Rotation type electric-arc furnace bottom and electric-arc furnace
A technology of rotating furnace bottom and electric arc furnace, applied in the field of electric arc furnace, which can solve the problems of poor stirring effect of electric arc furnace bottom blowing technology, achieve good dynamic conditions, prevent steel leakage accidents, and improve stirring effect
Active Publication Date: 2018-02-02
MCC CAPITAL ENGINEERING & RESEARCH
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Problems solved by technology
Bottom blowing and stirring technology generally blows inert gas at certain positions on the bottom of the electric furnace to drive the molten steel to flow and stir the molten pool. However, due to the small depth of the electric furnace molten pool, the bottom blowing gas quickly escapes from the upper surface, and the bottom blowing column only It can drive the flow of molten steel near the bottom blowing point, so the stirring effect of the bottom blowing technology of the electric arc furnace is poor
Method used
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Embodiment 1
[0042] In Example 1 and Comparative Example 1, numerical simulations were carried out on the bottom of the rotatable electric arc furnace and the bottom of the traditional bottom-blown electric arc furnace, respectively, and the mixing effects of the molten pool in the two stirring methods were discussed.
[0043] Example 1
[0044] The main parameters in the present embodiment are the diameter 1 / 2R of the bottom of the furnace, the height of the stirring paddle 1 at the bottom of the furnace is 200 mm, the number of stirring paddles 1 at the bottom of the furnace is 4, and the rotating speed of the bottom of the furnace 2 is 2 revolutions / min. The bottom blowing gas pressure is 1.6Mpa, and the width of the slit air chamber 3 is 5mm.
[0045] The mixing time of the molten pool in this embodiment is 5.2s.
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The invention discloses a rotation type electric-arc furnace bottom and an electric-arc furnace. The rotation type electric-arc furnace bottom comprises a fixed furnace bottom body (4), a rotation furnace bottom body (2) and a bottom gas injection mechanism; the rotation furnace bottom body (2) is of a round structure, a ring-shaped gap gas chamber (3) is formed between the rotation furnace bottombody (2) and the fixed furnace bottom body (4), the rotation furnace bottom body (2) can rotate with the center line of the rotation furnace bottom body (2) as the axis, the inner surface of the rotation furnace bottom body (2) is provided with a furnace bottom stirring paddle (1), and gas can sequentially enter a bath in the rotation furnace bottom body (2) through the bottom gas injection mechanism and the gap gas chamber (3). The rotation furnace bottom body drives molten steel in the bath to be rotated and stirred through the furnace bottom stirring paddle; meanwhile, inert gas is continuously blown in the gap gas chamber for stirring the bath, the dual stirring effects are stacked, the bath stirring effect is greatly improved, and the smelting dynamic condition is improved.
Description
technical field [0001] The invention relates to the field of steelmaking equipment, in particular to a rotatable electric arc furnace bottom, or an electric arc furnace containing the rotatable electric arc furnace bottom. Background technique [0002] The stirring of the molten pool in the electric arc furnace has always been one of the difficult problems in electric arc furnace steelmaking. Due to the limitation of the structure and shape of the electric arc furnace itself, the depth of the molten pool of the electric arc furnace is generally small, which brings great difficulties to the stirring of the molten pool. [0003] At present, the bottom blowing stirring technology is mainly used in the electric arc furnace molten pool stirring technology. Bottom blowing and stirring technology generally blows inert gas at certain positions on the bottom of the electric furnace to drive the molten steel to flow and stir the molten pool. However, due to the small depth of the ele...
Claims
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Login to View More IPC IPC(8): C21C5/48C21C5/52
CPCC21C5/48C21C5/52Y02P10/20
Inventor 于灏王佳李博潘宏涛邱明罡
Owner MCC CAPITAL ENGINEERING & RESEARCH