SU529358A1 - Device for draining steel from steelmaking unit - Google Patents

Description

water, the curvature of which corresponds to the curvature of the metal stream falling from this steel 11, is from the bottom of the ladle at a distance equal to 5-20% of the height of the ladle, depending on the amount of furnace slag entering the ladle,

At the level of 8O-95% of the height of the ladle, the metal pipe has a pocket for the exit of furnace slag after the bucket is filled. In order to increase the NIN turbulence of the metal flow in the metal pipeline, and thus, to improve the amount of metal treated in it with synthetic slag, the metal section below the pocket and the output has the shape of a truncated geometric shape (coius or pyramid). The device can be attached either to the chute, or to have an autonomous mounting of the bucket. The device 1 consists of a steel base 2 with a cross section of arbitrary shape, which for convenience of lining consists of two detachable parts 3 Part of the metal pipe. it is immersed in a ladle; it has an outer and an inner lining. 4. The lining of the refractory bricks to the steel base is carried out according to the type of fastening of vaulted refractories. - At the junction with the furnace chute, the device has a lined window 5 for the introduction of deoxidizers, alloying, modifiers and synthetic slag. At the slag discharge level, the bucket device has a pocket 6 for discharging furnace slag. A pocket 6 (or a drain-toe bucket) can be elongated to discharge the slag directly into the slag bowl. To attach to the bucket, the device has supports 7 that fix it when installed in the required position, the device operates as follows. Metal from the furnace through chute 8 with a tight lid 9 enters device 1, lowered at its lower end into the casting ladle. In the course of filling the bucket with metal through the window 5, the necessary additives (deoxidizing agents, alloying, modifiers, synthetic slag, etc, d) are fed from the bins, which are carried along by the metal stream to the bottom of the bucket. In this case, there is an intensive mixing with the metal of all technological additives, which excludes the possibility of their entanglement in the slag, which can be covered with a mirror of the metal rising in the ladle. By shutting down the discharge, Tiuuia 11 (.chioi slag fills the device and

through the pocket It is poured into the bucket directly into the jacquard bowl (with an elongated pocket or drain bucket}, thereby preventing the furnace slag from entering the bucket to prevent air from leaking through the pocket during metal drainage by closing it with 10 liquid slag. At the end of the drain, the device is removed with the edge along with the chute.

Claims (1)

In order to prevent the secondary oxidation of the metal and create more favorable conditions for the interaction of technological additives with it, as well as to prevent the furnace slag from getting into the ladle, using the present device reduces the consumption of deoxidizing and alloying metals and increasing the purity of the metal. Claim 1., A device for discharging steel of a steel-smelting unit, b1I1Ech chambered lid and installed in the bottom porous blocks. - about tl-and chaschee e with the fact that in order to prevent the secondary oxidation of the metal, butt ;, „, increase. And the degree of assimilation of deoxidizing agents, easy-shrinking and modifying alemutovo device is equipped with a refractory metal complex connected to a drain chute to a metallag jet that falls on a discharge chute and has a curvature, which falls from a steelmaking aggregate and is equipped with a charging hole and a pocket in a slot that has a curvature and a pull-out pocket that is located on the junction box with a loading slot and a pocket that is located on the junction box with a loading metal hole and a pocket that has a curvature, a metallag jets from the smelting unit, which is positioned on plot to the straight, while the met-alloprovod is fixed relative to the bucket by means of radially attached meta Metal pipe metal supports ,, 2, Device according to claim, 1.S o tl and h a y y e e with that. 4TOj to disperse the flow of metal at the exit of the metapipeline, the latter at the end of the straight section, equal to 20-50% of its length, is made with an increase in the cross section downwards by 1.5-2 times the cross-sectional area of the metal conductor 3 The device according to claim 1, characterized by the fact that 4TOj in order to eliminate air leaks through the pocket, firstly from the noise of the fusible material, 4, The device according to n,. This is due to the fact that. in order to drain the slag from the furnace directly into the slag, the pocket is made, with a depth equal to 5O% of the length of the straight section of the metal pipe, 5, The device according to claim 1 | This is due to the fact that, in order to reduce the mixing of the furnace slag that enters the ladle at the beginning of the discharge with the metal, the lower the end of the device is located from the bottom of the bucket at a distance equal to 5-20% of its height. Sources of information taken into account in the examination: 1, USSR Author's Certificate, No. 390343, M. Cl. F 27 D 3/14, September 6, 71.