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  • Inhibition of acid mine drainage and immobilization of heavy metals from copper flotation tailings using a marble cutting waste 免费阅读 下载全文
  • 有硫酸盐和金属的高集中的酸矿排水(AMD ) 被忍受浪费的硫化物的氧化产生。CaCO 3-rich 大理石切废物是切并且擦亮云石石头生产的剩余材料。在这研究,使用作为一个酸抵销的代理人切废物禁止 AMD 并且从铜筹款跟踪使重金属不能调动的云石的可行性(硫化物 -- 适用的浪费) 被调查。连续激动人心的饮料烧瓶测试被进行因为 40 d,和 pH 价值,硫酸盐内容,和 leachate 满意的溶解金属被分析决定作为酸 neutralizer 切废物的云石的有效性的每 10 d。为比较, CaCO 3 也被用作一个抵销的代理人。leachate 的平均 pH 价值在实验的开始是 2.1 (t = 0 ) 。在采用切废物的云石的实验,分别地,从 6.5 ~ 7.8 改变的 leachate 的 pH 价值,和硫酸盐和铁集中在 40 d 以后从 4558 ~ 838 mg/L 并且从 536 ~ 0.01 mg/L 减少了。切的废物也从 AMD 多于重金属(Cd, Cr, Cu, Ni, Pb,和 Zn ) 的 80wt% 移开的云石由铜筹款跟踪产生了。
  • Semi-industrial experimental study on bauxite separation using a cell-column integration process 免费阅读 下载全文
  • The cyclonic-static micro-bubble flotation column(FCSMC) is a highly efficient mineral processing equipment. In this study, a cell-column(FCSMC) integration process was investigated for the separation of bauxite and its feasibility was analyzed on a theoretical basis. The properties of low-grade bauxite ore from Henan Province, China were analyzed. Parameters such as reagent dosage, scraping bubble time, and pressure of the circulating pump during the sorting process were investigated and optimized to improve the flotation efficiency. On the basis of these parameters, continuous separation experiments were conducted. Bauxite concentrate with an aluminum-to-silicon(A/S) mass ratio of 6.37 and a 77.63wt% recovery rate were achieved via a flow sheet consisting of "fast flotation using a flotation cell, one roughing flotation and one cleaning flotation using flotation columns". Compared with the full-flotation-cells process, the cell?column integration process resulted in an increase of the A/S ratio by 0.41 and the recovery rate by 17.58wt%. Cell?column integration separation technology represents a new approach for the separation of middle-to-low-grade bauxite ore.
  • Formation mechanism of the graphite-rich protective layer in blast furnace hearths 免费阅读 下载全文
  • 强风炉子的长运动生活重重地在他们的炉床被连接到保护的层的存在。在这个工作,我们进行了解剖研究并且在强风炉子炉床调查了损坏估计保护的层的形成机制。结果说明那石墨阶段的重要数量在炉床以内被套住保护的层。根据石墨降水过程的热力学、运动的计算,而且,与充满石墨的保护的层的形成有关的一个降水潜力索引被建议描绘这层的形成能力。我们决定在正常操作条件下面,从热金属的石墨阶段的降水是热力学地可能的。在在热金属存在的元素之中, C, Si,和 P 赞成石墨降水,而 Mn 和 Cr 禁止这个过程。而且在一样的热脸的温度,在热金属的碳集中的增加能弄短降水时间。最后,结果建议象减少热脸的温度并且在热金属增加碳浸透的度那样的措施是极其重要的改进降水潜力索引。
  • Effect of MgO content in sinter on the softening-melting behavior of mixed burden made from chromium-bearing vanadium-titanium magnetite 免费阅读 下载全文
  • The effect of sinter with different MgO contents on the softening–melting behavior of mixed burden made from chromium-bearing vanadium–titanium magnetite was investigated. The results show that with increasing MgO content in the sinter, the softening interval and melting interval increased and the location of the cohesive zone shifted downward slightly and became moderately thicker. The softening–melting characteristic value was less pronounced when the MgO content in the sinter was 2.98wt%–3.40wt%. Increasing MgO content in the sinter reduced the content and recovery of V and Cr in the dripped iron. In addition, greater MgO contents in the sinter resulted in the generation of greater amounts of high-melting-point components, which adversely affected the permeability of the mixed burden. When the softening–melting behavior of the mixed burden and the recovery of valuable elements were taken into account, proper MgO contents in the sinter and slag ranged from 2.98wt% to 3.40wt% and from 11.46wt% to 12.72wt%, respectively, for the smelting of burden made from chromium-bearing vanadium–titanium magnetite in a blast furnace.
  • Experimental study on sulfur removal from ladle furnace refining slag in hot state by blowin~ Air 免费阅读 下载全文
  • Property enhancement of cast iron used for nuclear casks 免费阅读 下载全文
  • 可锻的铁(DI ) 是为使用在的比较喜欢的材料各种各样结构,汽车,并且因为它力量,坚韧,和韧性的优秀联合,设计领域。在当前的调查,我们阐明在 DI 的词法、机械的性质之间的关系在原子工业在安全应用为使用打算了。有各种各样的 alloying 元素的 DI 标本受到退火和 austempering 热处理过程。更快的冷却率看起来在 austempered 标本增加小瘤计数,补偿他们的 nodularity 价值并且随后减少他们的韧性和影响力量。退火的标本的韧性和冲击能价值与增加铁酸盐区域部分和 nodularity 增加了,而 Ni 和 Cr 的数量的增加经由稳固的答案加强导致了坚硬的增加。Austempered 标本被观察比退火的标本强壮、以一个河模式描绘的一种有点易碎的方式失败,而可锻的失败模式被酒窝的存在描绘。
  • Effects of simulated on-fire processing conditions on the microstructure and mechanical performance of Q345R steel 免费阅读 下载全文
  • 在 Q345R 钢盘子上处理实验的一系列模仿的在火上被进行,并且盘子 Brinell 坚硬,张力的力量,和冲击能被测试。微观结构形态学系统地与在它的表演上调查钢微观结构的效果的目的用一台扫描电子显微镜被分析。所有检验性能参数在 700 獮漠 ? 桴 ? 業牣獯牴 ' 壮肭勉硴硾炭鷳 T? 数晲牯慭据 ? 景儠 ?刵猠整汥 附近在在温度对待热的样品的情况中展出了实质的减少
  • Effects of normal stress, surface roughness, and initial grain size on the microstructure of copper subjected to platen friction sliding deformation 免费阅读 下载全文
  • 应用正常应力,表面粗糙,和纯 Cu 的微观结构上的起始的谷物尺寸的效果在滑动处理的变丑(PFSD ) 的压盘磨擦期间发展了被调查。在每种情况中,变丑微观结构被描绘,对待的表面层的坚硬被测量评估它的力量。结果显示在任何深度的使变形的层和坚硬的厚度与增加正常应力增加了。更小的钢压盘表面粗糙导致了更少的微结构精炼,而微结构精炼被减少提高 Cu 样品的表面粗糙。在一种很大的起始的谷物尺寸的情况中(d > 10 公里) ,到 undeformed 材料的从好谷物的微观结构的更锋利的转变在 PFSD 处理以后在对待的表面层被获得。
  • Effects of HNO3 concentration on the pit morphologies of aluminum foil etched in HNO3-HCl and HNO3-H2SO4-HCl solutions 免费阅读 下载全文
  • In this work,the effects of HNO3 concentration on the pit morphologies of high-cubic-texture aluminum foil etched in HNO3-HCl and HNO3-H2SO4-HCl solutions were investigated.When the aluminum foil was etched in HNO3-HCl solutions,the morphologies of pits transformed from irregular tunnels to typical tunnels(as inverted pyramids) and shallow cuboids as the HNO3 concentration in the etchant solution was increased.However,as the HCl concentration in the etchant solution was increased,the morphologies of pits transformed from shallow cuboids to typical tunnels(as inverted pyramids) and irregular tunnels.When the aluminum foil was etched in n N HNO3-(7.2-n) N H2SO4-0.8 N HCl solutions,the morphologies of the pits transformed from typical tunnels(i.e.,the number of sub-tunnels formed on the main tunnels increased) to irregular tunnels(corrugated tunnels and polyline tunnels) as the HNO3 concentration in the etchant solution was increased.These effects are attributed primarily to corrosion on the(100) and(010) faces of pits being accelerated and to the(001) faces being prone to passivation to different degrees when various concentrations of HNO3 are added to the etchant solutions.
  • Microstructure, thermal properties, and corrosion behaviors of FeSiBAlNi alloy fabricated by mechanical alloying and spark plasma sintering 免费阅读 下载全文
  • An equiatomic FeS iB AlN i amorphous high-entropy alloy(HEA) was fabricated by mechanical alloying(MA). A fully amorphous phase was obtained in the FeS iB AlN i HEA after 240 h of MA. The bulk FeS iB AlN i samples were sintered by spark plasma sintering(SPS) at 520 and 1080°C under a pressure of 80 MPa. The sample sintered at 520°C exhibited an amorphous composite structure comprising solid-solution phases(body-centered cubic(bcc) and face-centered cubic(fcc) phases). When the as-milled amorphous HEA was consolidated at 1080°C, another fcc phase appeared and the amorphous phase disappeared. The sample sintered by SPS at 1080°C exhibited a slightly higher melting temperature compared with those of the as-milled alloy and the bulk sample sintered at 520°C. The corrosion behaviors of the as-sintered samples were investigated by potentiodynamic polarization measurements and immersion tests in seawater solution. The results showed that the HEA obtained by SPS at 1080°C exhibited better corrosion resistance than that obtained by SPS at 520°C.
  • Hot deformation behavior of uniform fine-grained GH4720Li alloy based on its processing map 免费阅读 下载全文
  • 一致有细密纹理的 GH4720Li 合金的热变丑行为从 1040 在温度范围被学习到 1130S ) 在 520 和 1080 汃猠汯瑵潩獮 ? 桴 ? 潭灲潨潬楧獥漠 ? 桴 ? 楰獴琠慲獮潦浲摥映潲 ? 祴楰慣? 畴湮汥? 椨攮 ? 琠敨渠浵敢 ? 景猠'T 琭湵敮獬映牯敭 ? 湯琠敨洠楡? 畴湮汥? 湩牣慥敳 ? 琠? 物敲畧慬? 畴湮汥? 挨牯畲慧整 ? 畴湮汥? 湡 ? 潰祬楬敮琠湵敮獬 ? 獡琠敨 ? 低猼'T?? ?? 挠湯散瑮慲楴湯椠 ? 桴 ? 瑥档湡 ? 潳畬楴湯眠獡椠据敲獡摥吗?
  • Porous a-Al2O3 thermal barrier coatings with dispersed Pt particles prepared by cathode plasma electrolytic deposition 免费阅读 下载全文
  • 多孔的 -Al2O3 包含驱散的磅粒子的热障碍涂层(TBC ) 被阴极血浆准备电解免职(CPED ) 。涂层和 CPED 过程的微观结构上的磅粒子的影响被学习。准备涂层主要由 -Al2O3 组成。涂层的平均厚度是约 100 m。如此的单个层的 TBC 展出了不仅优秀高温度的周期的氧化和分裂抵抗,而且好热屏蔽性质。因为他们的极其低的氧散开率,多孔的 -Al2O3 TBC 禁止合金底层的进一步的氧化,因为他们的多孔的结构,提供好热屏蔽,并且展出因为磅粒子的韧化的效果并且因为多孔的结构的变丑导致的压力松驰的优秀机械性质。
  • Structural, morphological, Raman, optical, magnetic, and antibacterial characteristics of CeO2 nanostructures 免费阅读 下载全文
  • 在这研究, CeO 2 nanostructures 被一个软化学方法综合。一个热水的处理被遵守导致 nanoparticles 的有趣的词法转变进与 40 nm 的平均厚度由 nanosheets 组成的同类的 microspheres。结构的分析为两件样品揭示了 CeO 2 的单相的立方的荧石结构的形成。拉曼分光镜的学习证实 XRD 结果并且而且在 nanosheets 显示了很多氧空缺的存在。这些氧空缺与提高的磁性的特征导致了 CeO 2 nanosheets 的房间温度强磁性(RTFM ) 。惊人地, nanosheets 比 nanoparticles 展出了实质地更大的抗菌剂活动。这项更大的抗菌剂活动被归因于 high-surface-energy 的更大的暴露极的表面并且到氧空缺的存在。
  • Synthesis of crystalline perovskite-structured SrTiO3 nanoparticles using an alkali hydrothermal process 免费阅读 下载全文
  • 我们为综合报导一条试验性的线路组织 perovskite 的锶 titanate (用碱的 SrTiO 3) nanocubes 在没有进一步的加热的低温度的热水的过程。而且,我们学习了加热时间的影响(在 180 敧渠浵敢 ? 景漠祸敧 ? 慶慣据敩 ?湩琠敨渠湡獯敨瑥 s
  • Instructions for Authors 免费阅读 下载全文
  • Inhibition of acid mine drainage and immobilization of heavy metals from copper flotation tailings using a marble cutting waste(Gulsen Tozsin)
    Semi-industrial experimental study on bauxite separation using a cell-column integration process(Ning-ning Zhang[1,2] Chang-chun Zhou[1,2] Long-fei Cong[1,2] Wen-long Cao[1,2] You Zhou[1,2])
    Formation mechanism of the graphite-rich protective layer in blast furnace hearths(Ke-xin Jiao[1,2];Jian-liang Zhang[1,2];Zheng-jian Liu[1,2];Feng Liu[1,2];Li-sheng Liang)
    Effect of MgO content in sinter on the softening-melting behavior of mixed burden made from chromium-bearing vanadium-titanium magnetite(Zheng-gen Liu Man-sheng Chu Hong-tao Wang Wei Zhao Xiang-xin Xue)
    Experimental study on sulfur removal from ladle furnace refining slag in hot state by blowin~ Air(Li-huaZhao;Lu Lin;Qi-fan Wu)
    Property enhancement of cast iron used for nuclear casks(R.K. Behera;B.P. Mahto;J.S. Dubey;S.C. Mishra;S. Sen)
    Effects of simulated on-fire processing conditions on the microstructure and mechanical performance of Q345R steel(Yi-chao Peng;Hao-hao Xu;Mai-cang Zhang)
    Effects of normal stress, surface roughness, and initial grain size on the microstructure of copper subjected to platen friction sliding deformation(Shan-quan Deng Andrew- William Godfrey Wei Liu Cheng-lu Zhang Ben Xu)
    Effects of HNO3 concentration on the pit morphologies of aluminum foil etched in HNO3-HCl and HNO3-H2SO4-HCl solutions(Quan-xiu Yi;Ye-dong He;Ning Peng[1,2];Hong-zhou Song;Xiao-fei Yang;Xiao-yu Cai)
    Microstructure, thermal properties, and corrosion behaviors of FeSiBAlNi alloy fabricated by mechanical alloying and spark plasma sintering(Hong-lei Wang[1,2];Tai-xiu Gao;Jia-zheng Niu;Pei-jian Shi;Jing Xu;Yan Wang[1,2])
    Hot deformation behavior of uniform fine-grained GH4720Li alloy based on its processing map(Qiu-ying Yu[1,2];Zhi-hao Yao;Jian-xin Dong)
    Porous a-Al2O3 thermal barrier coatings with dispersed Pt particles prepared by cathode plasma electrolytic deposition(Peng Wang Ye-dong He Shun-jie Deng Jin Zhang)
    Structural, morphological, Raman, optical, magnetic, and antibacterial characteristics of CeO2 nanostructures(Fazal Abbas;Javed lqbal;Tariq Jan;Noor Badshah;Qaisar Mansoor;Muhammad Ismail)
    Synthesis of crystalline perovskite-structured SrTiO3 nanoparticles using an alkali hydrothermal process(U.K.N. Din T.H.T. Aziz M.M. Salleh A.A. Umar)
    Instructions for Authors
    《矿物冶金与材料学报:英文版》封面

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