Determination of antimony in antimony ores from the beneficiation process in Yunnan by inductively coupled plasma atomic emission spectrometry
SUN Qiliang1,2,3, YAO Mingxing*1,2,3, ZHANG Hongli1,2,3, GUO Xiaorui1,2,3, NI Wenshan1,2,3
1. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China; 2. China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China; 3. Key Laboratory for Polymetallic Ores' Evaluation and Utilization,MNR,Zhengzhou 450006,China
Abstract:Antimony plays an important role in modern industrial system. The rapid and accurate determination of antimony content in antimony ore has important guiding significance for the mining and beneficiation of antimony ores. Fluorite is the main associated ore of antimony ore in a mine in Yunnan Province. The existing mixed acid system containing hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid cannot completely decompose the samples. The process of alkali fusion treatment is long and a large amount of matrix is introduced, which cannot meet the requirements of accurate and rapid determination. The samples were decomposed with mixed acid of hydrofluoric acid and sulfuric acid followed by heating extraction with tartaric acid and hydrochloric acid mixed solution. The antimony in sample could be completely dissolved in the solution. The content of antimony was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) using Sb 206.833{463} nm as the analytical line. The results showed that the mass concentration of antimony in range of 5.0-80 μg/mL had a good linear relationship to the emission intensity. The linear correlation coefficient of calibration curve was r=0.999 8. The limit of detection of the method was 0.012 μg/mL. The contents of antimony in certified reference materials of antimony ore and actual antimony ores from the beneficiation process were determined according to the experimental method. The relative standard deviations (RSD, n=5) of the measured values were between 0.71% and 5.7%. The found results of certified reference materials were consistent with the certified values. The spiked recoveries of antimony for actual sample from the beneficiation process were between 97% and 102%, which could meet the requirements of the national geological and mineral industry standard DZ/T 0130-2006.
孙启亮, 姚明星, 张宏丽, 郭晓瑞, 倪文山. 电感耦合等离子体原子发射光谱法测定云南某矿山锑矿选矿流程样品中锑[J]. 冶金分析, 2022, 42(11): 55-61.
SUN Qiliang, YAO Mingxing, ZHANG Hongli, GUO Xiaorui, NI Wenshan. Determination of antimony in antimony ores from the beneficiation process in Yunnan by inductively coupled plasma atomic emission spectrometry. , 2022, 42(11): 55-61.
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