FIELD: metallurgy.
SUBSTANCE: scrap heater includes hopper with lid and discharge valve communicated with gas duct for removing flue gases from furnace through scrap in hopper. Hopper has inclined bottom and it is mounted on support that inclines hopper from loading position to unloading position when roof of furnace is drawn apart. Discharging valve has grid of water-cooled fire resistant tubes for passing flue gases through scrap and it is arranged in end of hopper at side of furnace. Inclination angle of hopper bottom relative to horizon in unloading position exceeds slip angle of scrap along steel sheet.
EFFECT: improved effectiveness of mean- and low-power electric-arc furnaces.
3 cl, 1 dwg
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