Measurement of MIE and LOC for flash powder mixture containing boron to authenticate safety in firework industries

Azhagurajan, A.; Prakash, L; Jeyasubramanian, K.; Christa, S.T. Jaya

doi:10.1016/j.measurement.2019.107435

Cited by 12 publications

(8 citation statements)

References 12 publications

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“…This is because; Boron is insensitive to physical loads and is a poor conductor of heat when compared with aluminium. Even though boron has high calorific value and energy as per literature, it has high stability, that is, high electron negativity (2.04 ‐ Pauling scale), high activation energy (205 kJ/mol), high minimum ignition energy (60 mJ), and high first ionization energy (800.6 kJ/mol) 23 . Hence, increasing the boron percentage in the flash powder reduces the mixture's sensitiveness to flame and temperature.…”

Section: Experimentation and Resultsmentioning

confidence: 98%

“…From Figure 2, it is observed that the size of the particles is greatly reduced and is around 200 nm. Therefore, the flash powder mixtures are prepared similar to our earlier work 23 . These mixtures are subjected to the experimentation and the results are evaluated.…”

Section: Experimentation and Resultsmentioning

confidence: 99%

“…As a result, determining the minimum ignition temperature is of much important to prevent accidents. Researchers worked on determining the impact and frictional sensitivity, 22 minimum ignition energy 23 for pyrotechnic flash compositions, but the temperature exposure limit has not been found out for any of the pyrotechnic compositions. Hence, this work focuses on determining the MIT of the pyrotechnic flash composition.…”

Section: Introductionmentioning

confidence: 99%

“…Here, aluminium metal powder can be replaced by some other metal powder, which has some less sensitivity. It is observed from the literature 22,23 that the addition of boron in firework mixture increases the safety towards impact, friction and static discharge without compromising the quality. But the sensitivity to temperature has not been determined.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Arumugachamy¹,

Pandian²,

Jeyasubramanian³

2021

Fire and Materials

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Summary In fireworks industries, mixing and filling of chemicals are being done manually and hence, dust formation is inevitable. Due to inherent nature of ingredients like aluminium metal powder, which has more combustible and the possibilities of dust explosion are merely high. Nowadays, the use of boron as a replacement of aluminium in firecracker mixtures is being researched upon. Hence, this paper aims at measuring the minimum ignition temperature (MIT) of existing and boron blended firework composition by using Godbert Greenwald furnace. Nowadays, many firework industries are employing automation. In such places, by limiting the level of oxygen supply with Nitrogen gas, the accidents can be avoided. Hence, the limiting oxygen concentration (LOC) is also measured. It has been concluded that the probability of ignition is higher when the replacement level of aluminium with boron is less than 70% at a concentration of 1456 g/m3 with less than 75% inert gas level. The safe margin has been found which will be useful for risk assessment study.

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Section: Experimentation and Resultsmentioning

confidence: 98%

Section: Experimentation and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Arumugachamy¹,

Pandian²,

Jeyasubramanian³

2021

Fire and Materials

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“…The only way to avoid failure is to find a substitute for the reactive material (aluminium) used in these mixtures. Recently, Azhagurajan et al [4][5][6][7] used boron powders as a replacement or partial substituent for aluminium. Their research intended to reduce the sensitivity of the flash powder mixture which is used in firework industries.…”

Section: Replacement Of Aluminium In Compositionsmentioning

confidence: 99%

Prevention of Self Decomposition in Pyrotechnic Wet Mixtures by Replacing Aluminium with Boron

Prakash¹,

Arumugachamy²,

Jeyasubramanian³

2022

Propellants Explo Pyrotec

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In fireworks industries, water-added mixtures like tip mixtures, and aerial star pellet coatings are susceptible to self-decomposition because aluminium readily reacts with water that is used with them. While adding water to the tip mixture, the aluminium undergoes hydration and forms an oxide. It also liberates heat and hydrogen gas, which leads to an explosion. Similarly, the star pellets coated with aluminium also had the same problem. To avoid the hazard due to self-decomposition, partial replacement of aluminium powder helps in the reduction of workplace accidents/injuries. Recently, researchers used boron as a substituent for aluminium in dry mixtures such as flash powder composition. In this work, the use of aluminium in the wet mixtures is gradually replaced with boron. The thermal analysis and the decomposition tests were conducted for the boron-blended wet mixtures. The performance characteristics of boron-blended tip mixtures and star pellets were evaluated to determine the optimum level of replacement to sustain the quality with improved safety.

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Investigation of the usability of boron industrial waste as filler in conveyor belt production

Şahbaz

Gurer²,

Goksu³

et al. 2022

J Mater Cycles Waste Manag

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Measurement of MIE and LOC for flash powder mixture containing boron to authenticate safety in firework industries

Cited by 12 publications

References 12 publications

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Prevention of Self Decomposition in Pyrotechnic Wet Mixtures by Replacing Aluminium with Boron

Investigation of the usability of boron industrial waste as filler in conveyor belt production

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