Results 251 to 260 of about 354,316 (303)
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1968
Publisher Summary This chapter discusses the electric arcs. Electric arcs are widely used for the study of atomic constants and parameters. Principally the strong radiation and the fact that most arc sources are in the regime of local thermal equilibrium have made them important research tools in quantitative spectroscopy, specifically for the study ...
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Publisher Summary This chapter discusses the electric arcs. Electric arcs are widely used for the study of atomic constants and parameters. Principally the strong radiation and the fact that most arc sources are in the regime of local thermal equilibrium have made them important research tools in quantitative spectroscopy, specifically for the study ...
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Vitrification of electric arc furnace dusts
Waste Management, 2002Electric arc furnace baghouse dust (EAFD), a waste by-product of the steelmaking process, contains the elements that are volatilized from the charge during the melting (Cr, Pb, Zn, Cu and Cd). The results of leaching tests show that the concentration of these elements exceeds the regulatory limits.
PELINO, Mario +4 more
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2016
In this chapter, electric steelmaking is introduced with a short review: share, raw materials, operation, typical equipment, off-gas treatment, emissions. Electric-based steelmaking enjoys a much comfortable position than integrated classical blast furnace—oxygen steelmaking facilities, regarding greenhouse emissions.
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In this chapter, electric steelmaking is introduced with a short review: share, raw materials, operation, typical equipment, off-gas treatment, emissions. Electric-based steelmaking enjoys a much comfortable position than integrated classical blast furnace—oxygen steelmaking facilities, regarding greenhouse emissions.
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Electrical conductivity from electric arc measurements
Journal of Plasma Physics, 1973A technique involving the use of a trial function containing several adjustable parameters has been developed for the purpose of deducing the electrical conductivity from measurements on the electric arc. It is used to re-analyze experiments in argon, xenon and nitrogen. Some improvement in agreement between theory and experiment is noted.
R. S. Devoto, D. Mukherjee
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Electric Arc Behaviour in Steelmaking Arc Furnaces
DENKI-SEIKO[ELECTRIC FURNACE STEEL], 1967製鋼用アーク炉の生産性向上について,最近いろいろな研究が進められているが,基本的なアーク現象の研究は2, 3の報告がされているにすぎず,アーク炉のアーク,すなわち,大電流アーク現象については十分に解析されていないのが現状である。今回,小型3相アーク炉(容量100kgおよび2t)で,16mm高速度撮影装置を用いて毎秒3,000～4,000コマ/秒の速度で炉操業中のアークを撮影し,そのアーク現象を観察検討した結果,アーク現象に極性の影響が大きいこと,アークフレアが主に電極から生じているらしいこと,電極先端形状の相違によってアーク現象が大きく支配されることなどがわかった。また4'径電極では中空電極の効果が観察できた。
Katsunori Takinami +4 more
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Transactions of the American Institute of Electrical Engineers, 1927
DEFINITION OF ARC. An arc is a discharge of electricity, between electrodes in a gas or vapor, which has a voltage drop at the cathode of the order of the minimum ionizing or minimum exciting potential of the gas or vapor. ARC CHARACTERISTICS. The relation of arcs to glow discharges and coronas is illustrated by discussion of ``generalized'' curve of ...
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DEFINITION OF ARC. An arc is a discharge of electricity, between electrodes in a gas or vapor, which has a voltage drop at the cathode of the order of the minimum ionizing or minimum exciting potential of the gas or vapor. ARC CHARACTERISTICS. The relation of arcs to glow discharges and coronas is illustrated by discussion of ``generalized'' curve of ...
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Electric Arc Furnace Slag Concrete
2016The aim of this section is to comprehensively investigate the possibility of substituting natural aggregates with Black/Oxidizing Electric Arc Furnace (EAF) slag, at high replacement ratios, to produce structural concrete. The properties of the slag are described in detail, in terms of chemical composition, mineralogy, microstructure and physical ...
Pellegrino, Carlo, Faleschini, Flora
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Arcing Faults in Electrical Equipment
IEEE Transactions on Industry Applications, 2009Electrical incidents that result in significant injuries to people are often the result of substantially unconstrained free-burning arcing fault currents within electrical equipment. It is necessary to understand the nature of these arcs and be able to quantify the parameters before it is possible to really comprehend what is actually happening inside ...
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Rocking indirect arc electric furnaces
Electrical Engineering, 1934The electric furnace of the rocking type with indirect arc has been developed to the point where it may be used not only For the melting of nonferrous metals but also in the production of castings of various types of iron and steel. Accurate control of the process is possible.
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