By Yuri N. Toulouevski, Ilyaz Y. Zinurov
The publication includes an research of theoretical dependences, bottlenecks and proscribing elements of a brand new expertise utilized in either Consteel and shaft furnaces working with flat tub. Performances acquired and possibilities of those furnaces are tested. according to this research, a metal melting combination of the recent sort – gas arc furnace FAF has been constructed and provided. compared to the simplest glossy electrical arc furnaces of exact capability the productiveness of FAF is greater by means of 36% and electricity intake is decrease via an element of 1.8. atmosphere features are significantly improved.
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Additional resources for Electric Arc Furnace with Flat Bath: Achievements and Prospects
In 1980s–1990s, so called energy optimizing furnaces (EOF) developed by Pains have been operating in Brazil . The freeboard shape of these furnaces resembled that of EAF except for the fact that they did not have electrodes since they used energy of fuel instead of electrical energy. The shaft scrap preheater was placed above the central part of water-cooled furnace roof. 2. The shaft was divided from top to bottom into several chambers by the movable water-cooled fingers. A portion of scrap was placed on the fingers in each chamber.
As a result, the critical temperatures causing fuel underburning and settlement of the scrap in this zone are reached in a shorter time. Respectively, approximately proportionally to the increase in power of the burner, the potential effective burner operation time is shortened, whereas the amount of heat transferred to the scrap increases insignificantly. Only a relatively small portion of scrap pile is heated, which has little effect on energy characteristics of the furnace. Attempts to expand an action zone of the burners due to changing the shape of the flame during the heat are known.
Scrap charging into a bath is carried out by special water-cooled chute installed at the end of the conveyor. This chute is filled with scrap at regular intervals, then moved into a freeboard through a window, and the scrap is dropped into a bath. 5 m. A furnace roof is opened only during the first heat after a furnace scheduled maintenance before which all liquid metal and slag is tapped from the furnace. During this heat, one basket of scrap is charged into the furnace from the top in order to accumulate on the bottom a sufficient amount of liquid metal to start continuous scrap charging by conveyor.
Electric Arc Furnace with Flat Bath: Achievements and Prospects by Yuri N. Toulouevski, Ilyaz Y. Zinurov