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Zeyun S.,Xian University of Architecture and Technology | Yong L.,China MCC20 Group Corporation Ltd. | Qinghua G.,Luoyang Luanchuan Molybdenum Industry Group Inc.
Advances in Information Sciences and Service Sciences | Year: 2012

In view of the request of wireless accurate position of workers and equipments, the characteristics of wireless signal transmission and position have been analyzed. Based on the Two Way Arrival and Symmetric Double Sides Two Way Arrival, a multi-Access points Centroid wireless Localization algorithm of area was designed in this paper. And The simulation shows that this algorithm performance is stable, reduces the spread and a range of error by NLOS and can improve the degree of wireless Localization accuracy in underground. Source


Li F.,Xian University of Architecture and Technology | Gu Q.,Xian University of Architecture and Technology | Jing S.,Luoyang Luanchuan Molybdenum Industry Group Inc.
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011 | Year: 2011

Using GIS(Geographic Information System), GPS(Global Positioning System), GPRS(General Packet Radio Service), Systems engineering theory and Optimization techniques, the digital integrated system of mining production and management in open pit has been designed and developed. Based on the production process design in open pit, the system not only automatically generate the production plan of ore blending, but also achieve the production intelligent dispatch of trucks and shovels, automatic statistics to the number of ore traffic and real-time monitoring of production data. Experiments on real scenes show that this system's performance is stable and can satisfy the request in open pit. © 2011 IEEE. Source


Gu Q.-H.,Xian University of Architecture and Technology | Gu Q.-H.,Luoyang Luanchuan Molybdenum Industry Group Inc. | Wu Q.,Xian University of Architecture and Technology | Lu C.-W.,Xian University of Architecture and Technology
Journal of Coal Science and Engineering | Year: 2013

In order to effectively avoid the defects of a traditional discounted cash flow method, a trinomial tree pricing model of the real option is improved and used to forecast the investment price of mining. Taking Molybdenum ore as an example, a theoretical model for the hurdle price under the optimal investment timing is constructed. Based on the example data, the option price model is simulated. By the model, mine investment price can be computed and forecast effectively. According to the characteristics of mine investment, cut-off grade, reserve estimation and mine life in different price also can be quantified. The result shows that it is reliable and practical to enhance the accuracy for mining investment decision. © 2013 The Editorial Office of Journal of Coal Science and Engineering (China) and Springer-Verlag Berlin Heidelberg. Source


GU Q.,Xian University of Architecture and Technology | LU C.,Xian University of Architecture and Technology | GUO J.,Xian University of Architecture and Technology | JING S.,Luoyang Luanchuan Molybdenum Industry Group Inc.
Mining Science and Technology | Year: 2010

Using GIS, GPS and GPRS, a dynamic management system of ore blending in an open pit mine has been designed and developed. A linear program was established in a practical application. The system is very good at automatically drawing up a daily production plan of ore blending and monitors and controls the process of mining production in real time. Experiments under real conditions show that the performance of this system is stable and can satisfy production standards of ore blending in open pit mines. © 2010 China University of Mining and Technology. Source


Hou F.,Henan University of Science and Technology | Ni F.,Henan University of Science and Technology | Cui Y.,Luoyang Luanchuan Molybdenum Industry Group Inc. | Hou M.,Luoyang Hi. Technology Molybdenum and Tungsten Material Company | And 2 more authors.
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2011

The microstructure of Al 2O 3/Mo composite was analyzed and the wear behavior was tested. The analysis results of wear data and wear morphology show that the amount of density first increases and then decreases gradually, but hardness increased with the increasing of the volumn fraction of Al 2O 3. There is some degree of reduction on the wear produced by the process of cutting, plowing. When the Al 2O 3 volume fraction is 3%, the specific wear rate of composites increases gradually with the particle size decreases. However, at higher Al 2O 3 volume fraction (5%, 10%, 15%), the specific wear rate first increases and then decreases with the increasing of abrasive grain diameter. The wear loss increases with the increase of the load, while there is no influence on the order. On the same load, the wear loss shows a declining trend with the continuous increase of Al 2O 3 content, but the speed is slower. Source

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