简介:TheCOREXprocessisauniqueindustrializedsmeltingreductiontechnologyforiron-makingpresentlyintheworld.Oneofitsstrikingcharacteristicsisitsabilitytodirectlyutilizelumpcoalasitsmainfuel.Therefore,theCOREXprocessuseslittle,ornocokeatall.TherequirementsonlumpcoalfortheCOREXprocessweregiveninthispaper.Inordertoreducethecokeconsumptionandgiveplaytotheadvantagesofdirectlyusinglumpcoal,theappropriateratioofcoketolumpcoalneedstobedetermined.Thispaperalsosummerizedseveraladvancedmethodsofusingpowderedcoalgeneratedbythetransporting,loadingandunloadingoflumpcoal.InordertosolvethelackofcoaltypesforCOREXandobservethecrackinganddevolatilizationactionoflumpcoalinthemelter-gasifier,anexperimentaldeviceandanewmethodwereproposedtotestthecrackinganddevolatilizationcharacteristicsoflumpcoal.Bymeansofthenewmethod,thedevolatilizationandcrackingbehaviorsoflumpcoalcanbeinvestigated,whichishelpfultotheselectionoflumpcoalfortheCOREXprocess.
简介:一系列Ni-CeO2催化剂被一起沉淀方法与Na2CO3准备,NaOH,并且混合急躁(Na2CO3:NaOH;1:1比率)同样急躁分别地。催化表演上的precipitants的效果,Ni-CeO2催化剂的物理、化学的性质在X光检查的帮助下被调查衍射(XRD),Brumauer-Emmett-Teller方法(赌注),Fourier变换红外线的光谱学(英尺红外),thermogravimetry(TG),和H2-TPR描述。Ni-CeO2催化剂为反向的水气体移动反应关于他们的催化表演被检验,并且他们的催化活动是被评价:Ni-CeO2-CP(Na2CO3:NaOH=1:1)>Ni-CeO2-CP(Na2CO3)>Ni-CeO2-CP(NaOH)。相关到特征结果,催化剂由一起沉淀准备了与,这被发现混合急躁(Na2CO3:NaOH;1:1比率)同样急躁氧空缺的大多数数量与高度驱散的Ni粒子伴随了,它做了相应Ni-CeO2-CP(Na2CO3:NaOH=1:1)催化剂展览最高催化的活动。当时Na2CO3或NaOH急躁在Ni-CeO2催化剂导致了更少或没有氧空缺。作为结果,Ni-CeO2-CP(Na2CO3)和Ni-CeO2-CP(NaOH),催化剂介绍了差的催化性能。