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引进Corex工艺需要注意的若干问题 总被引:2,自引:0,他引:2
使用大量非焦煤、大量氧气及输出大量煤气生产铁水是Corex工艺的主要特点。引进该工艺时应对其原燃料消耗、产品质量、设备寿命、输出煤气的应用以及投资和成本等问题予以重视。用输出煤气生产直接还原铁在技术上是可行的,但要注意两个工艺的连接,如CO2脱除量和脱3除方法的选择,加热过程中的析碳以及竖炉还原过程的渗碳等技术关键。在竖炉还原工艺上推荐HYLⅢ工艺。 相似文献
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介绍了由煤气发生炉,煤气加热炉和还原竖炉组成的Corex竖炉还原热模拟装置,用木炭或用原煤加少量木炭的为原料,O2和CO2为气化剂,产生还原煤气,将铁矿石还原成金属率达90%以上的海绵铁的过程。描述了不过程中竖炉内的温度分布,熔剂分解和不同炉料结构时的海绵铁粒度组成和金属化率等试验情况,讨论了还原煤气的成分,温度,流量,还原时间以及炉料结构等对海绵铁金属化率的影响。 相似文献
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CDR300型复合炉工艺方案构思,将COREX炉与直接还原竖炉并联在同一框架内。熔融气化炉生产的分部高温还原气(1050℃)与脱除CO2(加热到400℃)的部分预还原炉炉顶气混合成800℃ ̄850℃左右的还原气,一部分用作COREX预还原的还原气,另一部分用作直接还原竖炉的还原气。该工艺可同时得到年产热铁水20成t及直接还原铁12万t两种产品。 相似文献
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在用CO2-O2煤气工艺中,以分批生产的方法。利用一个固定的气化床,研究了等离子对尾气成分及温度的影响,还研究了下列数据变化时的情况,即煤的等级,输入气的CO2/O2比,煤床的深度以及电的输入方式(单相和三相输入)结果表明等离子的能够增加尾气的温度,提高它的还原性能(例如增加了H2,CO的含量)等离子处理过后如可能进行脱硫处理,则尾气能够作为还原剂用于直接还原工艺。 相似文献
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本文将在已有资料的基础上对Corex法和ПКB法作一尽可能枚的技术经济分析。Corex法的矿石预还原率大于905,煤气的二次燃烧率极低;而ПКB法的矿石预还原率为0,煤气的二次燃烧率达-60%。在熔融还原流程中,它们是两种极端的情况。深入分析这两个流程对于了解煤气二次燃烧率在0-60%(或矿石预还原率0-90%)范围内的其它流程将是有益的。 相似文献
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为制订铁矿石(烧结矿,球团矿)冶金性能检测方法的三项国家标准,在检测中需发生和配制CO还原气(即高炉煤气模拟气体),以供使用。本试验在整个气体发生(含木炭干馏),配制,净化过程中,都采用了气相色谱进行分析,以控制合理的工艺条件,分析的主要成份是CO,N2,CH4,O2,H2等。 相似文献
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建立了空气-煤炭法发生还原煤气的化学反应表达式。推导出了还原煤气中CO、CO2和H2含量之间的关系式。此关系式可以用来判断还原煤气成分分析结果的可靠性。 相似文献
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叙述Corex炼铁法的发展现状,存在问题及前景,并对Corex工艺与传统的高炉工艺,全氧高炉工艺(FOBF)及平衡氧高炉工艺(BOBF)进行了技术经济评价。 相似文献
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关于熔融还原最佳还原度计算公式的讨论 总被引:1,自引:0,他引:1
本文根据质量平衡推导出熔融还原最佳还原计算公式,计算了熔融还原在最佳还原度时碳耗,产生的CO量和煤气的利用率,并与F.Oeters教授的计算结果进行了比较。 相似文献
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<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic 相似文献
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正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field, 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year, 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform. 相似文献
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正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness. 相似文献
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正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully. 相似文献