Research on sensitizing agent formulation for emulsion explosives using in open-cast
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https://doi.org/10.54939/1859-1043.j.mst.96.2024.99-106Keywords:
Emulsion explosives; Chemical sensitizers; Sodium perchlorate.Abstract
Emulsion explosives are low-sensitivity explosive materials that are often sensitized with gas-forming agents or glass microspheres to increase their reliable detonation ability. However, the above sensitization methods still have many limitations, such as low stability and high cost. In this study, emulsion explosives were sensitized with a new sensitive additive component, including NH4NO3, NaClO4, H2O, solution of NaNO2 15%, and solution of H3PO4 10%. The research results showed that adding about 30 ÷ 35% NH4NO3, 9 ÷ 10% NaClO4, and reducing up to 40% NaNO2 compared to emulsion explosives using only sensitive additive components including solution of NaNO2 15% and solution of H3PO4 10% not only ensured the technical requirements but also helped to limit the decrease in sensitivity and energy characteristics of emulsion explosives over time of storage.
References
[1]. E. G Mahadevan, “Emulsion Explosives. In: Ammonium nitrate explosives for civil applications: slurries, emulsions and ammonium nitrate fuel oils", Wiley, Weinheim, ISBN 978-3-527-33028-7, (2013). DOI: https://doi.org/10.1002/9783527645688
[2]. Bartlomiej Kramarczyk, et al, "Emulsion Explosives: A tutorial review and highlight of recent progress", Vol. 15, No. 14, pp. 4952, (2022). DOI: https://doi.org/10.3390/ma15144952
[3]. Katende Jonathan Kabamba, "Development of two-component gassing system to sensitize explosive emulsions", MEng. disertation, Cape Peninsula University of Technology, (2019).
[4]. Bartlomiej Kramarczyk, et al, "Novel sensitizing agent formulation for bulk emulsion explosives with improved energetic parameters". Materials 2022, Vol. 15, No.3, pp. 900, (2022). DOI: https://doi.org/10.3390/ma15030900
[5]. Charles G Wade, "Cap sensitive emulsions containing perchlorates and occluded air and method", United States patent and trademark Office, Patent No. 4149916, (1979).
[6]. QCVN 04:2020, "Quy chuẩn kỹ thuật quốc gia về thuốc nổ nhũ tương dùng cho lộ thiên", Bộ Công thương, (2020).
[7]. TCVN 6425:1998, “Tiêu chuẩn quốc gia về Vật liệu nổ công nghiệp – Khoảng cách truyền nổ”, Bộ Khoa học và Công nghệ.
[8]. TCVN 6421:1998, “Tiêu chuẩn quốc gia về Vật liệu nổ công nghiệp – Xác định khả năng sinh công bằng cách đo sức nén trụ chì”, Bộ Khoa học và Công nghệ.
[9]. Bartlomiej Kramarczyk, et al, "Study of the influence of sensitizer content on the density of a bulk emulsion explosive used in underground operations ", Central European journal of energetic materials, Vol. 18, No.4, (2021). DOI: https://doi.org/10.22211/cejem/144498
[10]. Tyler, Taylor, et al, "Emulsion explosive ", World intellectual property organization international bureau, International publication number WO 2008/026124 A2, (2008).
[11]. Ngô Văn Giao, "Lý thuyết, tính chất và công nghệ sản xuất thuốc nổ công nghiệp", Nhà xuất bản Quân đội nhân dân, tr. 22, 61, 135-137, (2007).
