Abstract
The volatilization of stibnite (Sb2S3) in nitrogen from 700 to 1000 °C was investigated by using thermogravimetric analysis. The results indicate that in inert atmosphere, stibnite can be volatilized most efficiently as Sb2S3 (g) at a linear rate below 850 °C, with activation energy of 137.18 kJ/mol, and the reaction rate constant can be expressed as k=206901exp(−16.5/T). Stibnite can be decomposed into Sb and sulfur at temperature above 850 °C in a nitrogen atmosphere. However, in the presence of oxygen, stibnite is oxidized into Sb and SO2 gas at high temperature. Otherwise, Sb is oxidized quickly into antimony oxides such as Sb2O3 and SbO2, while Sb2O3 can be volatilized efficiently at high temperature.
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References
AWE S A, SANDSTROM Å. Electrowinning of antimony from model sulphide alkaline solutions [J]. Hydrometallurgy, 2013, 137(5): 60–67.
MAHLANGU T, GUDYANGA F P, SIMBI D J. Reductive leaching of stibnite (Sb2S3) flotation concentrate using metallic iron in a hydrochloric acid medium I: Thermodynamics [J]. Hydrometallurgy, 2006, 84(2): 192–203.
ANDERSON C G. The metallurgy of antimony [J]. Chemie der Erde-Geochemistry, 2012, 72(4): 3–8.
MINZ F, BOLIN N, LAMBERG P, WANHAINEN C. Detailed characterisation of antimony mineralogy in a geometallurgical context at the Rockliden ore deposit North-Central Sweden [J]. Miner Engineering, 2013, 32(7): 148–152.
AWE S A, SUNDKVIST J, BOLIN N, SANDSTROM Å. Process flowsheet development for recovering antimony from Sb-bearing copper concentrates [J]. Miner Engineering, 2013, 49(2): 45–53.
YANG Jian-guang, TANG Chao-bo, CHEN Yong-ming, TANG Mo-tang. Separation of antimony from a stibnite concentrate through a low-temperature smelting process to eliminate SO2 emission [J]. Metallurgical and Materials Transactions B, 2011, 42(2): 30–36.
LAGER T, FORSSBERG K S E. Current processing technology for antimony-bearing ores: A review, part 2 [J]. Miner Engineering, 1989, 2: 543–556.
CHEN Yong-ming, HUANG Chao, TANG Mo-tang, YAO Wei-yi, TANG Chao-bo, PI Guan-hua. Production of antimony by directly reducing-matting smelting of stibnite concentrate [J]. The Chinese Journal of Nonferrous Metals, 2005, 15(7): 1311–1316. (in Chinese)
TANG Mo-tang, JIN Gui-zhong. Industrial experiment on the volatilization-matte making smelting of antimony concentrate bearing high copper in blast furnace [J]. The Chinese Journal of Nonferrous Metals, 2007, 48(3): 34–36. (in Chinese)
BALAZ P, ACHIMOVICOVA M, FICERIOVA J, KAMMEL R, ŠEPELAK V. Leaching of antimony and mercury from mechanically activated tetrahedrite Cu12Sb4S13 [J]. Hydrometallurgy, 1998, 47(3): 297–307.
UBALDINI S, VEGLIO F, FOMARI P, ABBRUZZESE C. Process flow-sheet for gold and antimony recovery from stibnite [J]. Hydrometallurgy, 2000, 57(13): 187–199.
RIVEROS P A. The removal of antimony from copper electrolytes using amino-phosphonic resins: Improving the elution of pentavalent antimony [J]. Hydrometallurgy, 2010, 105(5): 110–114.
CELEP O, ALP I, DEVECI H. Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach [J]. Hydrometallurgy, 2011, 105(3): 234–239.
YANG Jin-guang, YANG Sheng-hai, TANG Chao-bo. The membrane electrowinning separation of antimony from a stibnite concentrate [J]. Metallurgical and Materials Transactions B, 2010, 41(7): 527–534.
ZIVKOVIC Z, STRBAC N, ZIVKOVIC D, GRUJICIC D, BOYANOV B. Kinetics and mechanism of Sb2S3 oxidation process [J]. Thermochim Acta, 2002, 383(1): 137–143.
HUA Yi-xin, YANG Yong, ZHU Fu-liang. Volatilization kinetics of Sb2S3 in steam atmosphere [J]. Journal of Materials Sciences and Technology, 2003, 6(3): 619–622.
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Foundation item: Project(51204210) supported by the National Natural Science Foundation of China; Project(2011AA061001) supported by the National High Technology Research and Development Program of China; Project(2012BAC12B04) supported by the National Science & Technology Pillar Program during Twelfth Five-Year Plan of China
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Qin, Wq., Luo, Hl., Liu, W. et al. Mechanism of stibnite volatilization at high temperature. J. Cent. South Univ. 22, 868–873 (2015). https://doi.org/10.1007/s11771-015-2595-6
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DOI: https://doi.org/10.1007/s11771-015-2595-6