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water chemistry and ore mineralogy on the galvanic interactions between chalcopyrite and pyrite and steel

Asghar Azizi, Seid Ziaoddin Shafaei, Mohammad Noaparast, Mohammad Karamoozian

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 464-471 doi: 10.1007/s11705-013-1356-z

Abstract: chemistry and ore mineralogy on the galvanic interactions between chalcopyrite and pyrite and low alloy steelAll these factors strongly affect the galvanic current between the minerals and the steel during theIn addition, changing the water in the ball mill from tap to distilled water reduced the galvanic current

Keywords： steel ball     galvanic interaction     pyrite     chalcopyrite     polarization curves    

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characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings by high-energy ball

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 176-181 doi: 10.1007/s11465-011-0220-4

Abstract:

High-energy ball milling is an effective method to produce nanocrystalline oxides.In this study, a conventional ZrO2-7%Y2O3spray powder was ball-milledThe powder was milled both with 100Cr6 steel balls and with ZrO2-3%Y2O3Ball-milling led to lattice microstrains.Milling with the steel balls resulted in finer nano-sized crystal grains, but caused the contamination

Keywords： nanostrucured powders     yttria stabilized zirconia (YSZ)     high-energy ball milling     thermal barrier coatings    

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Augmented hydrogen production by gasification of ball milled polyethylene with Ca(OH)

Giovanni Cagnetta, Kunlun Zhang, Qiwu Zhang, Jun Huang, Gang Yu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1096-5

Abstract:

PE ball milling pretreatment induces higher H2 production

Keywords： Hydrogen production     Gasification     Plastic waste     High energy ball milling    

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Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill

Sandeep PANDA, Nilotpala PRADHAN, Umaballav MOHAPATRA, Sandeep K. PANDA, Swagat S. RATH, Danda S. RAO, Bansi D. NAYAK, Lala B. SUKLA, Barada K. MISHRA

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 281-293 doi: 10.1007/s11783-013-0484-5

Abstract: Bioleaching of a low grade chalcopyrite (ball mill spillage material) was tested for copper recovery

Keywords： ball mill spillage     thermal activation     bioleaching     copper    

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Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 28-36 doi: 10.1007/s11465-008-0007-4

Abstract: This research focuses on the characteristics of how a ball-screw changes its temperature correspondingThe temperature distribution for the ball-screw at different times and directions is shown.By simulating and modeling the temperature field and thermal deformation of the ball-screw under periodicallyvarying heat sources, this paper describes the thermal dynamic characteristics of the ball-screw underBy testing the thermal dynamic characteristics of the ball-screw, the numerical solution is validated

Keywords： numerical solution     temperature corresponding     temperature distribution     end-most     ball-screw    

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Effect of friction coefficients on the dynamic response of gear systems

BALL, Xuejun LI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 397-405 doi: 10.1007/s11465-017-0415-4

Abstract:

The inevitable deterioration of the lubrication conditions in a gearbox in service can change the tribological properties of the meshing teeth. In turn, such changes can significantly affect the dynamic responses and running status of gear systems. This paper investigates such an effect by utilizing virtual prototype technology to model and simulate the dynamics of a wind turbine gearbox system. The change in the lubrication conditions is modeled by the changes in the friction coefficients, thereby indicating that poor lubrication causes not only increased frictional losses but also significant changes in the dynamic responses. These results are further demonstrated by the mean and root mean square values calculated by the simulated responses under different friction coefficients. In addition, the spectrum exhibits significant changes in the first, second, and third harmonics of the meshing components. The findings and simulation method of this study provide theoretical bases for the development of accurate diagnostic techniques.

Keywords： dynamic response     friction coefficient     wind loads     wind turbine gearbox    

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 431-437 doi: 10.1007/s11465-010-0110-1

Abstract: Telescoping double ball bar is used to measure the relative distance between the spindle and the worktableFinally, the value measured by telescoping double ball bar is substituted into the model to obtain kinematic

Keywords： error modeling     error separation     telescoping double ball bar     five-axis numerical control (NC) machining    

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Erratum to: One-step ball milling-prepared nano Fe

Xingguo Guo, Qiuying Wang, Ting Xu, Kajia Wei, Mengxi Yin, Peng Liang, Xia Huang, Xiaoyuan Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1258-5

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Ball milling promoted direct liquefaction of lignocellulosic biomass in supercritical ethanol

Chunyan Yang, Xiaoliang Yuan, Xueting Wang, Kejing Wu, Yingying Liu, Changjun Liu, Houfang Lu, Bin Liang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 605-613 doi: 10.1007/s11705-019-1841-0

Abstract: In the present work, ball milling was applied for the pretreatment of lignocellulose to obtain high conversionBall milling substantially decreased the crystallinity and particle size of lignocellulose, thereby improvingAn increased bio-oil yield of 59.2% was obtained for the ball milled camphorwood sawdust at 300°C, compared

Keywords： ball milling     lignocellulose     supercritical ethanol     liquefaction     bio-oil    

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One-step ball milling-prepared nano Fe

Xingguo Guo, Qiuying Wang, Ting Xu, Kajia Wei, Mengxi Yin, Peng Liang, Xia Huang, Xiaoyuan Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1209-1

Abstract: • Nano Fe2O3 and N-doped graphene was prepared via a one-step ball milling method. • The maximum powerHere, novel Fe-N-doped graphene is successfully synthesized via a one-step in situ ball milling methodPristine graphite, ball milling graphene, N-doped graphene and Fe-N-doped graphene are applied in air

Keywords： Microbial fuel cells     Air cathodes     Nano Fe2O3 and nitrogen-doped graphene     Oxygen reduction reaction    

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An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Engineering 2017, Volume 3, Issue 5,   Pages 641-647 doi: 10.1016/J.ENG.2017.04.007

Abstract:

The ball-screw feed drive has varying high-order dynamic characteristics due to flexibilities of the

Keywords： Ball-screw feed drives     Varying high-order dynamics     Non-collocated control     Modal characteristic modifier    

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Steel Bridges in China

Pan Jiyan

Strategic Study of CAE 2007, Volume 9, Issue 7,   Pages 18-26

Abstract:

This paper contains a brief introduction of the development of the steelIt also introduces the characteristic requiremens of the material used in steel bridges.

Keywords： steel brigde in China     steel materials     design of steel brigde     structure of steel bridge    

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On braced trapezoidal corrugated steel shear panels: An experimental and numerical study

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 396-410 doi: 10.1007/s11709-023-0934-5

Abstract: In this study, a new system consisting of a combination of braces and steel infill panels called thebraced corrugated steel shear panel (BCSSP) is presented.The results obtained from the parametric study indicate that the corrugated steel shear panel (CSSP)

Keywords： trapezoidal corrugated plate     steel shear panel     braced steel shear panel     experimental study     buckling    

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Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 123-129 doi: 10.1007/s11705-013-1325-6

Abstract: An Al O -TiB nanocomposite was successfully synthesized by the high energy ball milling of Al, B O

Keywords： ball milling     nanocomposite     Al2O3     TiB2    

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Progress of Production Technology of Clean Steel at Baosteel

Cui Jian,Zheng Yiyu,Zhu Lixin

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 21-26

Abstract: control technology of carbon, nitrogen, total oxygen, phosphorus, sulphur as well as inclusions in steelThe purity obtained in IF steel and pipeline steel is introduced.

Keywords： Baosteel     clean steel     IF steel     pipe line steel     steelmaking    

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Title Author Date Type Operation

water chemistry and ore mineralogy on the galvanic interactions between chalcopyrite and pyrite and steel

Asghar Azizi, Seid Ziaoddin Shafaei, Mohammad Noaparast, Mohammad Karamoozian

Journal Article

characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings by high-energy ball

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Journal Article

Augmented hydrogen production by gasification of ball milled polyethylene with Ca(OH)

Giovanni Cagnetta, Kunlun Zhang, Qiwu Zhang, Jun Huang, Gang Yu

Journal Article

Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill

Sandeep PANDA, Nilotpala PRADHAN, Umaballav MOHAPATRA, Sandeep K. PANDA, Swagat S. RATH, Danda S. RAO, Bansi D. NAYAK, Lala B. SUKLA, Barada K. MISHRA

Journal Article

Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Journal Article

Effect of friction coefficients on the dynamic response of gear systems

BALL, Xuejun LI

Journal Article

Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Journal Article

Erratum to: One-step ball milling-prepared nano Fe

Xingguo Guo, Qiuying Wang, Ting Xu, Kajia Wei, Mengxi Yin, Peng Liang, Xia Huang, Xiaoyuan Zhang

Journal Article

Ball milling promoted direct liquefaction of lignocellulosic biomass in supercritical ethanol

Chunyan Yang, Xiaoliang Yuan, Xueting Wang, Kejing Wu, Yingying Liu, Changjun Liu, Houfang Lu, Bin Liang

Journal Article

One-step ball milling-prepared nano Fe

Xingguo Guo, Qiuying Wang, Ting Xu, Kajia Wei, Mengxi Yin, Peng Liang, Xia Huang, Xiaoyuan Zhang

Journal Article

An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Journal Article

Steel Bridges in China

Pan Jiyan

Journal Article

On braced trapezoidal corrugated steel shear panels: An experimental and numerical study

Journal Article

Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Journal Article

Progress of Production Technology of Clean Steel at Baosteel

Cui Jian,Zheng Yiyu,Zhu Lixin

Journal Article