The Solubility of Iron Ore Tailing in Alkaline Environment
ZHANG Pengyi1,2,3, FENG Xiaoxin1,2,3,*, LIU Gang1,2,3, AN Yukun1,2,3
1 College of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China 2 Hebei Province Key Laboratory of Inorganic Nonmetallic Materials, Tangshan 063210, Hebei, China 3 Hebei Technology Innovation Center for Comprehensive Utilization of Industrial Solid Waste, Tangshan 063210, Hebei, China
Abstract: The iron tailing was ground into powder by ball mill and soaked in NaOH and KOH solutions with different concentrations and temperatures. After soaking for 24 h, the solid-liquid separation was carried out. The chemical composition of the liquid phase and the mineral composition of the solid phase were analyzed by ICP-OES and XRD respectively. The results show that the main components dissolved in NaOH and KOH solutions are Si and Al in iron tailings, while the dissolution amounts of Ca, Fe and Mg are very low, and the order of dissolution amounts is Si＞Al＞＞ (Ca, Mg, Fe); the dissolution of Si and Al increases with increasing concentration and temperature. When the solution concentration reached 10 mol/L or the temperature reached 80 ℃, the dissolution increased significantly. Most minerals in iron tailing will be dissolved or transformed in alkali solutions. Quartz, albite and augite are largely dissolved; calcite is transformed into portlandite in high alkali concentration solution; hematite and clinochlore are relatively stable. However, hematite is partially dissolved at high temperature.
1 Shu M, Liu K, Li D J, et al. China Standardization, 2021(11), 154 (in Chinese). 舒敏, 刘昆, 李德军, 等. 中国标准化, 2021(11), 154. 2 Davidovits J. In:1st European Conference on Soft Mineralurgy, Compiegne. France, 1988, pp. 25. 3 Van Jaarsveld J G S, Van Deventer J S J, Lorenzen L. Metallurgical and Materials Transactions B, 1998, 29B, 283. 4 Xu H, Van Deventer J S J. International Journal of Mineral Processing, 2000, 59, 247. 5 Van Deventer J S J, Provis J L, Duxson P, et al. Journal of Hazardous Materials, 2007, A139, 506. 6 Brantley S L, Conrad C F. Kinetics of water-rock Interaction, Springer, New York, 2008, pp. 151. 7 Zhang M, El-korchi T, Zhang G, et al. Fuel, 2014, 134, 315. 8 Zhang Z, Provis J L, Reid A, et al. Construction and Building Materials, 2014, 56, 113. 9 Duxson P, Provis J L, Lukey G C, et al. Langmuir, 2005, 21(7), 3028. 10 Rahier H, Simons W, Van M B, et al. Journal of Materials Science, 1997, 32(9), 2237. 11 Bagheri M, Lothenbach B, Shakoorioskooie M, et al. Cement and Concrete Composites, 2021, 124, 104260. 12 Emmanuel E, Paris M, Deneele D. Applied Clay Science, 2019, 181, 105210. 13 Aldabsheh I, Khoury H, Wastiels J, et al. Applied Clay Science, 2015, 115, 238. 14 Wang Y L, Luo S H, Jiang M F, et al. Multipurpose Utilization of Mineral Resources, 2019(5), 121 (in Chinese). 汪应玲, 罗绍华, 姜茂发, 等. 矿产综合利用, 2019(5), 121. 15 Wang M C, Zhang H L, Chen Y L, et al. China Mining Magazine, 2019, 28(8), 170 (in Chinese). 王梦婵, 张惠灵, 陈永亮, 等. 中国矿业, 2019, 28(8), 170. 16 Chen Y L, Wu S Y, Qi C H, et al. Metal Mine, 2019(4), 199 (in Chinese). 陈永亮, 武诗怡, 齐辰晖, 等. 金属矿山, 2019(4), 199. 17 Liu X, Cui X W. Journal of Shangluo University, 2016, 30(2), 43 (in Chinese). 刘璇, 崔孝炜. 商洛学院学报, 2016, 30(2), 43. 18 Duan P, Yan C, Zhou W, et al. Ceramics International, 2016, 42(12), 13507 19 Liu S X, Nie Y M, Niu F S. Metal Mine, 2010(9), 182 (in Chinese). 刘淑贤, 聂轶苗, 牛福生. 金属矿山, 2010(9), 182. 20 Das P, Beulah M, Hossiney N, et al. Journal of Mining and Metallurgy A, Mining, 2019, 55(1), 27. 21 Defaveri K C S, Santos L F, Carvalho J M F, et al. Construction and Building Materials, 2019, 220, 375. 22 Jiang Y F, Wu L, Liu Y. New Building Materials, 2019(9), 57 (in Chinese). 姜玉凤, 吴璐, 刘宇. 新型建筑材料, 2019(9), 57. 23 Jiang N. Shaanxi Water Resources, 2019(9), 214 (in Chinese). 姜楠. 陕西水利, 2019(9), 214. 24 Peng L. Research on silica a lumina activity stimulation of iron tailings and filling cementitious materials based on iron tailings. Master’s Thesis, Chongqing University, China, 2014 (in Chinese). 彭链. 铁尾矿硅铝活性激发及铁尾矿基充填胶凝材料制备技术研究. 硕士学位论文, 重庆大学, 2014. 25 Prashant K, Nawal M, Yasunori O, et al. Journal of Materials Chemistry, 2001, 11(12), 3285. 26 Perumal P, Piekkari K, Sreenivasan H, et al. Minerals Engineering, 2019, 144, 106026. 27 Zhao J, Brugger J, Pring A. Geoscience Frontiers, 2019, 10(1), 29.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2023, Vol. 37 
