Open AccessEffect of heat treatment of quartzite on the mechanism of destruction of the lining of induction furnaces
Author(s) -
А. С. Завёрткин
Publication year - 2019
Publication title -
novye ogneupory
Language(s) - English
Resource type - Journals
ISSN - 1683-4518
DOI - 10.17073/1683-4518-2019-1-49-53
Subject(s) - crucible (geodemography) , metallurgy , smelting , induction furnace , materials science , cristobalite , slag (welding) , tridymite , carbonization , blast furnace , composite material , alloy , quartz , chemistry , scanning electron microscope , computational chemistry
The mechanism of wear of quartzite lining of induction crucible furnaces during the smelting of iron and steel is presented. It has been established that the main cause of lining wear is a decrease in its strength caused by the transition of the tridimite joint into cristobalite, which is much easier to wash off the walls of the crucible with moving metal and slag. The second important factor of wear is the choice of quartzite raw materials, its material and granulometric compositions, the firing mode and the technology of melting during operation of the furnace. Silicon recovery from silica of carbonization lining by carburizer and cast iron, which is part of, is a secondary factor of crucible lining wear. Ill. 4. Ref. 5. Tab. 1.