期刊：
Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy,2015年124(3):132-136 ISSN：2572-6641
通讯作者：
Xu, L.
作者机构：
[J. Zhao; L. Xu; T. Xie] State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing University, Chongqing400044, China;[C. Xie] School of Environmental Protection and Safety EngineeringUniversity of South China, Hengyang421001, China
通讯机构：
[L. Xu] S;State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing University, Chongqing400044, China
作者机构：
[Yongjun Y.; Xiangyang L.; Shuyun W.] School of Environmental Protection and Safety Engineering, University of South China, Hengyang, 421001, China;[Longjun X.] State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China;[Chao X.] School of Environmental Protection and Safety Engineering, University of South China, Hengyang, 421001, China, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
通讯机构：
[Xu Longjun] S;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China
摘要：
Mn-Zn ferrite powders were produced from low-grade manganese ore (LMO) via the chemical coprecipitation method combined with the ceramic method, after the LMO was leached in sulfuric acid and the obtained solution was purified. The effect of the pH on the magnetic properties of Mn-Zn ferrite was investigated by the varying pH of the co-precipitation system. The crystal structure and phases of the samples were characterized by X-ray diffraction and infrared spectrum, respectively. The magnetic measurements were carried out on a vibrating sample magnetometer. The optimal sample was obtained with a saturation magnetization of 55.02 emu/g, a coercivity of 8.20 G and a remanent magnetization of 1.71 emu/g when pH is 7.5.
摘要：
Total suspended particle (TSP) and fine particulate matter (PM2.5) samples were collected continuously using an atmospheric particulate matter sampler at sampling points in a tailings reservoir in the south from October 28 to November 3, 2013. The mass concentrations of particulate matter in the air, the contents, and morphological analysis of heavy metal elements (Pb, Cd, U, Cu) were also studied. The results indicate that the air particulate matter concentrations exceed the mass concentration limits of national Grade II ambient air quality standard (GB3095-2012); The heavy metals content in air particulate matter from high to low order is: Pb > Cu > U > Cd and heavy metals are easier to be concentrated on fine particulate matter (PM2.5); heavy metal elements (Pb, Cd, Cu) exist mainly in the exchangeable morphology, especially the element Cd.
作者机构：
[叶勇军; 赵娅利; 谢东; 李向阳; 钟永明; 王立恒] School of Environment Protection and Safety Engineering, University of South China, Hengyang, China;[叶勇军; 丁德馨] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 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：
[叶勇军; 王立恒; 曹雅琴; 赵娅利; 范楠彬] School of Environmental Protection and Safety Engineering, University of South China, Hengyang, China;[丁德馨] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 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：
[张力; 青涛; 蒋建军; 李鹏程; 王以群] Human Factors Institute, School of Economic &, Management, University of South China, Hengyang, China;[陈文] School of Environmental Protection and Safety Engineering, University of South China, Hengyang, China;[彭玉元] Department of Computer Engineering, Guangzhou College of Commerce, Guangzhou, China;[张力] Hunan Institute of Technology, Hengyang, China
摘要：
A three dimensional bounce-averaged Fokker-Planck (FP) numerical code has been newly developed based on fully implicit iterative solving method, and relativistic effect is also included in the code. The code has been tested against various benchmark cases: Ohmic conductivity in the presence of weak Ohmic electric field, runaway losses of electrons in the presence of strong Ohmic electric field, lower hybrid current drive and electron cyclotron current drive via two- or three-dimensional simulation. All the test cases run fast and correctly during calculations. As a result, the code provides a set of powerful tools for studying radio frequency wave heating and current drive in tokamak plasmas.
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：
[王立恒; 钟永明; 范楠彬; 赵娅利; 叶勇军] School of Environment Protection and Safety Engineering, University of South China, Hengyang, China;[叶勇军; 丁德馨] Key Discipline Lab for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
通讯机构：
School of Environment Protection and Safety Engineering, University of South China, Hengyang, China
作者机构：
[周孙林; 唐东山] Key Laboratory of Pollution Control and Resource Reuse of University of South China, College and University of Hunan Province, Hengyang , China;[唐东山] Institute of Environmental Protection and Safety Projects, University of South China, Hengyang , China;[姜鹏; 李富超; 陈华新] Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
通讯机构：
Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
作者机构：
[喻英; 刘丹青; 房琦; 宋少宇; 李义连] School of Environmental Studies, China University of Geosciences, Wuhan , China;[程鹏] Team 217 of Hunan Bureau of Nonferrous Geological Exploration, Hengyang , China;[房琦] School of Environmental Protection and Safety Engineering, University of South China, Hengyang , China
通讯机构：
School of Environmental Studies, China University of Geosciences, Wuhan, China
期刊：
Electronic Journal of Geotechnical Engineering,2014年19(M):2829-2838 ISSN：1089-3032
作者机构：
[Feng, Sheng-yang; Wei, Li-min; Qun, He] School of Civil Engineering, Central South University, Changsha 410075, China;[Feng, Sheng-yang; Jiang, Fu-liang] School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421000, China
作者机构：
[贺永强; 杨仕教] School of Nuclear Resources Engineering, University of South China, Hengyang , China;[陈荣] School of Environment and Safety Engineering, University of South China, Hengyang , China;[罗辉] Geotechnical Engineering Research Center, Hunan Yanneng Design Studies Ltd., Hengyang , China
通讯机构：
School of Nuclear Resources Engineering, University of South China, Hengyang, China
作者机构：
[XIE Chao; PENG Tiefeng; CHEN Kun; XU Longjun; ZHAO Jing] State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China;[CHEN Kun] College of Safety Engineering, Chongqing University of Science and Technology, Chongqing, 400042, China;[PENG Tiefeng] School of Chemical Engineering, University of Queensland, Brisbane, QLD, 4072, Australia;[XIE Chao] School of Environmental Protection and Safety Engineering, University of South China, Hengyang, 421001, China
通讯机构：
[Longjun Xu] S;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China
摘要：
Manganese was extracted from leaching low-grade manganese ore in sulfuric acid medium. The effects of granule diameter, leaching time, liquid/solid ratio (V/W) and the concentration of sulfuric acid were investigated through orthogonal and single factor experiments. The experimental results showed that the optimal leaching conditions are, size of 0.054mm, 120 minutes of reaction time, 3(V/W) of liquid/solid ratio and 30% of the concentration of sulfuric acid (g/g). Under those conditions, the leaching efficiency is 96.73%. The kinetics of the leaching process is in accordance with the characteristics of fractal reaction.
作者机构：
[夏良树; 黄欣] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;[吕俊文] School of Environment Protection and Safety Engineering, University of South China, Hengyang 421001, China;[曹存存; 陈伟] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
通讯机构：
School of Nuclear Science and Technology, University of South China, China
摘要：
The length of the pre-splitting crack is an important parameter in underground mine deep-hole blasting, and experience and engineering analogy methods are used commonly, but they seldom have scientific and theoretical basis. In this paper, the mature numerical analysis software - ANSYS/LS-DYNA was adopted, the different lengths of pre-splitting crack were simulated. In the filling body, the corresponding maximum blasting vibration velocity and stress are obtained by numerical simulation when the maximum initiation section blasted. The corresponding regression formulas are obtained by using the least square method, and the optimal length of the pre-splitting crack is 12 m through the calculation. Proved by practice, this method to get the length of the pre-splitting crack is scientific and effective, can be extended in other similar blasting engineering.
