Prevention of explosion accidents by employing boron instead of aluminium in flash powder

Azhagurajan, A.; Prakash, L; Jeyasubramanian, K.

doi:10.1016/j.psep.2019.09.014

Cited by 23 publications

(5 citation statements)

References 13 publications

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“…The tip composition as per literature [3] comprises 28.57 % of KNO 3 , 28.57 % of Ba-(NO 3 ) 2 , 17.8 % of Al, and 25 % of dextrin. The chemicals like KNO 3 , Ba(NO 3 ) 2 , Al (Grade -999) and dextrin were procured of size < 45 μm [4][5][6][7] from the local fireworks suppliers in Sivakasi, a town in Tamilnadu, a state in India. The amorphous Boron powders (99 % pure) were purchased from LOBA Chemie, India.…”

Section: Methodsmentioning

confidence: 99%

“…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%

“…Recently, Azhagurajan et al. [4–7] 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: Introductionmentioning

confidence: 99%

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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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Section: Methodsmentioning

confidence: 99%

Section: Replacement Of Aluminium In Compositionsmentioning

confidence: 99%

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

Prakash¹,

Arumugachamy²,

Jeyasubramanian³

2022

Propellants Explo Pyrotec

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“…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%

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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Study of thermal and safety behaviour of nanoboron blended flash powder

Arumugachamy¹,

Pandian²,

Jeyasubramanian³

2021

J Therm Anal Calorim

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Prevention of explosion accidents by employing boron instead of aluminium in flash powder

Cited by 23 publications

References 13 publications

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

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

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

Study of thermal and safety behaviour of nanoboron blended flash powder

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