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. Generally, ligands selected under conditionⅠwere easier for complex-leaching valuable metals than that under condition Ⅱ, however, under condition Ⅲ, ligands selected were hard to complex-leaching.... In primary selection, ligands selected under conditionⅠare more easily for complex-leaching valuable metals than that under condition Ⅱ, and ligands selected under condition Ⅲ are hard to complex-leach......
of hard water on selective flocculation of diasporic bauxite was tested and the measures were taken to eliminate the effects of Ca2+ and Mg2+ in hard water. The results indicated that, not only the concentration of electrolyte ions but also the ionic valence of the electrolyte ions affects the settling behavior of kaolinite; hard water significantly affects its selective flocculation owing to Ca2......
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J. Cent. South Univ. (2018) 25: 1665-1677 DOI: https://doi.org/10.1007/s11771-018-3858-9 A nonlinear rheological damage model of hard rock HU Bo(胡波)1, YANG Sheng-qi(杨圣奇)1, 2, XU Peng(徐鹏)1 1.State... elastic-visco-plastic rheological model is presented to characterize the time-based deformational behavior of hard rock. Specifically, a spring element is used to describe reversible instantaneous......
Atomic simulation on evolution of nano-crystallizaion in amorphous metals WANG Yu(王 宇), WANG Xiu-xi(王秀喜), WANG Hai-long(王海龙) Key Laboratory of Mechanical Behavior and Design of Materials... amorphous Ni-Pd alloys and the temperature effect on the nano-crystallization behavior in amorphous metals were studied. The results show that the small nano-crystalline grain will nucleate and grow......
J. Cent. South Univ. (2016) 23: 3256-3261 DOI: 10.1007/s11771-016-3391-7 Coupled effects of stress damage and drilling fluid on strength of hard brittle shale WANG Wei(汪伟), DENG Jin-gen(邓金根), YU Bao... University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: During well drilling process, original stress state of hard brittle shale will be changed due to stress redistribution......
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amount of Cd is the minimum in simultaneous competitive adsorption experiment. As heavy metals are added into red soils sequentially, the heavy metal adsorptions are relatively hard to reach equilibrium...Kinetics comparison on simultaneous and sequential competitive adsorption of heavy metals in red soilsWANG Yan(王艳)1, 2, LI Zhong-wu(李忠武)1, 2, HUANG Bin(黄斌)1, 2, JIANG Wei-guo(蒋卫国)3, GUO Liang(郭亮)1......
J. Cent. South Univ. (2021) 28: 454-480 DOI: https://doi.org/10.1007/s11771-021-4615-z TBM tunneling in extremely hard and abrasive rocks:Problems, solutions and assisting methods ZHENG Yan-long(郑彦... University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract: Extremely hard and abrasive rocks pose great challenges to the past and ongoing TBM projects by increasing cutter......
Crystal structure and hard magnetic properties of TbCu7-type Sm0.98Fe9.02–xGax nitrides权宁涛,张世荣,于敦波,李扩社,罗阳,靳金玲,张坤,刘宇超,李红卫National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals,Grirem Advanced Materials Co., Ltd.摘 要:The compound Sm0.98Fe9.02–xGaxNδ(x=0, 0.25, 0.5, 0.75, 1) were prepared by melt-spun......
