Preparation of nano-structured strontium carbonate from Dasht-e kavir celestite ore via mechanochemical method

Document Type : Research Paper

Authors

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran.

Abstract

Strontium carbonate (SrCO3) is one of the most important strontium compounds that have been used in a variety of technological and industrial applications. In the present investigation, nano-structured strontium carbonate was synthesized by mechano-chemical reaction of celestite ore (SrSO4) collected from Dasht-e kavir, Iran and sodium carbonate during high energy mechanical milling.The milling were performed for different durations of time up to 16 hours in a high-energy planetary ball mill with the rotational speed and ball to powder weight ratio of 300 rpm and 30, respectively. X-Ray diffraction (XRD), X-ray fluorescence spectrometer (XRF) and scanning electron microscope (SEM) were used to characterize the obtained samples. XRD results showed that at a Na2CO3:SrSO4 molar ratio of 1.05:1, mechano-chemical reaction started after 1 hour of milling. Although the longer milling times gives a more conversion of SrSO4 to SrCO3 but it has not been completed even after 16 hours of milling. However, by increasing the molar ratio of Na2CO3:SrSO4 to 1.25:1, the SrCO3 formation was completed after 2 hours. The results also showed that the mean crystallites sizes of produced nano-powder were approximately 32 nm. XRF result indicated that the final product was obtained with a purity of 95 wt.%. SEM studies confirmed the formation of SrCO3 nano-powder with a mean particle size of 80 nm.

Keywords

References

  1. Bingöl D, Aydoğan S, Bozbaş SK. Production of SrCO3 and (NH4)2SO4 by the dry mechanochemical processing of celestite. Journal of Industrial and Engineering Chemistry. 2012;18(2):834-8.
  2. Martińez AL, Uribe AS. Interfacial properties of celestite and strontianite in aqueous solutions. Minerals Engineering. 1995;8(9):1009-22.
  3. Griffiths J. Celestite: New production and processing developments. IND. MINER. Ind. Miner. 1985(218):21.
  4. Chen W, Zhu Y. Preparation of strontium carbonate from celestite. Mineral Processing and Extractive Metallurgy. 2000;109(1):1-5.
  5. Sonawane RS, Apte SK, Kale BB, Dongare MK. Effect of a catalyst on the kinetics of reduction of celestite (SrSO4) by active charcoal. Metallurgical and Materials Transactions B. 2000;31(1):35-41.
  6. Erdemoğlu M, Canbazoğlu M. The leaching of SrS with water and the precipitation of SrCO3 from leach solution by different carbonating agents. Hydrometallurgy. 1998;49(1-2):135-50.
  7. Owusu G, Litz JE. Water leaching of SrS and precipitation of SrCO3 using carbon dioxide as the precipitating agent. Hydrometallurgy. 2000;57(1):23-9.
  8. Beg M, Arshad A, Khan SA, Hasan N. Production of strontium carbonate from celestite. Pakistan J. Sci. Ind. Res. 1986;29:217-21.
  9. Iwai M, Toguri JM. The leaching of celestite in sodium carbonate solution. Hydrometallurgy. 1989;22(1-2):87-100.
  10. Castillejos AHE, de la Cruz del FPB, Uribe AS. The direct conversion of celestite to strontium carbonate in sodium carbonate aqueous media. Hydrometallurgy. 1996;40(1-2):207-22.
  11. Bingol D, Aydogan S, Gultekin SS. Neural model for the leaching of celestite in sodium carbonate solution. Chemical Engineering Journal. 2010;165(2):617-24.
  12. Setoudeh N, Welham NJ, Azami SM. Dry mechanochemical conversion of SrSO4 to SrCO3. Journal of Alloys and Compounds. 2010;492(1-2):389-91.
  13. Erdemoğlu M, Aydoğan S, Canbazoğlu M. A kinetic study on the conversion of celestite (SrSO4) to SrCO3 by mechanochemical processing. Hydrometallurgy. 2007;86(1-2):1-5.
  14. Zhang Q, Saito F. Mechanochemical processing of celestine. Chemical Engineering Journal. 1997;66(1):79-82.
  15. Obut A, Baláž P, Girgin İ. Direct mechanochemical conversion of celestite to SrCO3. Minerals Engineering. 2006;19(11):1185-90.
  16. Venkateswarlu K, Chandra Bose A, Rameshbabu N. X-ray peak broadening studies of nanocrystalline hydroxyapatite by Williamson–Hall analysis. Physica B: Condensed Matter. 2010;405(20):4256-61.
  17. Suryanarayana C. Mechanical alloying and milling. Progress in Materials Science. 2001;46(1-2):1-184.

 

Journal of Ultrafine Grained and Nanostructured Materials
Volume 51, Issue 2
December 2018
Pages 147-152

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History

  • Receive Date: 28 October 2017
  • Revise Date: 26 April 2018
  • Accept Date: 28 April 2018

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