硬岩松动爆破加综掘机下山联合掘进

1概述丰龙矿业有限责任公司丰龙矿井设计生产能力为0.9Mt/a。矿井采用立井开拓方式,共有5个井筒,工业广场内布置主立井与副立井,在南、北翼布置南翼进、回风立井井筒及北翼西回风立井井筒。共划分二个水平,其中一水平为-900m,二水平为-1100m。井筒落底后从-900m水平向北施工北翼上仓胶带斜巷,按-16°下山施工,在掘进过程中巷道要穿过侏罗系下统门口山组、三叠系下统大冶组,距离472m,岩石富含石英,节理不发育,经湖南勘测设计院试验检测中心化验,岩石     

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活性炭广泛应用于物质的吸附分离和净化，用木材果壳及优质煤生产活性炭，存在着原料来源少，成本高等问题；煤油厂重质油资源丰富，分布广，价格低，由它制得的石油焦炭含量比木材和煤高得多，用其制造的活性炭收率高，比表面积大，而且石油焦的灰分，挥发份低，生产的活笥炭杂质含量少，因此开发炭原料来源，对我国活性炭工业的发展和技术进步具有重大经济和社会效益。以炼油厂石油焦为原料，选择ＫＯＨ为活化剂，添加其它助剂（水     

纳米银线/石墨烯复合材料对导电胶的性能影响研究

本文采用一步溶剂热法合成了纳米银线-石墨烯复合材料,通过X射线衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外可见光吸收（UV-Vis）对合成的复合材料进行结构及形貌的表征,并将复合材料与微米片状银粉、环氧树脂基体掺杂制备导电胶,在150 ℃下固化2 h后,对导电胶进行了导电性能和热稳定性能测试。结果表明：纳米银线-石墨烯复合材料会改善导电胶的导电性能,当在基体树脂中添加0.9 wt%的复合材料后,导电胶的体积电阻率达到最低值4.34 ? 10-4 Ω?cm,而且导电胶仍然保持着良好的热稳定性能。     

纳米银线-石墨烯复合物对导电胶性能的影响

以氧化石墨烯、硝酸银和乙二醇为原料,采用一步溶剂热法合成了纳米银线-石墨烯复合物,通过FTIR、XRD、SEM、TEM和UV-Vis对合成的复合物进行了结构及形貌的表征,并将复合物应用于导电胶中,考察了其导电性能和热稳定性能。结果表明:该复合物可改善导电胶的导电性,且不会减弱其热稳定性。当复合物的质量分数达到0.9%时,导电胶的体积电阻率低至4.34×10–4?·cm,与空白样相比降低了79%;而且导电胶的热分解温度约为350℃,和纯环氧树脂的热分解温度相近。     

掺杂的阳离子缺陷型磷灰石 La9.33－2x/3MxSi6O26 (M=Mg,Sr,Ca)的合成及离子导电特性

Apatite-type lanthanum silicate with special conduction mechanism via interstitial oxygen has attracted considerable interest in recent years. In this work, pure powder of La9.33－2x/3MxSi6O26 (M＝Mg, Ca, Sr) is prepared by the sol-gel method with sintering at 1000°C. The powder is characterized by X-ray diffraction (XRD) and scan-ning electron micrograph (SEM). The apatite can be obtained at relatively low temperature as compared to the con-ventional solid-state reaction method. The measurements of conductivity of a series of doped samples La9.33－2x/3MxSi6O26 (M＝Ca, Mg, Sr) indicate that the type of dopant and the amount have a significant effect on the conductivity. The greatest decrease in conductivity is observed for Mg doping, following the Ca and the Sr doped apatites. The effect is ultimately attributed to the amount of oxygen interstitials, which is affected by the crystal lat-tice distortion arising from cation vacancies.     

电镀污泥多金属资源化利用研究

针对含铬电镀污泥开展多金属资源化利用工艺研究。结果表明,电镀污泥采用硫酸浸出,Lix984N萃取铜,沉淀剂沉铬,氧化沉铁,硫化钠沉锌,碳酸钠沉镍,在优化试验条件下,铜、镍、锌和铬回收率均大于96%。     

掺锆纳米TiO2制备表征及其对光催化活性的影响

本文采用溶胶-凝胶法制备纳米二氧化钛和掺锆二氧化钛粉末.TGA表征分析发现掺锆后二氧化钛吸附水量增加.SEM和BET表征显示掺锆粒子半径减小,比表面积增加.XRD分析发现掺锆后的衍射峰宽化,晶粒变小,与SEM和BET结果吻合,还发现掺锆抑制了二氧化钛晶相转变.光催化降解亚甲基蓝结果表明,当锆掺杂浓度在5%,焙烧温度530℃时,掺锆二氧化钛催化活性最高.     

A型分子筛支撑膜的研究进展

简述了国内外A型分子筛支撑膜的发展概况及近年来A型分子筛支撑膜的制备技术进展,简要介绍了原位水热合成法、二次生长法、微波加热合成法及蒸汽相转移法;重点讨论了采用不同形状支撑体(如片状、管状和中空纤维多孔支撑体等)制备A型分子筛支撑膜的研究状况,着重探讨了α-Al2O3中空纤维支撑A型分子筛膜的特点和优势,并对其具体应用和工业化前景做了简要述评和展望。     

氧基电解质La_(10-x)V_x(SiO_4)_6O_(3+x)的制备及性能测试(英文)

Apatite-lanthanum silicate has attracted considerable interest in recent years due to its high oxide ion conductivity.In this paper,V-doped samples La10-xVx(SiO4) 6O3+x(0≤x≤1.5) were prepared by sol-gel method and the influences of V-dopant content on calcining temperature and conductivity were reported.The samples were characterized by thermal analysis(TG-DSC) ,X-ray diffraction(XRD) and scanning electron micrograph(SEM) . The apatite was obtained at 800°C,a relatively low temperature in comparison to 1500°C with the conventional solid-state method.The ceramic pellets sintered at 1200°C for 5 h showed a higher relative density than La9.33Si6O26 pellets sintered at 1400°C for 20 h.The conductivities of samples were measured by electrochemical impedance spectroscopy.The conductivity was improved with the increase of V-dopant content on La site.