简介：分析了3S技术的特点,考虑矿区的具体情况和要求,探讨了3S技术应用于矿区工程的可行性和应用目标.

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简介：通过12万m3高炉煤气柜的改造，稳定了煤气管网系统压力，减少了煤气放散，消除了环境污染，保证了煤气系统安全运行，取得了良好的经济和社会效益。

简介：ThesurfaceofacommercialY3Al5O12:Ce3+phosphorwasmodifiedby99%NH4F+CH3COOHsolutioninasupersonicbathwithwatertemperatureof80oCfor4h.Thescanningelectronmicroscopy（SEM）resultsshowedthattheedgeangleswerenotassharpastheunmodifiedparticlesandtheflatsurfacesturnedroughwithmanymicro-structurescovered.Positronlifetimemeasurementsquantitativelyshowedthatsurfacedefectswereremovedawaybymorethan50%.Asaresult,thephotoluminescencedeterminationsshowedthatthebackscatterlosswasreducedby4.2%andtheemissionpowerwasenhancedby5.6%afterthesurfacemodification.Theconversionefficiencywasgreatlyimprovedfrom47.3%to51.1%,aspresentedbythefluorescenceimages.Therefore,itwouldbegreatlyhelpfulfortheimprovementofefficiency,transparencyandstabilityofpc-LED.Moreover,thismethodwassignificantlysuitableformassproductionduetoitseasyoperationandlowcost.

简介：AdetailedstudyofthefluorescenceemissionpropertiesandenergytransfermechanisminEr3+/Tm3+co-dopedleadsilicateglasseswasreported.Enhancednearinfrared1.8μmandvisibleup-conversionemissionswereinvestigatedunder808and980nmexcitations,respectively.TheenergytransfermechanismbetweenEr3+andTm3+wasanalyzedaccordingtotheabsorptionspectra,theemissionspectraandthelevelstructuresofEr3+andTm3+.TheenergytransferefficiencybetweenEr3+andTm3+reached68.1%intheEr3+/Tm3+co-dopedleadsilicateglasseswhenpumpedby808nmlaserdiode.Basedontheabsorptionspectra,theJudd-Ofeltparameters,spontaneousemissionprobability,absorptionandemissioncrosssections,gaincoefficientswerecalculatedandanalyzed.Itwasfoundthatthecalculatedemissioncrosssectionandthemaximumgaincoefficientaround1.8μmwere4.9×10–21cm2and1.12cm–1,respectively.TheseresultsindicatedthattheEr3+/Tm3+co-dopedlead-silicateglasseshadpotentialapplicationinnearinfraredlasers.

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简介：Thesinglecrystalofthecomplex[Sc（NO3）3（H2O）2]·（15C5）hasbeenpreparedinacetonitrile.Thenewcomplexhasbeencharacterizedbyelementalanalysis,IRspectra,solubilityandmolarconductancemeasurements.ThestructureofthecomplexisdeterminedbysinglecrystalX-raydiffractionanalysis.

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简介：(Ba0.66Sr0.33)Mg0.8Al11.47O19:Tm0.013+(BSMA:Tm3+)phosphorwassynthesizedbysolid-statereactions.ThesamplewascharacterizedbyX-raydiffraction(XRD),scanningelectronicmicroscope(SEM),vacuumultraviolet(VUV)spectra,ultraviolet(UV)spectraandFT-IRspectrum.XRDpatternrevealsthatBSMA:Tm3+hasthesamestructureasBaAl12O19phase.SEMimageillustratesthatthephosphorhasthehexagonalshapeanddeepslicestructure.VUVandUVemissionspectraat20,50and100Kshowthatthelowtemperatureluminescenceintensitiesbecomeweakgraduallywiththeincreasingofthetemperatureunder147and254nmexcitation.Thestrongbroadbandpeaksataround357and397nmandthepeakat516nmunder147nmexcitationallcorrespondtothecharacteristictransitionsofTm3+ions.However,underUV(254nm)excitation,themainpeakbecomes530nmwhichhasveryhighlineintensity,andthepeaksatabout362and403nmareveryweak.Theexcitationspectrumat20Kshowsthattherearethreeabsorptionpeaksataround153,186and193nmwhen516nmemissionismonitored.Theabsorptionpeaksof[AlO4],[AlO6]andAl-OcanbeobservedinFT-IRspectrum.

简介：近年来通过提高操作技术,380m3高炉生产技术经济指标进步明显,利用系数由2.85t/m3·d上升到3.2t/m3·d左右,焦比由原来410kg/tFe降到360kg/tFe,经济效益显著。

简介：根据南钢已有两套外压缩2万制氧机的现状，对内、外压缩制氧机的流程进行分析、比较，从空分安全性、设备投资、效益以及变负荷生产能力等多个方面进行比较，确定选择再上2万制氧机的型号。

简介：近日德意志央行官网新闻通稿称从2013年底起，截止2016年末，其从美国纽约和法国巴黎将属于德国的583吨黄金运回法兰克福。如此大规模运回黄金储备，使得德国提前完成了原定2020年实现的储备目标。德国人从海外搬回家的这些黄金储备，说起来还有漫长心酸的历史。二战之前，为了防止苏联入侵本土，德国提前把自己的部分黄金储备运往海外储藏。进入冷战时代，东西德分裂，德国98％的黄金储备都存储在英美等远离欧洲前线的地方，确保安全。

简介：介绍了本钢3号高炉电动开口机在长期使用中存在的问题以及改造为气动开口机后取得的显著效果。

简介：新建的2×1800^3高炉开炉分为三个阶段，第一阶段开炉准备，包括各种原燃料及培训学习准备、做好各种预案；第二阶段做好高炉开炉料的理论配料计算及加料要求；第三阶段点火开炉，包括点火初始风口配置及第一炉出铁要求等。通过精心准备，两座高炉均实现快速开炉达产。

简介：通过对攀钢冷轧厂酸洗3号纠偏装置跑偏原因的分析和对纠偏角度的计算，提出了可行的改进方案，完全消除了跑偏现象，取得了圆满成功。

简介：阐述2500m^3高炉在限产的情况下，采取相关措施：下部采取缩小面积来改变送风制度，上部通过调整装料制度，提高顺行度和煤气利用率，达到“低产低耗”的生产目标。通过对高炉操作参数的调整，低强度冶炼取得了成功。

简介：对KDON-35000/40600型制氧机组经济运行作了阐述,提高有效能的利用率,降低氧气放散率,从而实现降本增效。

简介：SphericalYAG:Ce3+phosphorparticleswithnarrowsizedistributionwerepreparedbyspraypyrolysis.Theeffectsoftheconcentrationofsolution,theflowrateofcarriergasandtheannealingtemperatureonthephosphormorphologywerestudied.Theproductivityofprecursorparticlesshowsatrendofdropafterrisingwiththeincreaseofconcentration.Raisingtheflowrateofnitrogencanimprovetheproductivityoftheprecursorparticles.Phosphorpreparedbyspraypyrolysishasobviouslyhigheremissionintensitythanthatsynthesizedbysolidstatereaction,spraypyrolysismakesCe3+ionswelldistributedinthecrystallatticeastheluminescentcenters,andphosphorparticleshaveregularsphericityandnarrowsizedistribution.

简介：鉴于空料线停炉在国内得到广泛应用，南钢2000m^3高炉选择使用空料线方法停炉。介绍空料面前炉况的处理及准备，阐述空料面操作要点。此次停炉为南钢在大高炉停炉方法上积累了宝贵的经验。

简介：新区3200m3高炉喷煤系统采用中速磨负压制粉,一级高浓度低压脉冲长袋式收粉器收粉。喷吹系统采用双系列双罐并列单管路加分配器浓相输送工艺。喷煤系统按烟煤和无烟煤混喷设计,制粉系统按强爆炸性烟煤设计,最大喷煤比250kg/t,尾气排放煤粉质量浓度≤30mg/m3,喷煤系统投运后,运行正常,烟煤配比达40%,高炉喷吹效果良好。