共查询到18条相似文献,搜索用时 78 毫秒
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石钢0号高炉焦比燃料比偏高,为降低燃料成本,通过煤比的提高并优化喷吹效果,达到降低焦比和燃料比的效果,并摸索出0号高炉的经济煤比,有效降低生铁成本。 相似文献
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三钢实施低成本战略,近年来高炉燃料比逐年下降,本文通过对影响燃料比的主要因素进行分析,探索进一步降低三钢高炉燃料比,达到降低炼铁成本目的。 相似文献
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高炉冶炼燃料比的降低,可有效提升高炉生产的经济效益,促进高炉生产的顺利进行,对我国高炉冶炼技术工艺水平的提升具有重要作用。基于此,本文简要分析了降低高炉冶炼燃料比的意义,从注重冶炼强度的控制、保证燃料质量的稳定性、规范高炉操作流程及确保高风温四个方面,重点论述了降低高炉冶炼燃料比的技术工艺,以期促进高炉冶炼工作的顺利开展。 相似文献
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高炉喷吹燃料的中心环节是保证在一定喷吹量条件下,努力提高置换比,大力降低综合燃料比。不管喷吹何种燃料,置换比越高,则节能、降焦和经济效益越显著。因此进一步分析提高喷吹燃料的置换比是高炉工作者的迫切任务。置换比的高低除与喷吹燃料本身理化性质有关外,还与入炉原燃料质量、风温、富氧水平、喷吹燃料粒度和雾化程度、风口区 相似文献
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郑红霞 《冶金标准化与质量》2012,50(3):55-57
高炉燃料比是反映钢铁企业能耗的综合指标,降低高炉燃料比是钢铁企业节能减排、降低生产成本的关键。编制Excel表应用“微调项”控件轻松计算出最有可能实现的高炉燃料比。 相似文献
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一、前言 钢铁工业能耗占我国总能耗的15—16%。高炉炼铁,占钢铁联合企业总能耗的70—80%。其中太部分是高炉燃料。 降低高炉燃料比是高炉操作技术的最高目标。本公司为了降低燃料比,广泛比较择用有关新技术,改善原料性质,控制炉料分布,稳定炉况操作制度,实现了高炉的低燃料比操作。千叶6号高炉大幅度降低燃料比就是一例。以下介绍该炉概况。 相似文献
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为了降低京唐高炉燃料消耗,通过对Rist操作线的意义进行阐述,以京唐1号高炉生产参数为依据,计算并绘制了Rist操作线,据此分析了煤气利用率、风温、生铁含碳、金属化率等高炉操作参数改变对燃料比的影响。针对这些影响因素,京唐1号高炉对降低燃料比进行了一系列攻关工作,通过采取强化原燃料管理,提高原燃料质量,为降低燃料消耗创造条件。优化高炉操作,降低热风炉拱顶温度,对热风管系进行改造,提高送风系统的安全性,尽可能提高风温水平;优化装料制度,获得较高的煤气利用率;高风温、富氧,稳定均匀喷吹以提高煤粉置换比。通过对生产攻关实践,首钢京唐1号高炉实现了低燃料比生产,达到490kg/t。 相似文献
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降低高铁低硅烧结固体燃耗的研究 总被引:1,自引:0,他引:1
研究了高铁低硅烧结矿的铁品位和SiO2含量与固体燃耗的关系,以及提高生石灰配比和添加蛇纹石对烧结矿产质量和固体燃耗的影响,从而找到了降低高铁低硅料烧结固体燃耗的途径。 相似文献
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Oxidation of low carbon steel in multicomponent gases: Part II. Reaction mechanisms during reheating
H. T. Abuluwefa R. I. L. Guthrie F. Ajersch 《Metallurgical and Materials Transactions A》1997,28(8):1643-1651
Oxidation behavior of low carbon steel during reheating in an industrial walking-beam steel reheat furnace was investigated.
It was observed that scaling (oxidation) rates were reduced by reducing the input air/fuel ratio to the furnace, thereby lowering
concentrations of free oxygen in the combustion products from about 3 to 1.5 pct. Laboratory experiments involving isothermal
and nonisothermal oxidation were carried out in atmospheres consisting of oxygen, carbon dioxide, water vapor, and nitrogen.
A general equation for the prediction of weight gains due to oxidation during reheating, using isothermal oxidation rate constants,
was developed. The prediction of weight gains from nonisothermal oxidation conducted in the laboratory was poor, owing to
a separation of the scale from the metal substrate which took place at about 900 °C. The predicted weight gains during reheating
in the industrial reheat furnace indicated that oxidation rates during reheating were intermediate between linear and parabolic,
especially during reheating with high air/fuel ratio. However, the linear mechanism predominated. Laboratory isothermal experiments
for oxidation in atmospheres containing free oxygen showed that the magnitude of the linear oxidation rates was determined
by the oxygen concentration in the atmosphere. It was concluded that the observed reduction in scaling rates during reheating
of low carbon steel in the industrial reheat furnace was a result of the lower free oxygen level in the furnace atmosphere. 相似文献
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