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Electric Arc Furnace with Flat Bath: Achievements and Prospects (SpringerBriefs in Applied Sciences and Technology) - Kindle edition by Yuri N. Toulouevski.
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This book presents a new electric arc furnace process and discusses potential for developing a steelmaking aggregate of the new generation, namely the Fuel Arc Furnace based on existing shaft furnaces. It also reviews the history of developing var Flat bath is a revolutionary change of technological process. Du kanske gillar.

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Chanel Daniele Bott Inbunden. Spara som favorit. Skickas inom vardagar. Furnaces with flat bath having a number of important advantages, however, lag behind modern EAFs in productivity and in electrical energy consumption as well.

Electric Arc Furnace with Flat Bath - Achievements and Prospects | Yuri N. Toulouevski | Springer

In addition, shaft furnaces have very serious problems concerning environment. Analysis of the mechanism of basic processes of melting a scrap in liquid metal including heat transfer from metal to scrap is given. The experimental data obtained by the method of steel samples melting are considered in detail.


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It is shown how scrap melting time under actual EAF bath conditions can be calculated by using these data. The three most efficient innovations capable of sharp accelerating the melting process are determined. These are: increase in velocity of metal flows at the scrap charging zone due to bath blowing with oxygen tuyeres submerged into the melt to a slag-metal interface; expansion of the volume of the charging zone by means of changing bath configuration as well as using special charging devices; and high-temperature scrap preheating in the shaft with high-power burner devices.

Specifics of furnace scrap facilitating and hindering intensive heating of it up to high temperatures. A shaft furnace as a steel melting aggregate largely satisfying requirements of high-temperature scrap preheating and continuous melting it in liquid metal as well. Inefficiency of a flow of off-gases leaving a furnace to provide such heating because of insufficient heat power of this flow.

[PDF] Electric Arc Furnace with Flat Bath: Achievements and Prospects (SpringerBriefs in Applied

Inapplicability of well-known oxy-gas burners for this purpose. The system of high-temperature scrap preheating in a furnace shaft with high-power oxy-gas burner devices of recirculation-type is considered.

Designed parameters of the system are given. This system has been developed by the authors.

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It is characterized by a low temperature of flames. Off-gas energy is used in the system for decomposition of dioxins contained in combustion products leaving the shaft and also can be used for other purposes not attached to the scrap melting process, for example, for production of steam with technological and energy parameters.

EAF- Electric ARC Furnace of Bangladesh AKS

Various ways and devices for oxygen bath blowing are analyzed from the point of view of their influence on a scrap melting rate in liquid metal. For the purpose of the highest increase in the scrap melting rate, the bath blowing system with movable roof oxygen tuyeres developed by the authors is offered. Submerging of tuyeres to slag-metal interface as well as direction of jets to the scrap charging zone are key features of the system. Such directional submerged blowing can provide considerable increase in the intensity of metal stirring at the scrap charging zone and sharp shortening of scrap melting time as well.

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Electric Arc Furnace with Flat Bath

Basic principles of calculation and design of oxygen tuyeres having a durability required are examined. The offered roof tuyeres comprise of tips with most effective jet cooling which provides high tuyere durability when submerging not only into slag but also that into metal. Basic designed tuyere parameters are given. The tuyeres are automatically maintained at the slag-metal interface by using reliable sensors monitoring positions of tuyere tips relatively to this interface.


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