简介：本文研究了矿浆pH值对浮选精矿品位、回收率、综合尾矿品位以及浮选泡沫量大小和泡沫粘度的影响。试验结果发现，pH值控制在8．7-9．0范围内，可获得铁品位相对较高的铁精矿，且回收率较高，粗尾品位低。适当提高pH值可减少泡沫量，降低泡沫粘度，有利于后续扫选流程顺行。

简介：Baosteeldevelopedadigitalautomaticanalysistechniqueformaceralspecificationin2002.Thisanalysissystemcombinesdigitalimageprocessing,graphics,databases,expertsystems,artificialintelligenceandotheradvancedtechnologies.After6yearsofapplicationincokeproduction,thesystemproveditselfsuccessfulincoalqualitytestingandcoalblendingguidanceonmaceral.However,duringthislongprocess,someinadequacieswerefoundthatimpactedtheprecisionandaccuracyoftheanalysis.So,in2008Baosteelbegantoworkonimprovingthecoalmaceralanalysissystem.Theimprovementsincludedthefollowing:furtherupgradingandenhancingtheanalysisperformanceofmicroscopicimages;extendingthegraylevelstoincreasethereflectancemeasurementaccuracy64times;changingthefocusmethodandeffectivelyeliminatingtheinterferenceofhalo.Inaddition,animprovedimagerecognitionmethodwasadoptedtomaketheextractionofvitrinitemoreaccurateandanewmodelofcoalconstituentalgorithmwasaddedwhichcanaccuratelydeterminethecompositionofmaceral(exinite,vitrinite,inertinite).Sincetheseimprovementswerecompleted,thesystemhasachievedhigherautomation,speedandaccuracy,collectedmoreinformationandperformedmoreaccuratemaceralanalysisforcokeproduction.Meanwhile,theimprovedsystemhasprovidedareliableanalyticalbasisforthefurtherstudyontherelationshipbetweencokequalityandcoalblending.

简介：根据西沟矿露天采场穿孔的实际情况。对我矿所使用的KY-200B牙轮钻的钻杆从材质、转速、轴压方面进行改进，改进后的钻杆使用寿命延长一倍左右。我矿现有穿孔设备有：KQX-150潜孔钻2台、KQ-200潜孔钻、KY-200B牙轮钻2台，从而降低了钻孔的成本。

简介：ThispaperintroducedtheresearchbackgroundandtechnicalfeaturesofBaosteel’ssinteringfluegasdesulfurization(FGD).Itwasalsonamedswirl-jet-absorbingwetlimestone-gypsumsinteringFGDtechnology.Bymeansofindustrialonlinepilotplants,throughcontinuousrunningandorthogonaltests,theeffectsofvariousinfluencingfactorsonSO2removalefficiencyofBaosteelsinteringfluegasdesulgurization(BSFGD)werestudiedcarefully.TheresultsindicatethattheslurrypHvalue,temperature(T)andflowrate(Q)ofinletfluegas,liquidlevel(H)intheabsorberandfluegasjetvelocity(V)arethemaininfluencingfactors.Furthermore,whenpHisbetween5.0and5.5,Hisbetween4.2mand4.3m,Qis43000m3/h,Tisbelow65℃andVisbetween20m/sand28m/s,thebestdesulfurizationefficiencycanbeavailable.

简介：当今世界企业之间充满竞争，企业要生存和发展，必须不断地努力提高自身产品的竞争力。6s管理作为一种行之有效的企业管理方法，正被越来越多的企业采纳。通过6s管理可以不断提高企业综合管理水平，树立企业形象和品牌。本文介绍中厚板卷厂根据生产现场实际情况，有效推行并实施6s管理，分析6s管理对企业管理的重要性。

简介：TheCOREXprocessisauniqueindustrializedsmeltingreductiontechnologyforiron-makingpresentlyintheworld.Oneofitsstrikingcharacteristicsisitsabilitytodirectlyutilizelumpcoalasitsmainfuel.Therefore,theCOREXprocessuseslittle,ornocokeatall.TherequirementsonlumpcoalfortheCOREXprocessweregiveninthispaper.Inordertoreducethecokeconsumptionandgiveplaytotheadvantagesofdirectlyusinglumpcoal,theappropriateratioofcoketolumpcoalneedstobedetermined.Thispaperalsosummerizedseveraladvancedmethodsofusingpowderedcoalgeneratedbythetransporting,loadingandunloadingoflumpcoal.InordertosolvethelackofcoaltypesforCOREXandobservethecrackinganddevolatilizationactionoflumpcoalinthemelter-gasifier,anexperimentaldeviceandanewmethodwereproposedtotestthecrackinganddevolatilizationcharacteristicsoflumpcoal.Bymeansofthenewmethod,thedevolatilizationandcrackingbehaviorsoflumpcoalcanbeinvestigated,whichishelpfultotheselectionoflumpcoalfortheCOREXprocess.

简介：介绍ER70S-6X焊丝钢的生产情况。通过化学成分及残余元素控制、精炼脱氧制度优化、连铸保护浇注和铸温铸速的稳定控制等工艺措施的实施，使EK70S－6X焊丝钢的产品质量和综合性能得到了稳定提升。

简介：对中温压力容器用钢板Q370R的力学性能及焊后热模拟性能进行了试验,通过统计分析试验数据,表明该钢板具有优良的低温韧性和优良的焊接性能,能用于制造中温压力容器。

简介：本文针对采用西门子SINAMICSG／S系列变频调速装置的应用场合，引入了一个变频器与所驱动电机之闻允许最大电缆长度的计算公式。通过对不同负栽方式。不同电缆型号及横截面积。不同输出电抗器配置等具体情况的区别分析，利用此公式推导计算出允许电机电缆长度，并以之指导工程设计中的相关内容。

简介：简单介绍了牙轮钻钻机起落装置的液压原理，并阐述了平衡阀的作用。针对牙轮钻钻机起落装置的平衡阀应用提出了设计缺陷，并针对缺陷重新优化了钻机起落装置的液压系统。