A blast furnace casthouse swing chute

Abstract

The invention discloses a swinging chute for a blast furnace discharge yard. The swinging chute comprises a swinging chute shell, bottom baffles and outlet end baffles, wherein the swinging chute shell comprises a middle section, a left section and a right section; the number of the bottom baffles is four; two of the bottom baffles are arranged between the middle section and the left section; theother two bottom baffles are arranged between the middle section and the right section; the number of the outlet end baffles is four; and two of the outlet baffles are arranged at the outlet end of the left section, and the other two outlet end baffles are arranged at the outlet end of the right section. According to the swinging chute for the blast furnace discharge yard, a desilieonization agentis better mixed with molten iron, after the mixture is subjected to twice enhanced stirring, the desilieonization agent is dispersed more uniformly in molten iron, and a better dynamic condition is provided for the reaction of the desilieonization agent and silicon in molten iron.

Description

technical field [0001] The invention relates to a swing chute, in particular to a swing chute for a blast furnace casthouse. Background technique [0002] At present, due to the increase in single-iron tapping and the high flow rate of molten iron in large-scale blast furnaces, the swing nozzle is used to switch between the two molten iron tanks, and the molten iron flowing out of the molten iron ditch is transferred to both sides of the molten iron ditch through the swing chute. Smoothly inject molten iron into the mixed iron car or molten iron tank car under the platform of the casting yard. After one molten iron tank is filled with molten iron, the molten iron in the swing chute can flow into another molten iron tank by tilting the swing chute. [0003] Desiliconization in front of the blast furnace provides the necessary conditions for steelmaking to provide low-silicon hot metal, shorten the production time of the whole process of iron and steel smelting, reduce the con...

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Problems solved by technology

[0004] In order to improve the desiliconization efficiency, ironworkers increase the contact surface between the desiliconization agent and the molten iron by reducing the original silicon of blast furnace molten iron, increasing the carrier gas pressure, changing the shape of the spray gun nozzle, etc., and have achieved quite good results, but in the existing Under the level of technological equipment, the desiliconization in front of the blast furnace has reached the bottleneck stage

However, none of the existing desiliconization measures in front of the furnace has strengthened the process of the desiliconization agent flowing into the molten iron tank after being mixed with the molten iron in the swing chute.

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