高炉喷煤浓相输送技术的探讨

粉状物料的浓相输送是一种底密悬浮流。实现浓相输送,必须注意输送管径、补气量等参数。Ｆｒ准数是浓相输送的重要参数,浓相输送与粉料的溢流性、脱气性、哈斯勒比值有密切关系,粘性强、粒度太细的粉料不适于浓相输送。浓相输送系统中,单管路—分配器系统优于多管路系统,可调煤粉给料器的调节性能优于流化罐供料系统。     

氧化铝浓相输送管线磨损原因分析及防治措施

根据采用浓相输送系统运输Al2O3粉的实践经验,参考国内铝行业浓相输送的成功范例,特撰写本文。对浓相输送管线磨损的原因进行分析,并提出防治措施,有效地降低管线磨损,节约人力物力成本,提高浓相输送系统的技术进步。     

压力容器单双管浓相输送技术的比较

对平果铝业公司电解铝厂生产物料输送系统中压力容器单、双管浓相输送技术的原理、工艺参数，技术特点及各项技术经济指标进行了分析对比，指出双管浓相输送是电解生产物料输送技术发展的方向。     

氧化铝粉在参与碳素净化后对浓相输送管线的磨擦机理研究

氧化铝粉在参与碳素净化后对浓相输送管线的磨擦机理与新鲜氧化铝粉不同，通过试验和理论研究，得出提高管线使用寿命的方法。     

太钢高炉喷煤技术的进步

太钢高炉喷粉技术的发展,经历了常压喷吹到高压喷吹,稀相输送到浓相输送的过程。经过对制粉和喷吹系统的一系列改造,实现了集中制粉、远距离浓相输送和浓相喷吹,输煤浓度达到５６ｋｇ／ｋｇ以上,喷吹浓度达到９０ｋｇ／ｋｇ以上。     

高炉喷煤浓相输送技术

高炉喷煤必须采用气力输送,按单位气体载运煤粉量的多少,可分为稀相输送和浓相输送。浓相输送的特点是单位气体载运的粉量大,或运送单位粉料的耗气量小,输送速度较低。气力输送中,一般稀相输送的速度在15m/s左右,而浓相输送的速度则小于10m/s。由于粉料在气力输送中对管道、设备的磨损量与气流速度的2～3次方成正比,     

压力容器单双管浓相输送技术的比较

对平果铝业公司电解铝厂生产物料输送系统中压力容器单、双管浓相输送技术的原理、工艺参数 ,技术特点及各项技术经济指标进行了分析对比 ,指出双管浓相输送是电解生产物料输送技术发展的方向     

太钢高炉喷煤技术的进步

太钢高炉喷煤技术的发展,经历了常压喷吹到高压喷吹,稀相输送及喷吹到浓相输送及喷吹。经过对制粉和喷吹系统的一系列改造和技术开发及操作优化,实现了利用传统球磨机集中制粉、远距离浓相输送和浓相喷吹的工艺。并使煤粉一次布代收集,且布代收集器体积小、过滤面积大、收粉效率高。制粉能力创全国同类型制粉系统指标最高水平,输煤浓度达到５６ｋｇ／ｋｇ以上,喷吹浓度达到９０ｋｇ／ｋｇ以上的较好效果。     

铁水KR预处理高效输粉系统研究与应用

通过研究目前铁水脱硫工艺中输粉效率低、输送喷溅问题,改进输粉设备喷射结构。同时改进输送管道定常助吹系统,解决浓相输送带来的物料堆积堵塞管道问题。采用新技术后,输粉效率提高1倍以上,脱硫环境得到较大改善。     

莱钢750m^3高炉喷煤系统技术改造

莱钢750m^3高炉喷煤系统改造采用了如下先进技术：中速磨制粉，布袋收粉器收粉，浓相输送技术等，喷煤系统改造后，高炉煤比达到150kg/t以上，焦比降到400kg/t以下，取得了较好的效果。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

Shijiazhuang will Build the World's Biggest Replacingcopper-with-aluminum Cable Production Base

正Shijiazhuang City will build the world’s biggest replacing-copper-with-aluminum cable production base,the annual output value can reach 100 billion yuan,in the future it will develop replacing-copper-with-aluminum highend industry cluster.This piece of news was learned by the reporter at the Rare Earth highiron Aluminum Alloy[Nonferrous Business Opportunity:Aluminum alloy door]Cable Conductor New Technology Application Seminar held at the provincial capital.     

Chongqing is Preparing to Set Up Nonferrous Metal Exchange,in a Bid to Become the Transit Place of Kazakhstan Copper

正Since the beginning of Chongqing’s upgrading to a municipality directly under the Central Government,Chongqing City has established direct friendly relationship with Almaty,Kazakhstan,and carried out a series of cooperation in commerce and trade,and culture     

Guangxi Baise Extends Industrial Chain to Combat Loss in Aluminum Business

正"For each tonne of aluminum being produced,the upstream enterprise on the aluminum industrial chain will suffer loss about 2000yuan."Said Liang Xiao,Deputy Director of Pingguo Industrial Park Management Committee under the Guangxi Baise City,one of the four major aluminum industry bases in China,on August 11.Extending aluminum     

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL ANNUAL CONTENTS Volume 21(2014)

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Chinalco Straightened Out Copper Assets,and Delegated Stock Equity of Yunnan Copper

正Immediately after the news that Chinalco transferred 58%stock equity of Yunnan Copper Group to its wholly-owned subsidiary China Copper Corporation Limited free of charge was disclosed on July 9,many individual investors couldn’t help but to think:Does it mean China Copper Corporation Limited will assemble assets for overall listing?At present,among main copper business companies under China Copper Corporation     

The Development and Reform Commission Encourages Private Capital to Enter Geological Prospecting Field

正At the press conference recently held by the National Development and Reform Commission under the theme"Deepen Reform in Investment AuditApproval System",when answering questions from reporters,Huang Min,Director of the Department of Fixed Assets Investment of the National Development and Reform Commission,said that in the future it would continue to intensify efforts in geological prospecting,and actively guide social capital to enter this field.     

Guangxi's first Nickel Industry Development Research Report Was Released

正Recently,Guangxi Metallurgical Research Institute,a subsidiary of Guangxi Nonferrous Metals Group,completed survey on laterite and related manufacturers in the region,by combining the current development status of laterite both at home and abroad,it compiled Guangxi’s first"Research Report on the Development of Guangxi Nickel Industrial Chain"which adopted laterite as the study subject.This report expounded on the current     

China’s Major Non-ferrous Metals Imports & Exports(End of September. 2014)

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China's Major Non-ferrous Metals Imports & Exports

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