Abstract：In order to recover the copper from flash smelting slag and flash converting slag in copper smelting process, the elements in samples were firstly analyzed by X-ray fluorescence spectrometer (XRF). Then, the phase composition of flash smelting slag and flash converting slag was determined by X-ray diffractometer (XRD). Finally, the content of each phase was analyzed by Rietveld full spectrum fitting method. It was found that the main phases of flash smelting slag were Fe2SiO4 and Fe3O4 with mass fraction of 75.04% and 24.96%, respectively. The main phases of flash converting slag were ZnFe2O4, Ca4Fe9O17, Ca2Fe2O5, CuFeO2, Cu2O, Cu and PbO with content of 45.06%, 10.01%, 10.29%, 6.29%, 17.74%, 9.12% and 1.47%, respectively. In other words, the main phases of flash converting slag and conventional converter converting slag were different. Certain amount of Al2O3 was added to flash smelting slag sample and flash converting slag sample. The analytical results of Al2O3 content in sample by Rietveld full spectrum fitting method were in good agreement with the actual values. Therefore, the quantitative analysis results of phases above were accurate. It could provide basic data for the recycling and use of flash smelting slag and flash converting slag.
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