Research on Removal Impurities from Vein Quartz Sand with Complexing Agents

Abstract:

The impurities removed from the vein quartz sands were investigated with six complexing agents (citric, oxalic, acetic, humic acid, EDTA and thiourea). So as to optimized the leaching reaction parameters and to reach a high rate of impurities removal, the kinds and concentration of complexing agents, reaction temperature and time were also discussed. The results shown that the impurities can be dissolved very effectively by both oxalic acid and acetic acid, and then, the citric, humic acid, EDTA and thiourea can also be increased partly rate of impurities removal. At the same time, the interior impurities of the vein quartz sands has been dissolved out that primary depended on the mixed acids which were 2.0M HCl, 0.5M HF, and 0.8M oxalic acid complexing agent at 80°Cfor 8h. The removal rate of elements Fe, Al, K, Na, Ca, and Mg were respectively 93.31, 47.06, 17.28, 28.82, 12.58 and 62.44 percent.

• Periodical: Applied Mechanics and Materials (Volume 454)
• Pages: 194-199
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.454.194
• Online since: October 2013
• Authors: Le Le Zhong, Shao Min Lei, En Wen Wang, Zhen Yu Pei, Liang Li, Ya Yun Yang
• Keywords: Chelating Agent, Impurity Element, Rate of Removal, Vein Quartz Sand

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