作者机构：
[文磊; 罗周全; 汪伟; 郑开欢] School of Resources and Safety Engineering, Central South University, Changsha;410083, China;[杨仕教] Nuclear Resources Engineering College, University of South China, Hengyang;421001, China;[文磊; 罗周全; 汪伟; 郑开欢] 410083, China
通讯机构：
[Wen, L.] S;School of Resources and Safety Engineering, Central South University, Changsha, China
作者机构：
[章求才; 田亚坤; 刘永; 张志军; 贺桂成] School of Nuclear Resources Engineering, University of South China, Hengyang, 421001, China;[刘玄钊] Lu'an Group, Changzhi, 046000, China;[李亚俊] Hunan Nonferrous Metallurgy Labor Protection Research Institute, Changsha, 410000, China
通讯机构：
School of Nuclear Resources Engineering, University of South China, Hengyang, China
作者机构：
[谭凯旋; 李春光; 谭婉玉] School of Nuclear Resources Engineering, University of South China, Hengyang, 421001, China;[夏良树] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[刘振中] School of Environmental Protection and Safety Engineering, University of South China, Hengyang, 421001, China
通讯机构：
School of Nuclear Resources Engineering, University of South China, Hengyang, China
作者机构：
[贺桂成; 张志军; 丁德馨] School of Nuclear Resources Engineering, University of South China, Hengyang;Hunan;421001, China;[刘生龙; 黄炳香] School of Mines, China University of Mining & Technology, Xuzhou;Jiangsu
通讯机构：
[Ding, D.] S;School of Nuclear Resources Engineering, University of South China, Hengyang, Hunan, China
作者机构：
[王佩新; 曹平; 陈瑜; 王聪聪] School of Resources and Safety Engineering, University of Central South, Changsha;410083, China;[蒲成志] School of Nuclear Resources Engineering, University of South China, Hengyang;421001, China;[范祥] School of Highway, University of Chang'an, Xi'an
通讯机构：
[Cao, P.] S;School of Resources and Safety Engineering, University of Central South, Changsha, China
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.
期刊：
Journal of Engineering and Technological Sciences,2017年49(2):247-260 ISSN：2337-5779
作者机构：
[Sun, Bing; Xie, Jie-Hui] School of Civil Engineering, University of South China, Hengyang, 421001, China;[Zeng, Sheng] School of Nuclear Resources Engineering, University of South China, NO28, West Changsheng Road, Hengyang, 421001, China
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
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：
Ye, Yong-jun*;Zhang, Yun-feng;Dai, Xin-tao;Ding, De-xin
期刊：
Journal of Environmental Radioactivity,2017年177:135-141 ISSN：0265-931X
通讯作者：
Ye, Yong-jun
作者机构：
[Ye, Yong-jun; Ding, De-xin] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.;[Dai, Xin-tao; Ye, Yong-jun; Zhang, Yun-feng] Univ South China, Sch Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Ye, Yong-jun] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
关键词：
Free radon production rate;Granulated porous media;Permeability;Porosity;Radon diffusion coefficient
摘要：
The particle size and heaped methods of exhalation media have important effects on physical parameters, such as the free radon production rate, porosity, permeability, and radon diffusion coefficient. However, existing methods for determining those parameters are too complex, and time-consuming. In this study, a novel, systematic determining method was proposed based on nuclide decay, radon diffusion migration theory, and the mass conservation law, and an associated experimental device was designed and manufactured. The parameters of uranium ore heap and sandy soil of radon diffusion coefficient (D), free radon production rate (alpha), media permeability (k), and porosity (epsilon) were obtained. At the same time, the practicality of the novel determining method was improved over other methods, with the results showing that accuracy was within the acceptable range of experimental error. This novel method will be of significance for the study of radon migration and exhalation in granulated porous media. (C) 2017 Elsevier Ltd. All rights reserved.
作者：
Ye, Y. J.*;Liang, T.;Ding, D. X.;Lei, B.;Su, H.;...
期刊：
IOP Conference Series: Earth and Environmental Science,2017年73(1) ISSN：1755-1307
通讯作者：
Ye, Y. J.
作者机构：
[Ye, Y. J.; Ding, D. X.] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Ye, Y. J.; Liang, T.; Zhang, Y. F.; Su, H.; Lei, B.] Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Ye, Y. J.] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
International Conference on Sustainable Energy Engineering (ICSEE)
会议时间：
JUN 12-14, 2017
会议地点：
Perth, AUSTRALIA
会议主办单位：
[Ye, Y. J.;Ding, D. X.] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.^[Ye, Y. J.;Liang, T.;Lei, B.;Su, H.;Zhang, Y. F.] Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
IOP Conference Series-Earth and Environmental Science
摘要：
A calculation model for radon concentration in shrinkage mining stopes under various ventilation conditions was established in this study. The model accounts for the influence of permeability and area of the blasted ore heap, ventilation air quantity, and airflow direction on radon concentration in a confined workspace; these factors work together to allow the engineer to optimize the ventilation design. The feasibility and effectiveness of the model was verified by applying it to mines with elevated radon radiation exposure. The model was found to accurately changes in radon concentration according to the array of influence factors in underground uranium mines.
通讯机构：
[Ding, De-xin] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
Gold bearing high arsenic sulphide concentrate;Microwave roasting;Water content;Iodide/iodine leaching
摘要：
A new technology for enhancing microwave roasting of gold bearing high arsenic sulphide concentrate with various water contents was proposed. The influence of water content and roasting time on microwave roasting of gold concentrate was investigated, and the mechanism of microwave roasting of gold bearing high arsenic sulphide concentrate with various water contents was analyzed. The results show that the removal rate of sulfur and iodide/iodine leaching rate of gold are mainly dependent on water content. The removal rate of sulfur and the leaching rate of gold reaches 87.95% and 75.08%, respectively, under the conditions of water content of 9% with microwave roasting for 30 min. After the dried concentrate sample and the wetted concentrate sample with 9% water content were roasted in the microwave oven for 60 min, the latter was found by SEM to be more porous than former, its specific surface area was found to increase from 25.6 to 32.7 m(2)/g. (C) 2017 Elsevier B.V. All rights reserved.
