Factors affecting the minimum burning pressure of ammonium nitrate

WANG Xu; XU Sen; TIAN Yaokai; LIU Dabin

doi:10.11949/j.issn.0438-1157.20180023

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Factors affecting the minimum burning pressure of ammonium nitrate

更新时间：2025-12-10

- Factors affecting the minimum burning pressure of ammonium nitrate
- CIESC Journal Issue 8, Pages: 3754-3762(2018)
- 作者机构：
  
  1. 南京理工大学化工学院,江苏,南京,210094
  2. 国家民用爆破器材质量监督检测中心,江苏,南京,210094
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180023
  CLC： 932
- Online First：05 August 2018，
  
  Published：05 August 2018
- 稿件说明：
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WANG Xu, XU Sen, TIAN Yaokai, et al. Factors affecting the minimum burning pressure of ammonium nitrate[J]. CIESC Journal, 2018, (8): 3754-3762.
DOI：

WANG Xu, XU Sen, TIAN Yaokai, et al. Factors affecting the minimum burning pressure of ammonium nitrate[J]. CIESC Journal, 2018, (8): 3754-3762. DOI： 10.11949/j.issn.0438-1157.20180023.

摘要

在硝铵类炸药相关的生产、管理过程中，最小点火压力（MBP）已经成为重要的安全参数。工业炸药中硝酸铵常常与油相混合，为了研究混油硝酸铵在生产、储存及运输中的安全性，运用MBP值对其进行安全评估。使用热丝点火的方法探究温度及油含量对硝铵类炸药MBP值的影响。常温下对油含量为0~10%的11组样品进行测量，样品的MBP值从大于6 MPa，不断降低至1.59 MPa。并在20、75、100℃下分别对不同油含量的样品进行MBP值测量，油含量为4%、6%、8%、10%样品的MBP值分别从2.25、2.01、1.75、1.59 MPa降低至1.51、1.05、0.41、0.21 MPa。实验结果表明，常温下，混油硝酸铵样品的MBP值随油含量的升高而降低；控制样品的组分不变，得到样品在不同初始温度下的MBP值，则温度升高，混油硝酸铵的MBP值有明显的降低趋势。

Abstract

Ammonium nitrate based explosives do not undergo self-sustained combustion when the pressure is lower than some threshold value

which is called the minimum burning pressure (MBP). The MBP has become a significant parameter in the production and management of ammonium nitrate based explosives. In order to study the effect of oil content on the safety of ammonium nitrate

the MBP values of samples were measured by pressurized vessel test. At room temperature

samples with 0 to 10% oil content were measured

and the MBP values of the samples were reduced from 6 MPa to 1.59 MPa. Samples with 4%

8% and 10% oil content were measured at 20℃

75℃ and 100℃

and the MBP values of the samples decreased from 2.25

2.01

1.75 and 1.59 MPa to 1.51

1.05

0.41 and 0.21 MPa

respectively. The results showed that the MBP values decreased with the increase of oil content at normal temperature. In addition

the MBP values of the ammonium nitrate mixed with oil decreased obviously when the initial temperature was increased.

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