• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International symposium on modern mining safety technology >Research on the Diffusion of Oxygen in the Low-Temperature Oxidation of Sulfide Ore Stockpile in Confined Storage
【24h】

Research on the Diffusion of Oxygen in the Low-Temperature Oxidation of Sulfide Ore Stockpile in Confined Storage

机译：氧气低温氧化氧气在狭窄储存中的低温氧化中扩散研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Spontaneous combustion of sulfide ores is one of the major disasters of non-coal mines, especially in the course of ore exploitation, storage and transportation, the ores engender oxidative reaction and emit heat as a result of they were exposed to oxygen widely, with the heat accumulating the temperature of the ore pile continually rise and lead to spontaneous combustion. The previous works indicate that oxygen is one of the necessary factors to spontaneous combustion of sulfide ore, it is very significant to study the oxygen diffuse rule in the ore pile. Based on the low temperature oxidation theory of spontaneous combustion, gas diffusion theory in the loose medium and referred the previous research results of the coal on the spontaneous combustion, the paper analyzed the basic movement form of oxygen transmission and diffuseness, established the mathematical model of oxygen delivery process in sulfide ores pile, chose the refined ore storehouse of Anhui province Dongguashan Copper Mine as study object, used the computational fluid dynamic software to simulate the diffuse of oxygen and temperature change process, and discussed affect extent of some factors for spontaneous combustion of sulfide ore in the simulation process and the correlation between different factors. The research found that environment temperature, airflow rate, ore type and humidity play an important role in the ores oxidation reaction and spontaneous combustion, their influencing extent change with the size of the ore storehouse, storage time and the surrounding environment variations, it is useful to improve the spontaneous combustion theory of the sulfide ores and enhance the capacity of control and prevent the spontaneous combustion of sulfide ores.
机译：硫化物矿石的自发燃烧是非煤矿的主要灾害之一，特别是在矿石剥削，储存和运输过程中，矿物氧化反应和发热由于它们广泛地暴露于氧气，而且热量积聚矿石桩的温度不断上升并导致自发燃烧。以前的作品表明，氧气是硫化物矿石的自燃燃烧的必要因素之一，研究矿石中的氧气漫射规则是非常重要的。基于自发燃烧的低温氧化理论，气体扩散理论在松散的介质中，提到了先前的煤炭对自发燃烧的研究结果，分析了氧气传输和扩散的基本运动形式，建立了数学模型硫化物矿石桩中的氧气输送过程，选择了安徽省东圭山铜矿作为研究对象的精炼矿床，用来模拟氧气和温度变化过程的漫射，并讨论了一些因素的自发燃烧的影响程度硫化物矿石在模拟过程中的研究与不同因素的相关性。该研究发现，环境温度，气流率，矿石型和湿度在矿石氧化反应和自发燃烧中发挥着重要作用，它们的影响程度随着矿石仓库的大小而变化，储存时间和周围环境变化，它是有用的改善硫化物矿石的自发燃烧理论，增强控制能力，防止硫化物矿石的自发燃烧。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号