作者机构:
[张晓文; 李密; 张彪; 黄婧] School of Environment Protection and Safety Engineering, University of South China, Hengyang, 421001, China;[丁德馨; 叶勇军] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China;[张晓文; 李密] Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang, 421001, China
通讯机构:
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
作者机构:
[冯永富; 胡淼; 赵维超; 胡南; 丁德馨] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China
通讯机构:
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
摘要:
To explore a new evaluation method for spontaneous combustion tendency of different areas in sulfide ore heap, ore samples from a pyrite mine in China were taken as experimental materials, and the temperature variations of the measuring points of simulated ore heap were measured. Combined with wavelet transform and nonlinear parameters extraction, a new method for spontaneous combustion tendency of different areas in sulfide ore heap based on nonlinear parameters was proposed and its reliability was verified by field test. The results indicate that temperature field evolution of the simulated ore heap presents significant spatial difference during self-heating process. Area with the maximum increasing extent of temperature in sulfide ore heap changes notably with the proceeding of self-heating reaction. Self-heating of sulfide ore heap is a chaotic evolution process, which means that it is feasible to evaluate spontaneous combustion tendency of different areas by nonlinear analysis method. There is a relatively strong correlation between the maximum Lyapunov exponent and spontaneous combustion tendency with the correlation coefficient of 0.9792. Furthermore, the sort of the maximum Lyapunov exponent is consistent with that of spontaneous combustion tendency. Therefore, spontaneous combustion tendency of different areas in sulfide ore heap can be evaluated by means of the maximum Lyapunov exponent method.
作者机构:
[李广悦; 王浩; 丁德馨; 李峰; 喻清; 胡南] Key Discipline Laboratory of Defense Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China;[喻清] School of Resources and Safety Engineering, Central South University, Changsha, 410083, China
通讯机构:
Key Discipline Laboratory of Defense Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
作者机构:
[谢睿; 余丽梅; 蒲移秋; 彭国文] School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China;[肖方竹; 彭国文; 刘永] Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment, University of South China, Hengyang, 421001, China;[肖方竹; 彭国文] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China
通讯机构:
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
作者机构:
[蒲成志; 章求才] School of Nuclear Resources Engineering, University of South China, Hengyang, Hunan, 421001, China;[张春阳] School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China;[曹平; 张春阳] School of Resource and Safety Engineering, Central South University, Changsha, Hunan, 410083, China
通讯机构:
[Zhang, Q.-C.] S;School of Nuclear Resources Engineering, University of South China, Hengyang, Hunan, China
作者机构:
[Mao JingWen; Sun Jia; Yao FoJun] Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China.;[Duan XianZhe] Univ South China, Sch Nucl Resource Engn, Hengyang 421001, Peoples R China.
通讯机构:
[Sun Jia] C;Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China.
作者机构:
Nuclear Resources Engineering College, University of South China, Hengyang, Hunan 421001, China;[胡杰; 王李管] Research Center of Digital Mine, Central South University, Changsha, 410083, China;[陶干强] Nuclear Resources Engineering College, University of South China, Hengyang, Hunan 421001, China;[朱忠华] Nuclear Resources Engineering College, University of South China, Hengyang, Hunan 421001, China, Research Center of Digital Mine, Central South University, Changsha, 410083, China
通讯机构:
[Tao, G.] N;Nuclear Resources Engineering College, University of South China, Hengyang, Hunan, China
作者机构:
[李广悦; 刘玉龙; 丁德馨; 王有团; 胡南] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China;[马亮; 刘玉龙] CGNPC Uranium Resources Co., Ltd., Beijing, 100029, China
通讯机构:
Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China