Haoyu Li, Aiyuan Ma
In this work, a chlorination roasting method for the extraction of precious metals (gold and silver) from the cyanide tailings (CT) was investigated. The decomposition mechanism of the CaCl2 used as a chloride agent was presented during the chlorination roasting. The Au and Ag recovery as high as 91.6% and 54.7% under the optimum experimental conditions could be achieved. The optimal process conditions were obtained through detailed experiments. The structures of CT before and after roasting were examined by using scanning electron microscopy (SEM), and the volatilization process of the chloride of Au and Ag was assessed. The main phases in the CT in an air atmosphere were analyzed using thermogravimetric analysis (TGA), and the phase transformation of the main phases during roasting was analyzed by using X-ray diffraction (XRD). The chlorination roasting process shows advantages for treating the secondary sources of CT, additionally being environmentally benign.
@article{96bdfb8f-7fef-4c75-861a-4634936fbec7,
title={Investigation on the recovery of gold an},
author={Haoyu Li and Aiyuan Ma},
year={2026},
language={en}
}TY - JOUR TI - Investigation on the recovery of gold an AU - Haoyu Li AU - Aiyuan Ma PY - 2026 LA - en ER -
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