Open AccessSmelting of ferrosilicum from the position of energy and technology criteria of ferroalloys electric arc furnace operation
Author(s) -
A. P. Shkirmontov
Publication year - 2018
Publication title -
černaâ metallurgiâ. bûlletenʹ naučno-tehničeskoj i èkonomičeskoj informacii/černaâ metallurgiâ. bûlletenʹ naučno-tehničeskoj informacii
Language(s) - English
Resource type - Journals
eISSN - 2619-0753
pISSN - 0135-5910
DOI - 10.32339/0135-5910-2018-8-43-49
Subject(s) - ferroalloy , smelting , electric arc furnace , ferrochrome , metallurgy , electric power , pyrometallurgy , range (aeronautics) , materials science , electricity , process engineering , power (physics) , mechanical engineering , nuclear engineering , engineering , electrical engineering , composite material , physics , quantum mechanics
For estimation of ferroalloy-producing electric arc furnace operation efficiency an energy and technology criteria proposed. Its physical meaning is as follows: it determines a share of energy from the current source, in particular its useful part, spent by ore reduction carbon-thermal process of a ferroalloy production (ferrosilicum, ferrochrome, ferromanganeese), taking into account heat losses and degree of extraction of the leading element into the alloy. Results of an analysis of ferroalloys smelting parameters in electric arc furnaces via carbon-thermal process by example of smelting FeSi using energy and technology criteria of ferroalloys furnace operation presented. It was shown, that while increasing values of energy and technology criteria, the specific consumption of electric power per one basic tonne of the alloy is reducing. For mid power electric furnaces that melted 75% FeSi, the energy and technology criteria of ferroalloys furnace operation corresponds to a range from 0.300 to 0.314. At the same time, the specific electric power consumption is from 9.0 to 8.6 MW∙h/t of the alloy. A satisfactory, but less efficient version of the furnace operation is the range of energy and technology criteria from 0.272 to 0.293 and specific electricity consumption of electric power varies from 9.8 to 9.2 MW∙h/t of alloy. Such a complex value can be considered as the main element of the energy and technological audit of the ferroalloy furnace facility, as well as to identify effective operating modes, analysis of usage of various types of charge materials (ore raw materials, carbonaceous reductants) and the application of innovative melting technologies.