Innovation in Electric Arc Furnaces: Scientific Basis for by Yuri N. Toulouevski
By Yuri N. Toulouevski
This booklet equips a reader with wisdom important for serious research of techniques in electrical arc furnaces and is helping to choose the best ones and for his or her winning implementation. The e-book additionally covers common matters concerning background of improvement, present country and clients of steelmaking in electrical Arc Furnaces. hence, it may be precious for everyone who reviews metallurgy, together with scholars of faculties and universities.
The sleek strategies of mechanisms of Arc Furnace procedures are mentioned within the ebook on the point enough to unravel useful difficulties: to assist readers missing wisdom required within the box of warmth move in addition to hydro-gas dynamics, it comprises numerous chapters which supply the mandatory minimal of knowledge in those fields of technological know-how. so as to larger determine various options, the booklet describes adventure of the applying of comparable concepts in open-hearth furnaces and oxygen converters. a few promising rules on key concerns concerning intensification of the warmth, that are of curiosity for builders of recent methods and gear for electrical Arc Furnaces, also are the fear of the ebook
It will be famous, that accomplishing the simplified calculations as detailed from utilizing "off the shelf" courses enormously promotes entire knowing of actual fundamentals of techniques and results produced by means of different factors. This e-book offers a variety of examples of such calculations played through simplified tools and formulation.
Getting acquainted with fabric during this ebook will enable the reader to accomplish required calculations on his / her personal with none problems.
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Additional info for Innovation in Electric Arc Furnaces: Scientific Basis for Selection
In modern high power furnaces operating on scrap, an average oxygen consumption is approximately 40 m3/t, not infrequently, it is as high as 50 m3/t. Oxygen consumption increases, in some cases, to 70 m3/t in furnaces where oxygen is used also for post-combustion of carbon monoxide (CO) in the freeboard. Consumption of carbon powder injected into the bath reaches as high as 15–17 kg/t. Since the heat duration is very short, such specific oxygen and carbon consumption values require quite high-intensity injection.
At the same time, electric energy consumption is decreased due to the reduction in the time when the furnace is open and loses a lot of heat. Dust-gas emission into shop atmosphere is reduced also while scrap charging. In furnaces of 300 to 400-t capacity, due to the freeboard height extend, the number of charges is decreased to two per heat. However, considering the effect of increasing the furnace freeboard height on the utilization of heat in it, it should be taken into account that sidewall area is increased and, consequently, heat losses with cooling water are increased as well.
Power of grids significantly limits selection of furnaces which can be installed in a given region. This selection is affected by the necessity to provide so-called furnace electromagnetic compatibility with other electrical energy consumers supplied from the same grids. The electromagnetic compatibility is described by the furnace capability of functioning normally without exerting unacceptable effect on other consumers. This effect is caused by the fact that EAFs deteriorate the quality of electrical energy of the grid and the more so the less the difference between the power of the grid and the total power of the furnaces supplied by it is.