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1. Study on the technology of reinforcing railway bridge in mining area | |||
WANG Changhao,ZHANG Wenquan | |||
Mine Engineering and Technology 19 July 2017 | |||
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Abstract:Underground mining in Shitun coal mine is affecting security operations of Pangzhuang railway bridge. Based on the specific situation of railway bridge,adopted the measure that padded the bridge by building bricks and then set lifting steel beams etc. to ensure its safe operation through data analysis and subsidence deformation prediction. Which has achieved economic and social benefits and provided scientific reference for the safe mining under railway bridge with the similar condition. | |||
TO cite this article:WANG Changhao,ZHANG Wenquan. Study on the technology of reinforcing railway bridge in mining area[OL].[19 July 2017] http://en.paper.edu.cn/en_releasepaper/content/4738664 |
2. Damage Creep Analysis and Instability Delay Time of Ultrahigh pillar considering Initial Transverse Deformation | |||
FU Jianxin,SONG Weidong | |||
Mine Engineering and Technology 12 June 2016 | |||
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Abstract:According to the ultrahigh pillar structure and mechanical characteristics, considering the initial geometric deviation caused by mining disturbance, the simplified model of the pressure bar is established. Based on elastic-plastic theory, the deflection and internal forces of ultrahigh pillar with initial geometric imperfections are analyzed and discussed. And based on the Kachanov theory of damage, the damage of ultrahigh pillar is analyzed, the damage failure time is calculated. The results show that under the influence of the initial deflection, pillar will appear different degree of additional deflection, which grows with the increase of initial deflection and pressure ratio. Analysis of engineering examples show that the start time of damage and instability of delay time of pillar has close relationship with initial deflection, pressure ratio and compressive strength. With the increase of pressure ratio and initial deflection, the damage incubation time and the instability of delay time quickly become small, the greater the compressive strength, the greater the instability of the delay time, which means that the pillar is more stable. The results of this study provide a theoretical basis for stability analysis and control of ultrahigh pillar. | |||
TO cite this article:FU Jianxin,SONG Weidong. Damage Creep Analysis and Instability Delay Time of Ultrahigh pillar considering Initial Transverse Deformation[OL].[12 June 2016] http://en.paper.edu.cn/en_releasepaper/content/4696985 |
3. Flotation seperation of low grade and complex rutile ore in Zaoyang and interaction of rutile with octyl hydroxamic acid | |||
WANG Jun,LIU Bei,CHENG hongwei,LI Kaiyun,QIN Wenqing,QIU Guanzhou | |||
Mine Engineering and Technology 19 March 2015 | |||
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Abstract:The flotation separation of rutile ore in Zaoyang was investigated by raw ore experiments and pure mineral tests. The mechanism of rutile with octyl hydroxamic acid (OHA) as collector was further studied by Zeta potential measurement and Infrared spectrum measurement. Raw ore experiment results indicate that rutile can be recycled effectually by using C5~9 hydroxamic acid as collector. The rutile grading of flotation concentrate can reach to 43.25% with the recovery of 69.10%.The pure mineral tests indicate that octyl hydroxamic acid(OHA) is an effective collecter of rutile and andradite, and rutile can be activated remarkably by lead nitrate while andradite not. Sodium fluosilicate was found to be an effective selective depressor for andradite. Zeta potential measurements and Infrared spectrum measurements indicate chemisorption and physically absorption are occured on the surface of rutile with OHA and stable pentabasic chelate are formed. | |||
TO cite this article:WANG Jun,LIU Bei,CHENG hongwei, et al. Flotation seperation of low grade and complex rutile ore in Zaoyang and interaction of rutile with octyl hydroxamic acid[OL].[19 March 2015] http://en.paper.edu.cn/en_releasepaper/content/4634162 |
4. Real-time analysis and online prediction of the process parameters in the process of a dense medium separation | |||
KUANG Yali,Wang Zhangguo,Ge Jun | |||
Mine Engineering and Technology 06 March 2014 | |||
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Abstract:The process parameters of the dense medium separation used to be predicted in the design process of a coal preparation plant. The data calculated in a month synthesizing and detected by a detectors is only that after the event. A online prediction system for the process parameters of dense medium separation system were developed. The system could accomplish the calculation of coal preparation recovery rates and productivities in real-time, the prediction of the density composition of the feeded raw coal, the concentrate yield, the efficiency and the density of the dense medium separation on line. The achieved parametes could be transmitted to the control system as the given control limite index. The system has been used in the product line efficaciously. | |||
TO cite this article:KUANG Yali,Wang Zhangguo,Ge Jun. Real-time analysis and online prediction of the process parameters in the process of a dense medium separation[OL].[ 6 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4586986 |
5. Effect of temperature on the leaching of copper oxide ore in phosphoric acid solution and kinetics | |||
WU Dandan,LIU Shaowen,WEN Shuming,DENG Jiushuai,JI Cuicui | |||
Mine Engineering and Technology 25 December 2013 | |||
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Abstract:In this study, copper extraction from copper oxide ore using phosphoric acid solution as leaching agent was investigated, wherein the effects of the main factor temperature on the leaching of the copper oxide ore was researched, together with the leaching kinetics. It was experimentally demonstrated that the copper leaching rate increased with the increasing reaction temperature. Moreover, the leaching process can be described by the shrinking core model for surface chemical reaction. The activation energy of the leaching process was determined to be 30.65kJ/mol.. | |||
TO cite this article:WU Dandan,LIU Shaowen,WEN Shuming, et al. Effect of temperature on the leaching of copper oxide ore in phosphoric acid solution and kinetics[J]. |
6. Recovering copper from copper oxide ore by flotation and leaching | |||
Chao Lv,LIU Shaowen,WEN Shuming,BAI Shaojun | |||
Mine Engineering and Technology 25 December 2013 | |||
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Abstract:The copper oxide ore is high oxidation ratio and the high combination ratio with a low grade of Cu 0.71%. Copper concentrate of Cu 15.02% with a recovery of 38.55% was obtained by flotation. The optimum acid leaching conditions were investigated. Effects of lixiviant concentration, solid-to-liquid ratio, leaching time were investigated. The acid leaching efficiency was 78.75% relative to flotation tailings. | |||
TO cite this article:Chao Lv,LIU Shaowen,WEN Shuming, et al. Recovering copper from copper oxide ore by flotation and leaching[OL].[25 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4576754 |
7. The Research on Teeth Invade Bottomhole Rock Basing on Unified Strength Theory | |||
LI Wei,YAN Tie,Li Siqi | |||
Mine Engineering and Technology 18 March 2013 | |||
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Abstract:Considering the condition of the bottom hole pressure, basing on unified strength theory to analyze the mechanical process of teeth invade rock, build bottomhole rock intrusive equation with unified strength parameters and give intrusive coefficient without the impact of axial load, invasion depth and bit angle. The equation considers the impacts of intermediate stress on intrusive coefficient. The results of the equation and Mohr-Coulomb strength theory are identical when b equals to 0. Analyze the impact of angle of internal friction, fluid column pressure, pore pressure and bit angle on intrusive coefficient. The results show that with b, angle of internal friction and bit angle, fluid column pressure and pore pressure increasing, the intrusive coefficient increases, increases exponentially, increases linearly and decreases linearly respectively. | |||
TO cite this article:LI Wei,YAN Tie,Li Siqi. The Research on Teeth Invade Bottomhole Rock Basing on Unified Strength Theory[OL].[18 March 2013] http://en.paper.edu.cn/en_releasepaper/content/4528766 |
8. Research on Real-time Forecasting and Evaluation of Tailings Reservoir Based on Multi-Sensor Data Fusion | |||
YANG Yuting,CHEN Xiaofang,GUI Weihua,WANG Gangyi | |||
Mine Engineering and Technology 28 February 2013 | |||
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Abstract:The stability and safety of the tailings reservoir plays an important role in the mining production and environmental protection, so the safety evaluation and real-time forecasting are very essential. Comprehensive evaluation and decision-making of tailings reservoir is a non-linear system, thus, an overall framework of multi-sensor data fusion was firstly designed in this paper. Secondly, a set of structured features can be obtained. Then the safety assessment model of tailings reservoir was established based on the structured featured-set described above. Furthermore, the whole system was given through the data flow diagram of the functional module. Finally, based on practice of the projects of tailings reservoir, the evaluation results are analyzed to explore the security risks in the tailings reservoir. In order to improve the accuracy of the data with tailings reservoir on-line monitoring system and the disaster forecast level, after verification and simulation, a theoretical basis can be provided for further rectification and reform.????? | |||
TO cite this article:YANG Yuting,CHEN Xiaofang,GUI Weihua, et al. Research on Real-time Forecasting and Evaluation of Tailings Reservoir Based on Multi-Sensor Data Fusion[OL].[28 February 2013] http://en.paper.edu.cn/en_releasepaper/content/4524653 |
9. A Bubble Detection Algorithm Based on Sparse and Redundant Image Processing | |||
TIAN Ye,ZHENG Change,KE Qiuhong | |||
Mine Engineering and Technology 30 January 2013 | |||
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Abstract:Deinked pulp flotation column has been applied in wastepaper recycling. Bubble size in deinked pulp flotation column is very important during the flotation process. In this paper, bubble images of deinked pulp flotation column were first caught by digital camera, and then the bubbles were detected by using a detection algorithm based on sparse and redundant image processing. The results show the algorithms are very practical and effective on bubble detection in deinked pulp flotation column. | |||
TO cite this article:TIAN Ye,ZHENG Change,KE Qiuhong. A Bubble Detection Algorithm Based on Sparse and Redundant Image Processing[OL].[30 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4514502 |
10. Review on Mineral Processing Technology of Rutile in China | |||
WANG Jun,ZHAO Hong-bo,QIN Wen-qing,QIU Guan-zhou,HU Yue-hua,JIANG Tao,ZHANG Lin,ZENG Xiang-long,TANG Yan-bin,WANG Yong | |||
Mine Engineering and Technology 22 January 2013 | |||
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Abstract:Rutile minerals is a kind of very important resources of titanium,its comprehensive exploitation and utilization is always an important and difficult work around the world.The progress of mineral processing of rutile minerals was reviewed in this paper,including the values of titanium, the basic properties of rutile minerals , the crushing process, the mineral processing technologies, the related flotation reagents, the mineral processing equipments,the desliming process and the final purification of concentrates.The key points of research on mineral processing of rutile minerals were summarized. | |||
TO cite this article:WANG Jun,ZHAO Hong-bo,QIN Wen-qing, et al. Review on Mineral Processing Technology of Rutile in China[OL].[22 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4516234 |
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