Leaching of aluminum from coal spoil by mechanothermal activation

doi:10.1007/s11705-015-1518-2

Frontiers of Chemical Science and Engineering

2015, Vol. 9

Issue (2): 216-223 https://doi.org/10.1007/s11705-015-1518-2

本期目录

Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN(

),Jianguo YU(

)

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

全文: PDF(931 KB) HTML

Abstract：

The process of activating coal spoil (CS) in order to recover aluminum as a high value product was investigated. The CS was first characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD) and thermogravimetric analysis-differential scanning calorimetry (TGA-DSC) in order to determine the chemical and mineral compositions of the CS. Then a mechanothermal activation method was adopted to increase the aluminum activity in the coal spoil. Over 95% of the aluminum in the CS could be extracted using this activation method. The mechanothermal activation process promoted the destruction of kaolinite structures and hindered the formation of amorphous γ-Al₂O₃. This resulted in a high aluminum leaching activity in the mechanothermally activated CS.

Key words： coal spoil mechanothermal compound activation leaching

收稿日期: 2015-03-11 出版日期: 2015-07-14

Corresponding Author(s): Yuzhu SUN,Jianguo YU

引用本文:

. [J]. Frontiers of Chemical Science and Engineering, 2015, 9(2): 216-223.
Xiaoxue SUN,Yuzhu SUN,Jianguo YU. Leaching of aluminum from coal spoil by mechanothermal activation. Front. Chem. Sci. Eng., 2015, 9(2): 216-223.

链接本文:

https://academic.hep.com.cn/fcse/CN/10.1007/s11705-015-1518-2
https://academic.hep.com.cn/fcse/CN/Y2015/V9/I2/216

Tab.1

Fig.1

Tab.2

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Fig.14

1	Liu H B, Liu Z L. Recycling utilization patterns of coal mining waste in China. Resources, Conservation and Recycling, 2010, 54(12): 1331-1340 https://doi.org/10.1016/j.resconrec.2010.05.005
2	Livingston W R, Rogers D A, Chapman R J, Bailey N T. The use of coal spoils as feed materials for alumina recovery by acid-leaching routes. 1. The suitability and variability of the feed materials. Hydrometallurgy, 1983, 10(1): 79-96 https://doi.org/10.1016/0304-386X(83)90079-8
3	Livingston W R, Rogers D A, Chapman R J, Gregory A G, Bailey N T. The use of coal spoils as feed materials for alumina recovery by acid-leaching routes. 2. The effect of the calcination conditions on the leaching properties of the colliery spoil. Hydrometallurgy, 1983, 10(1): 97-109 https://doi.org/10.1016/0304-386X(83)90080-4
4	Livingston W R, Rogers D A, Chapman R J, Bailey N T. The use of coal spoils as feed materials for alumina recovery by acid-leaching routes. 3. The effect of the leaching conditions on the extraction of aluminium and iron from a fluidised bed ash. Hydrometallurgy, 1985, 13(3): 283-291 https://doi.org/10.1016/0304-386X(85)90017-9
5	Mahi P, Bailey N T. The use of coal spoils as feed materials for alumina recovery by acid-leaching routes. 4. The extraction of iron from aluminiferous solutions with amines, in particular Alamine 336. Hydrometallurgy, 1985, 13(3): 293-304 https://doi.org/10.1016/0304-386X(85)90018-0
6	Bailey N T, Chapman R J. The use of coal spoils as feed materials for alumina recovery by acid-leaching routes. 5. The effect of fluoride additions on the extraction of aluminum with hydrochloric acid. Hydrometallurgy, 1987, 18(3): 337-350 https://doi.org/10.1016/0304-386X(87)90074-0
7	Mahi P, Livingston W R, Rogers D A, Chapman R J, Bailey N T. The use of coal spoils as feed materials for alumina recovery by acid-leaching routes. Part 6: The purification and crystallization of chloride and chloride/fluoride leach liquors by HCl gas precipition. Hydrometallurgy, 1991, 26(1): 75-91 https://doi.org/10.1016/0304-386X(91)90023-F
8	Sun X X, Sun Y Z, Yu J G. Cooling crystallization of aluminum sulfate in pure water. Journal of Crystal Growth, 2015, 419: 94-101 https://doi.org/10.1016/j.jcrysgro.2015.03.005
9	Sun X X, Sun Y Z, Yu J G. Crystal structure of aluminum sulfate hexadecahydrate and its morphology. Crystal Research and Technology, 2015, 50(4): 293-298 https://doi.org/10.1002/crat.201400428
10	Aglietti E F, Porto-Lopez J M, Pereira E. Mechanochemical effects in kaolinite grinding. I. Textural and physicochemical aspects. International Journal of Mineral Processing, 1986, 16(1-2): 125-133 https://doi.org/10.1016/0301-7516(86)90079-7
11	Aglietti E F, Porto-Lopez J M, Pereira E. Mechanochemical effects in kaolinite grinding. II. Structural aspects. International Journal of Mineral Processing, 1986, 16(1-2): 135-146 https://doi.org/10.1016/0301-7516(86)90080-3
12	Qiao X C, Si P, Yu J G. A Systematic investigation into the extraction of aluminum from coal spoil through kaolinite. Environmental Science & Technology, 2008, 42(22): 8541-8546 https://doi.org/10.1021/es801798u
13	Cheng F, Cui L, Miller J D, Wang X. Aluminum leaching from calcined coal waste using hydrochloric acid solution. Mineral Processing and Extractive Metallurgy Review, 2012, 33(6): 391-403 https://doi.org/10.1080/08827508.2011.601700
14	Guo Y X, Li Y Y, Cheng F Q, Wang M, Wang X M. Role of additives in improved thermal activation of coal fly ash for alumina extraction. Fuel Processing Technology, 2013, 110: 114-121 https://doi.org/10.1016/j.fuproc.2012.12.003
15	Li C, Wan J H, Sun H H, Li L T. Investigation on the activation of coal gangue by a new compound method. Journal of Hazardous Materials, 2010, 179(1-3): 515-520 https://doi.org/10.1016/j.jhazmat.2010.03.033
16	Shen X. Differential Thermal and Thermogravimetric Analysis and Non-isothermal Kinetics of Solid. China: Metallurgical Industry Press, 1995, 22-96 (in Chinese)
17	Mullin J W. Crystallization. 3rd ed. UK: Butterworth-Heinemann, 2000, 78-80
18	Qiu X H, Zhang Q J. Mechanochemical changes of kaolinite during dry grinding. Journal of the Chinese Ceramic Society, 1991, 19(5): 448-455
19	Young R A, Hewat A W. Verification of the triclinic crystal structure of kaolinite. Clays and Clay Minerals, 1988, 36(3): 225-232 https://doi.org/10.1346/CCMN.1988.0360303
20	Wong S F. Fourier Translation Infrared Spectroscopy. Beijing: Chemical Industry Press, 2010, 328-331 (in Chinese)
21	Percival H J, Duncan J F, Foster P K. Interpretation of the kaolinite-mullite reaction sequence from infrared absorption spectra. Journal of the American Ceramic Society, 1974, 57(2): 57-61 https://doi.org/10.1111/j.1151-2916.1974.tb10813.x
22	Frost R L, Vassallo A M. The dihydroxylation of the kaolinite clay minerals using infrared emission spectroscopy. Clays and Clay Minerals, 1996, 44(5): 635-651 https://doi.org/10.1346/CCMN.1996.0440506
23	Mukherjee S, Srivastava S K. Minerals transformations in northeastern region coals of India on heat treatment. Energy & Fuels, 2006, 20(3): 1089-1096 https://doi.org/10.1021/ef050155y
24	Si P. Activation technology for aluminum recovery from coal spoil through acid leaching route. Dissertation for the Doctoral Degree. Shanghai: East China University of Science and Technology, 2011, 68-70

Viewed

Full text

Abstract

Cited

Shared

Discussed