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Obtaining porous ammonium nitrate in multistage and multifunctional vortex granulators

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Parent Category: Contents №6 2017

Category: Geotechnical and mining mechanical engineering, machine building

Created on 11 January 2018

Last Updated on 11 January 2018

Published on 11 January 2018

Written by Super User

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Authors:

А.E. Аrtyukhov, Candidate of Technical Science, Sumy State University, Associate Professor of the Processes and Equipment of Chemical and Petroleum-Refineries Department, Sumy, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

A.V. Ivaniia, Sumy State University, Postgraduate Student of the Processes and Equipment of Chemical and Petroleum-Refineries Department, Sumy, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.">andrey.ivaniy@gmail.com

Abstract:

Purpose. Substantiation of opportunities to improve the quality of porous ammonium nitrate (as a component of industrial explosives for the mining industry) through the use of multisection and multifunctional granulators with vortex fluidized bed.

Methodology. The data presented in the work were obtained on the basis of series of experimental studies on experimental-industrial samples of vortex granulators with various designs. According to the results of experiments samples of porous ammonium nitrate were obtained and comparative description of the main indicators of quality including surface structure; strength; fractional composition; retention capacity, is presented.

Findings. It is shown that by the application of multistage and multifunctional devices it is possible to obtain a porous ammonium nitrate with developed surface area and sufficient strength. Here, heat transfer agent recycling is also provided in the volume of device as well as using its different thermal capacity at various stages of granules porous structure producing. Evaluation of fractional composition of commodity granules also allows stating the advantages of presented designs of devices.

Originality. For the first time results, confirming the possibility of combining several stages of process of producing porous ammonium nitrate, were obtained. Using scanning electron microscopy, the main features of the porous structure of the granules were shown and recommendations concerning the control of porous surface formation process were given.

Practical value. The presented results of experimental studies are the base for development of multi-stage and multifunctional engineering calculation technique for vortex granulators. Based on these results improved designs of vortex granulators, protected by IP documents were developed. Such designs of vortex granulators can be used directly at the place of mining minerals of ore and non-metallic origin.

References

1. Erode, G. M., 2003. Ammonium Nitrate Explosives for Civil Applications: Slurries, Emulsions and Ammonium Nitrate Fuel Oils. Weinheim: Wiley-VCH Verlag & Co.

2. Buczkowski, D. and Zygmunt, B., 2011. Detonation Properties of Mixtures of Ammonium Nitrate Based Fertilizers and Fuels. Central European Journal of Energetic Materials, 8(2), pp. 99‒106.

3. Xu Chang, Xu Chang – No. CN20161783865, 2017. Porous and granular ANFO (ammonium nitrate fuel oil) and preparation method thereof. China. Pat. 106316727 (A) CN, Int. Cl C06B31/28.

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5. Weber, P. W., Millage, K. K., Crepeau, J. E., Happ, H. J., Gitterman, Y. and Needham, C. E., 2015. Numerical simulation of a 100-ton ANFO detonation. Shock Waves, 25(2), pp. 127–140.

6. Leontiev, A. I., Kuzma-Kichta, Yu. A. and Popov, I. A., 2017. Heat and mass transfer and hydrodynamics in swirling flows (review). Thermal Engineering, 64(2), рр. 111‒126.

7. Saikh, M. A., 2013. A technical note on granulation technology: a way to optimize granules. International Journal of Pharmaceutical Sciences Review and Research, 4, рр. 55–67.

8. Sen, P. K., Malmedal, K. and Malinowski, J., 2015. Energy efficient design: Tools, techniques and applications to the petroleum and chemical industry. In: Petroleum and Chemical Industry Technical Conference (PCIC).

9. Artiukhov, A. E. and Sklabinskyi, V. I., 2015. Hydrodynamics of gas flow in small-sized vortex granulators in the production of nitrogen fertilizers. Chemistry & chemical technology, 9(3), pp. 337‒342.

10. Artiukhov, A. E., Fursa, A. S. and Moskalenko, K. V., 2015. Classification and separation of granules in vortex granulators. Chemical and Petroleum Engineering, 51(5‒6), pp. 311‒318.

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