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Wyszukujesz frazę "emulsion explosives" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Study of the Influence of Sensitizer Content on the Density of a Bulk Emulsion Explosive Used in Underground Operations
Autorzy:
Kramarczyk, Bartłomiej
Mertuszka, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/27787941.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
blasting
emulsion explosives
density measurements
chemical sensitization
Opis:
Emulsion matrix sensitization is typically performed by chemical reduction of the density using different sensitization agents. Mixing of the components takes place directly inside the loading hose, which is equipped with static mixing devices. Precise dosing of the components, due to the multi-ingredient nature of the mixture, has a significant impact on the detonation and operational parameters of the end product. However, the operation and maintenance of the mixing-charging units in underground mines is very difficult due to the local conditions. As a consequence, different values for the detonation parameters may be expected when charging the same explosive into blastholes using two different charging units. The present article presents the results of laboratory testing of the influence of the sensitizing agent content on the density of a bulk emulsion explosive. Analysis confirmed that increasing the concentration of the sensitizing agent by 30% and 50% led to density reductions by 4% and 7%, respectively. In turn, reducing the sensitizer content by the same percentages resulted in an increase in the final density by 7% and 8%, respectively.
Źródło:
Central European Journal of Energetic Materials; 2021, 18, 4; 429--447
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Time on the Density and Detonation Velocity of Bulk Emulsion Explosives – a Case Study from Polish Copper Mines
Autorzy:
Mertuszka, Piotr
Fuławka, Krzysztof
Pytlik, Mateusz
Wincenciak, Jarosław
Wawryszewicz, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/358802.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
blasting
emulsion explosives
VOD
density measurements
chemical gassing
Opis:
The basic method for emulsion matrix sensitisation is chemical reduction of the density by producing in situ gas bubbles. The mixing of the components takes place directly inside the loading hose, which is equipped with a mixing device. Due to the multi-component nature of the mixture, the precise dosing of individual components has a key influence on the detonation behaviour of the final product. Unfortunately, keeping the mixing and charging of UG mobile units in good working condition in underground mines is a considerable challenge. As a result, completely different detonation parameters may be observed when charging the same explosive into blast holes using two different units. The aim of the present study was to determine the behaviour of the mechanically loaded emulsion explosives used in Polish underground copper mines by tracking the changes in the density and detonation velocity over time. Samples of the explosives were collected from selected mobile units. In addition, the influence of the quantity of the sensitising agent on the changes in the emulsion density and VOD was studied.
Źródło:
Central European Journal of Energetic Materials; 2019, 16, 2; 245-258
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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