copper, sulfur and iron was relatively high, and the content of toxic elements such as lead, arsenic and antimony were low. The crystallization degree of copper-containing sludge was low, and it contained high content of non-metallic elements such as calcium and phosphorus. The lead smelting copper-containing solid wastes such as yellow slag and copper scum were mainly composed of the compounds containing arsenic, antimony and other elements, and the contents of toxic elements such as lead, arsenic and antimony were high. The proposed method provided reliable technical support for the identification of copper concentrates and copper-containing solid waste by X-ray diffraction (XRD) and X-ray fluorescence spectroscopy (XRF) as well as material production process, accelerating and improving the identification rate of copper-containing solid waste.
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