scholarly journals Badanie wpływu dodatku azotanu(V) amonu na właściwości wybuchowe masy aktywnej Rocksplittera

2018 ◽  
pp. 59-68
Author(s):  
Andrzej Maranda ◽  
Józef Paszula ◽  
Maciej Grądziel ◽  
Victor Zrobok
Keyword(s):  
Grain Size ◽  
Rock Mass ◽  
Sodium Chloride ◽  
Ammonium Nitrate ◽  
Sodium Chlorate ◽  
Blast Waves ◽  
Air Blast ◽  
Explosion Products ◽  
Velocity Of Detonation ◽  
Loaded Rock

The Rocksplitter’s active mixture, which consists of sodium chlorate(V) (SC) and oil, is characterized by the lack of detonation capability and the presence of solid sodium chloride particles in the explosion products that reduce the volume of gas. The reduction of gaseous explosion products under certain conditions may be a disadvantage, reducing the effectiveness of Rocksplitter’s impact on the loaded rock mass, which may be a significant limitation in the use of this product. Replacing some of the sodium(V) chlorate(V) with ammonium nitrate(V) (AN) should partly eliminate this disadvantage. In this work, the results of research on selected detonation and explosive parameters of tertiary mixtures of SC - AN - oil are presented. The influence of grain size of AN was also investigated. AN was used granulated and ground. The ability to detonate, velocity of detonation and intensity of air blast waves in the functioning of the contents of individual components has been set.

Far Transmission of Air Blast Waves

1958 ◽  
Vol 1 (2) ◽  
pp. 95 ◽  
Author(s):  
Everett F. Cox
Keyword(s):  
Blast Waves ◽  
Air Blast

STUDY OF CHANNELING OF AIR BLAST WAVES

1963 ◽  
Author(s):  
C. Wilton ◽  
N.R. Wallace ◽  
K. Kaplan
Keyword(s):  
Blast Waves ◽  
Air Blast

Activation energy and sub grain size-creep rate relations in sodium chloride

1974 ◽  
Vol 29 (2) ◽  
pp. 423-427 ◽  
Author(s):  
S. L. Robinson ◽  
P. M. Burke ◽  
O. D. Sherby
Keyword(s):  
Activation Energy ◽  
Grain Size ◽  
Sodium Chloride ◽  
Creep Rate

The effects of sodium chloride on the explosive performance of ammonium nitrate

2013 ◽  
Vol 115 (2) ◽  
pp. 1759-1766 ◽  
Author(s):  
Liu Tan ◽  
Qiujie Wu ◽  
Xiang Chen ◽  
Wei Jiang ◽  
Sen Xu ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Ammonium Nitrate ◽  
Explosive Performance

scholarly journals THE RESULTS OF STUDIES OF THE DEPENDENCE OF THE PERFORMANCE OF THE VIBRATING TWO-SHAFT CENTRIFUGAL MODULE ON THE MODE AND DESIGN PARAMETERS

2019 ◽  
pp. 5-10
Author(s):  
Vladimir Naduty ◽  
Anastasia Loginova ◽  
Vitaliy Sukharev
Keyword(s):  
Rock Mass ◽  
Vibration Amplitude ◽  
Experimental Studies ◽  
Design Parameters ◽  
Crushed Rock ◽  
Experimental Sample ◽  
Elastic Supports ◽  
Loaded Rock ◽  
The Given

The article presents a new design of a vibrating twin-shaft centrifugal module designed for grinding and classification of rock mass. In this design, in addition to grinding, the operation of classification or screening of the crushed mass was added, which does not allow its regrinding and increases the productivity of the device. This is achieved by installing in the bottom of the chamber grinding mesh with cells in accordance with the required class size. At the same time, the classification process is intensified by the presence of vibration from vibration exciters fixed on the camera body and the installation of the camera on elastic supports. The reciprocating horizontal vibrations of the chamber with a given amplitude and frequency contribute to the segregation of the crushed rock mass in the bed by size, which positively affects the efficiency of classification and grinding. The presence of vibration helps to unload the oversize product from the grinding chamber. Also, the article considers experimental studies performed on a vibrational two-shaft centrifugal module to determine the dependence of the performance of a given design on five variable factors: rotor shaft revolutions (n, rpm), size of the loaded rock mass (Δ, mm), rock mass strength (σ, kg/mm2), camera vibration frequency (ω, rpm) and its vibration amplitude (A, mm). Studies have shown the efficiency and increased productivity of the new design in relation to a centrifugal disintegrator without a classification grid and vibration. The results of the work allow us to recommend the design under study for the manufacture of an experimental sample according to the given initial requirements, and the established dependences (Q = f (n, Δ, σ, ω, A) make it possible to develop a mathematical model of the grinding process in this setup to calculate the required parameters.

scholarly journals Effect of ambient pressure on propagation characteristics and laws of air blast waves

AIP Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 115217
Author(s):  
Fei Deng ◽  
Wei Xiao ◽  
Min Song ◽  
Yuancheng Zhang
Keyword(s):  
Ambient Pressure ◽  
Blast Waves ◽  
Propagation Characteristics ◽  
Air Blast
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