eesti teaduste
akadeemia kirjastus
SINCE 1984
Oil Shale cover
Oil Shale
ISSN 1736-7492 (Electronic)
ISSN 0208-189X (Print)
Impact Factor (2020): 0.934


Full article in PDF format | doi: 10.3176/oil.2012.1.04

Y.-M. XU, D.-M. HE, J.-W. SHI, J. GUAN, Q.-M. ZHANG


In this research, the leaching and preparation of Al2O3 from retorting residue of Fushun east open-pit oil shale in China were investigated. The optimum acid leaching conditions are the following: activation temperature is 850 ºC, activation time is 1h, the particle size of the raw material is 0.074mm, the concentration of acid is 12%, the liquid to solid ratio is 5:1, reaction tem­perature is 100 ºC and reaction period is 1.5 h. The homogeneous chemical precipitation method was applied for the preparation of alumina. Optimum conditions for alumina preparation were determined and are as follows: reaction at 55 ºC for 1.5 h, the concentration of sodium meta aluminate is 0.4 mol/L, the dose of surfactant is 0.3%. The product can be effectively purified by washing with 25% acetic acid, and then characterized by laser particle size distribution, X-ray fluorescence spectrometry (XRF), X-ray dif­fraction (XRD) and scanning electron microscopy (SEM). Results prove that the product is γ- Al2O3 with particle diameters in the range of 0.6–0.9 μm, and its degree of purity is 98.7%.


  1. An, B. C., Wang, W. Y., Ji, G. J., Gan, S. C., Gao, G. M., Xu, J. J., Li, G. G. Preparation of nano-sized α-Al2O3 from oil shale ash // Energy. 2010. Vol. 35, No. 1. P. 45–49.

  2. Chen, Q. Y., Wu, X. W., Bai, Y. G. // China Powder Science and Technology. 2003. No. 8. P. 16–18 [in Chinese].

  3. Liu, Q., Wang, A. Q., Wang, X. H., Gao, P., Wang, X. D., Zhang, T. Synthesis, characterization and catalytic applications of mesoporous γ-alumina from boehmite sol // Micropor. Mesopor. Mat. 2008. Vol. 111, No. 1–3. P. 323–333.

  4. Xu, Y. M., He, D. M., Wang, D. M., Lian, Y. H., Guan, J., Zhang, Q. M. In­fluence of calcination temperature on leaching rate of aluminium and iron impurities in oil shale ash // Oil Shale. 2009. Vol. 26, No. 2. P. 163–168.

  5. Feng, Z. Y., Li, Y., Xue, X. X. Preparation of alumina and silica white from oil shale residue // Mining and Metall Urgical Engineering. 2008. Vol. 28, No. 4. P. 53–57 [in Chinese].

  6. Arro, H, Prikk, A, Pihu, T., Öpik, I. Utilization of semi-coke of Estonian shale oil industry // Oil Shale. 2002. Vol. 19, No. 2. P. 117–125.

  7. Li, Y., Xue, X. X., Feng, Z. Y. Preparation of precipitated silica from oil shale residue // Journal of Process Engineering. 2007. Vol. 7, No. 4. P. 751–754 [in Chinese].

  8. Jiang, X. M., Han, X. X., Cui, Z. G. Progress and recent utilization trends in combustion of Chinese oil shale // Prog. Energ. Combust. 2007. Vol. 33, No. 6. P. 552–579.

  9. Trikkel, A, Kuusik, R., Martins, A., Pihu, T., Stencel, J. M. Utilization of Estonian oil shale semicoke // Fuel Process. Technol. 2008. Vol. 89, No. 8. P. 756–763.

10. Xu, Y. M., He, D. M., Jiang, H.M., Lian, Y. H., Zhang, W., Guan, J., Zhang, Q. M. Characterization of oil shale processing residues and separated products // Oil Shale. 2009. Vol. 26, No. 4. P. 500–512.

11. Gao, G. M., Zou, H. F., Gan, S. C., Liu, Z. J., An, B. C., Xu, J. J., Li, G. H. Pre­paration and properties of silica nanoparticles from oil shale ash // Powder Technol. 2009. Vol. 191. P. 47–51.

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