简介：8月份以来，钢材价格再现暴跌之势，市场也从之前的暴涨中冷静下来，对产能过剩的担忧再次笼罩一度发烫的市场情绪。

简介：对复方丹参滴丸治疗冠心心绞痛患者28例进行疗效观察，并与复方丹参片进行对照，疗程为4周，结果表明：心绞痛总有效率为96．43％，对照为66．67％；快速止痛总有效率89．29％，组无显效作用，经统计学处理P均＜0．05。

简介：Byanalyzingthethermalandburdenstructureconditionsinsidethemelter-gasifierofCOREXprocess,theadvantageanddisadvantageofPCIintothemelter-gasifierareclarified.TheinfluenceofPCIontherunningconditioninsidethefurnaceisanalyzedbasedontheinformationfromproductionoperationandmathematicalandphysicalsimulations,andmeasurestotacklewiththeproblemsarisingfromPCIareproposed.Themainresultsareasfollows.①Duetotheunfavorableconditionsforcokingofcoalinthemelter-gasifier,cokingofchargedlumpycoaltogetsemicokewithgoodsizeandstrengthcanhardlybeexpected.Tomaintainthepermeabilityoftheburdencolumn,apackedbedsimilartoblastfurnaceisnecessary.Therefore,alittlemorecokewithPCIinplaceofmostofthelumpycoalmayimprovetherunningofthereactor.Thiscanalsomakethelumpycoalselectioneasier.②Overallheatbalanceanalysisofthemelter-gasifiershowsthatPCIhasnoeffectonthethermalconditionofthefurnaceasawhole.Localheatbalanceanalysis,however,showsthattheheathofthemelter-gasifierisinacriticalstateoflowheatsupply.PCIintothehearthwilldeterioratethethermalcondition.ToavoidthecoolingofthehearthzonebyPCI,moreoxygencanbeblowntothehearthzone,i.e.increasetheoxygensupplytothehearthanddecreaseaccordinglytheoxygensupplytothefreeboard.Moreoxygensupplytothehearthseemstobringouttheissueofanincreaseinfuelrateand/ortherebythesmeltingintensity.DetailedanalysisofthephysicalchemicalprocessesconcludedthatPCIwithmorecorrespondingoxygensupplywillnotleadtotheincreaseoffuelrate.③Comparingwithblastfurnace,theracewayvolumeofCOREXmelter-gasifierisaboutonly1/10～1/5ofthatofcorresponding-sizeblastfurnace.ThissmallracewayisnotfavorableforPCI.ToenlargetheracewaytogetmorefavorableconditionforPCI,lesstuyereswithmoreoxygensupplyofeachtuyereisproposed.④Comparingwithlumpycoalfeedingintot

简介：PresentlytheironandsteelmakersarecompelledtoincorporaterationalinitiativestoreduceitsprocessingCO2totalemissions.Inthemediumandlongterm,theinjectionofsmallparticlesofbiocharthroughthetuyereesinblastfurnaces,herecalledBio-PCI,offersattractivefeaturesfromtheenvironmentalandmetallurgicalpointofview,asitisarenewablecarbonneutralreductantandpresentslesserimpuritiesthancoke.However,itsutilizationinironplantsisbeenhinderedbythetraditionallargeavailabilityofrelativelyeconomicalcoalandcoke.Asthecostoftheprincipalprocessinginputsincreases（coal,cokeandironore）thegapbetweenfossilandrenewablereductantsdecreases.Inthissense,ourcontributionaimstocomplementthemetallurgicalinquiryoftechnicalfeasibilitywithastrategicidentificationoftheareaswithbestprospectstobenefitsfromtheincorporationofBio-PCI:wherecanitflourish?.Ouranalysisleadstoindicatethatemergingcountriesinspecific,China,BrazilandIndia,areinaprimepositiontoincorporatetheBio-PCIastheysimultaneouslycomplywithagrowingironindustrybasedonblastfurnaces,andpossessanimportantpotentialforenergygenerationfromforestryresidues.

简介：自1990年以来。日本各钢铁公司的大型高炉都实施了喷煤操作。在20世纪90年代，随着喷煤装置的增加和喷煤量的提高，焦比降到了350-400kg／t。自2000年以来，随着利用系数的提高。喷煤比反而星下降的趋势。

简介：达涅利康力斯得到一份订货合同，将向涟源铜铁公司(LISCO)提供一套PCI喷煤系统，其中包括喷煤系统设计、供货和技术服务。这套新的喷煤系统将为涟源正在建设的6号新高炉啧吹煤粉。PCI喷煤系统最大喷煤量可达250kg／t铁水，以确保高炉能够有效利用喷入炉内的煤粉。该系统将在2004年建成试车。设备供货仅限于关键设备，

简介：热轧带钢氧化皮结构是影响其酸洗效果的重要因素。本文以304、430两种典型牌号的不锈钢为研究对象,结合相关研究及试验检测,分析其热轧卷氧化皮的结构和成分,研究其对酸洗效果的影响。

简介：针对门业板边部翘皮和黑斑缺陷,通过对生产工艺过程的反查和试验对比研究,阐明了板坯边部裂纹是门业板基板边部产生翘皮和黑斑缺陷的根源,而钢中硫含量高、Mn/S偏低是门业板板坯裂纹产生的主要原因,且板坯加热温度在1170~1200℃时可以有效减轻此类缺陷。

简介：介绍了电炉厂在废钢场地封闭管理,丰富炉料品种和优化炉料结构等方面所做的工作,证实了精料方针能显著改善技经指标。

简介：

简介：

简介：

简介：