Abstract
The charge distribution of ions in sillimanite crystal, diatomic energy, and the heat of absorption of sillimanite on collectors such as sodium oleate, sodium dodecyl sulfonate, and tetradecyl amine are evaluated in the light of quantum chemistry CNDO/2 method. According to the calculating results, the bonding mechanism between mineral and collectors is analyzed. It is demonstrated that sodium oleate is adsorbed on sillmanite surface chemically; however, in the case of sodium dodecyl sulfonate, it is of physic-adsorption. At the same time a good prediction was made on the collective power of collectors as in the following order:sodium oleate>tetradecyl amine>sodium dodecyl sulfonate. This order has been confirmed by the testing results of flotation.
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References
Xia Shaozhu, Feng Qigui, Hou Ruozhou,et al. Mineral resources of andalusite, sillimanite and cyanite and benefication. Metal Mines (in Chinese), 1994, (3): 36–41
Zheng Youlong, Guan Yongshi, Zhao Ping,et al. Investigation on benefication technology of an ore of sillimanite. Comprehensive Utilization of Mineral Resources, (in Chinese), 1992, (3): 1–5
Li Wensheng. Investigation on benefication of ore at sandaogou sillimanite mine. Non-Metallic Mines (in Chinese), 1988, (1): 21–25
Deer W A, Howie R A, Zussman J. Rock-forming minerals. Vol 1A, 2nd ed. London and New York: Longman House, 1982. 719–726
Pople J A, Beveridge D L. Approximate molecular orbital theory. London: Mc Graw-Hill, 1970. 214
Weast R C. CRC handbook of chemistry and physics. 70th ed. Baca Roton: CRC Press Inc, 1990. F188–189
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Synopsis of the first author Dong Hongjun, associate professor, born in Sept., 1964, received Ph D degree in 1993. He is specialized in flotation fundamentals and application, industrial minerals processing, interested in refining inorganic nonmetallic materials.
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Dong, H., Chen, J. Study on bonding mechanism between sillimanite and collectors by quantum chemistry calculation. J. Cent. South Univ. Technol. 2, 66–70 (1995). https://doi.org/10.1007/BF02652010
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DOI: https://doi.org/10.1007/BF02652010