Practice for Extending Blast Furnace Campaign Life at Wuhan Iron and Steel Corporation

Shou-rong, Zhang

doi:10.1016/s1006-706x(06)60101-5

Cited by 15 publications

(4 citation statements)

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“…As a goal pursued by modern BFs, long campaign life can effectively reduce the expense for overhaul and medium repair and economic losses caused by the shutdown [38]. China has made great progress in longevity of BFs.…”

Section: Large-scale Trend and Campaign Lifementioning

confidence: 99%

Recent progress and development of ironmaking in China as of 2019: an overview

Yajie

Zuo

Zhao

2020

Ironmaking & Steelmaking

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The recent progress and development of ironmaking in China as of 2019 was introduced. China has achieved a remarkable progress in eliminating outdated production capacity of steel industry, accomplishing the upper limit target ahead of schedule to reduce production capacity by 150 million tons during the thirteenth Five-Year plan. The blast furnaces are gradually forming a fourelement burden structure of "sinter+pellet+lump+scrap", adapting to the increase of scrap supply in society. Large-scale blast furnaces has been the development trend, 25 blast furnaces with inner volume exceeding 4000 m3 are in operation by now. In order to cope with the environmental protection policy and benefit from the sufficient supply of steel, the direct reduction process has gained a booming development opportunity in China. Although the smelting reduction has formed a certain scale in China, it still cannot compete with blast furnace ironmaking process in terms of energy utilization efficiency.

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Section: Large-scale Trend and Campaign Lifementioning

confidence: 99%

Recent progress and development of ironmaking in China as of 2019: an overview

Yajie

Zuo

Zhao

2020

Ironmaking & Steelmaking

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“…Ti(C,N), graphite and molten iron build up on the refractory wall [7][8][9]. At present, it has been recognized by the majority of the iron workers that using titanium-bearing burdens helps to maintain and prolong the life of the blast furnace hearth [10,11]. Confirmation that of the role of titanium-bearing burdens in furnace protection was observed in the damaged hearth of blast furnaces [12].…”

Section: Introductionmentioning

confidence: 99%

Metallurgical properties and furnace protection practice of different titanium-bearing burdens

Chen

Sun

et al. 2019

Ironmaking & Steelmaking

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The excellent properties of titanium pellet Z in the blast furnace hearth protection were determined by studying the composition, metallurgical properties and a over four years period of application practice of titanium-containing pellets(C&Z) and ores (J, G&D) in a domestic blast furnace. The reduction and softening-melting properties of titanium pellet Z were better than those of titanium lump ore G, D and J, and titanium pellet C. Under the condition of a titanium load of 7-8 kg TiO 2 /tHM, the fuel rate, pressure drop and slag ratio of the blast furnace using titanium pellet Z were better than that for the titanium-bearing resources. Using pellet Z had an obvious effect on the decrease of the hearth temperature and sustained stability. It was concluded that pellet Z was an excellent titanium-bearing burden for both laboratory research and industrial trial.

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“…The copper cooling stave is the key cooling part in high temperature furnace, which protects the lining and prolongs furnace body life. At present, the study about the copper cooling stave mainly focuses on the following aspects, such as the channel breakage, heat transfer between the cooling stave and furnace wall, the cooling stave stress field, the thermal deformation and structure optimization of the cooling stave, there is a little literature related to manufacture process of copper cooling stave. At present, there are two main methods manufacturing the copper cooling stave: the first method is to drill a channel in the copper plate, and then a part of the channel is blocked and the cooling water flowing channel is produced, but the part blocked is easy to leak and causes a safety accident during the use of cooling stave, in addition, this method cannot manufacture the cooling stave with complicated channel (shown in Figure ); the second method is the embedded tube sand mold casting process, that is, before pouring liquid copper, a tube is placed in the cavity, after the liquid copper is poured and solidifies, the embedded tube is integrated with the liquid copper.…”

Section: Introductionmentioning

confidence: 99%

Influence of cooling medium characteristics on embedded tube fusion condition in the process of embedded tube sand mold casting

Gao

Gong

Niu³

et al. 2019

Heat Trans. Asian Res.

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Embedded copper tube sand mold casting is the main manufacturing method of iron‐making blast furnace copper cooling stave, comparing embedded copper tube outer wall temperature with copper melting point is used to judge the fusion between liquid copper and embedded copper tube. On the basis that the computational model is reliable though experimental proof, the paper studies the influence of cooling medium characteristics on the embedded copper tube outer wall temperature. The calculated results show that the cooling medium thermal physical properties play a vital role on heat transfer between the liquid and embedded copper tube in the process of casting and determine the embedded copper tube outer wall temperature and the fusion. Through the numerical research, the cooling medium with suitable physical properties is found, adjusting the cooling media Reynolds number is an effective way to regulate the embedded tube outer wall temperature to the temperature required for fusion; in addition, modifying the cooling medium temperature entering the embedded tube is also a means adjusting the embedded tube outer wall temperature and improving the fusion between the embedded tube and liquid copper, but the method is not easy to operate in practice.

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Practice for Extending Blast Furnace Campaign Life at Wuhan Iron and Steel Corporation

Cited by 15 publications

References 0 publications

Recent progress and development of ironmaking in China as of 2019: an overview

Recent progress and development of ironmaking in China as of 2019: an overview

Metallurgical properties and furnace protection practice of different titanium-bearing burdens

Influence of cooling medium characteristics on embedded tube fusion condition in the process of embedded tube sand mold casting

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