Temat: mining explosives - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Utleniacz – podstawowy składnik górniczych materiałów wybuchowych
Oxidizer – the basic ingredient of mining explosives
Autorzy:: Maranda, A.
Sitkiewicz-Wołodko, R.
Zrobok, R.
Florczak, B.
Bogusz, R.
Powiązania:: https://bibliotekanauki.pl/articles/165714.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:: utleniacze
górnicze materiały wybuchowe
oxidizers
mining explosives
Opis:: W artykule przedstawiono właściwości utleniaczy nieorganicznych (azotany(V), chlorany(V), chlorany (VII) i nadtlenek wodoru) stosowanych lub mogących znaleźć zastosowanie w górniczych środkach strzałowych. Zestawiono ich masy cząsteczkowe, gęstości, bilanse tlenowe, reakcje rozkładu, temperatury topnienia i rozkładu oraz rozpuszczalności w wodzie. Wyeksponowano ich wady i zalety, decydujące o zakresie wykorzystania w poszczególnych typach mieszanin wybuchowych.
This paper presents the characteristics of inorganic oxidizers (nitrate(V), chlorate(V), chlorate(VII) hydrogen dioxide) used or likely to be used in the mining blasting agents. Their molecular weights, densities, balances oxygen, decomposition reactions, temperatures of melting and decomposition and solubilities in water have been summarized. Their advantages and disadvantages, deciding on the use of particular types of explosive compositions have been exposed.
Źródło:: Przegląd Górniczy; 2017, 73, 3; 30-35
0033-216X
Pojawia się w:: Przegląd Górniczy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Detonation Characteristics of a NOx-Free Mining Explosive Based on Sensitised Mixtures of Low Concentration Hydrogen Peroxide and Fuel
Autorzy:: Araos, M.
Onederra, I.
Powiązania:: https://bibliotekanauki.pl/articles/358423.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: hydrogen peroxide
NOx free mining explosives
detonation
hot spots
Opis:: Mining explosives based on ammonium nitrate(V) are safe and effective, however, the risk of NOx fume production during blasting is still present. In 2013, a project to eliminate NOx fumes from blasting began and hydrogen peroxide was chosen to replace ammonium nitrate(V) as the oxidiser. Previous work in this area demonstrated that hydrogen peroxide/fuel-based mixtures were able to detonate, provided that they are initiated under a situation of high confinement and also using hydrogen peroxide at relatively high concentrations. In contrast, a comprehensive study was conducted to determine the detonation properties of hydrogen peroxide/fuel-based mixtures that used hydrogen peroxide at lower concentrations (below 50 wt.%), detonated in unconfined conditions and used void sensitisation to achieve an efficient detonation reaction. This article presents the results of the influence of the density, water content, critical diameter and type of void sensitisation on the velocity of detonation (VOD) of hydrogen peroxide/ fuel-based explosive mixtures. The results indicate that the mixtures can achieve a different VOD which depends on the size of the sensitising voids and more importantly, the mixtures behave as non-ideal explosive, similarly to ammonium nitrate-based explosives, but with the advantage of being a NOx-free explosive.
Źródło:: Central European Journal of Energetic Materials; 2017, 14, 4; 759-774
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Testing of mining explosives with regard to the content of carbon oxides and nitrogen oxides in their detonation products
Autorzy:: Zawadzka-Małota, I.
Powiązania:: https://bibliotekanauki.pl/articles/92162.pdf
Data publikacji:: 2015
Wydawca:: Główny Instytut Górnictwa
Tematy:: mining explosives
blasting gases
safety
górnicze materiały wybuchowe
gazy postrzałowe
bezpieczeństwo
Opis:: Blasting operations are a risk to the lives of mining workers. Blasting gases are particularly dangerous factors – these are the products from detonations which come from applying explosives which contain toxic nitrogen oxides and carbon monoxide. The aim of this study was the experimental determination of the composition of the blasting gases from a variety of explosives currently being produced in Poland. On the basis of research results, analysis was carried out. To perform research of the composition of blasting gases, after the detonation of explosives, a laboratory test stand was used. The study involved the determination of gaseous products, i.e. nitrogen oxides and carbon oxides. Research was carried out in accordance with research methodology based on European Directive 93/15/EEC and the harmonized standard PN-EN 13631-16. These studies provided information on the amount of harmful gaseous products from mining explosives after detonation.
Źródło:: Journal of Sustainable Mining; 2015, 14, 4; 173-178
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Research of explosives in an environment of high pressure and temperature using a new test stand
Autorzy:: Drzewiecki, J.
Myszkowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/92079.pdf
Data publikacji:: 2015
Wydawca:: Główny Instytut Górnictwa
Tematy:: mining
tests of explosives
natural hazards prevention
górnictwo
badania materiałów wybuchowych
zapobieganie zagrożeniom naturalnym
Opis:: In this article the test stand for determining the blast abilities of explosives in high pressure and temperature conditions as well as the initial results of the research are presented. Explosives are used in rock burst and methane prevention to destroy precisely defined fragments of the rock mass where energy and methane are accumulated. Using this preventive method for fracturing the structure of the rocks which accumulate the energy or coal of the methane seam very often does not bring the anticipated results. It is because of the short range of destructive action of the post-blast gases around the blast hole. Evaluation of the blast dynamics of explosives in a test chamber, i.e. in the pressure and temperature conditions comparable to those found “in situ”, will enable evaluation of their real usefulness in commonly used mining hazard preventive methods. At the same time, it will enable the development of new designs of the explosive charges used for precisely determined mining hazards. In order to test the explosives for their use in difficult environmental conditions and to determine the characteristics of their explosion, a test chamber has been built. It is equipped with a system of sensors and a high-frequency recording system of pressure and temperature during a controlled explosion of an explosive charge. The results of the research will enable the development of new technologies for rock burst and methane prevention which will significantly increase workplace health and safety level. This paper presented results constitute the initial phase of research started in the middle of 2014.
Źródło:: Journal of Sustainable Mining; 2015, 14, 4; 188-194
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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