JPS5837939Y2 - Continuous processing equipment for hot metal - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a continuous processing apparatus for hot metal, in which a hot metal pool is provided in the middle of a hot metal trough, and a hot metal component regulator is introduced into the pool and stirred.

The components of hot metal produced in a shaft furnace (blast furnace) are processed in the next process (
However, depending on the operation of the blast furnace, problems with equipment, or changes in the needs of the next process, pig iron may be produced with components that do not suit the next process.

In addition, there may be cases where it is more advantageous overall to adjust the composition between the blast furnace and the next process.

Batch type and continuous type devices are currently in practical use as these component adjustment devices, but the present invention relates to the continuous type.

Conventional continuous processing equipment uses impellers in which hot metal is immersed and agitated, but the driving parts, such as shafts and impellers, are exposed to high heat and have a short lifespan.

There is a spouting of high-temperature gas and scattering of dust from the adjustment agent addition opening, and considerable effort must be expended to prevent this.

Additionally, a slag layer is formed on the surface of the hot metal in the vessel after the reaction between the conditioning agent and the hot metal, resulting in poor stirring efficiency between the hot metal component conditioning agent and the hot metal supplied through the opening at the top. ing.

This device was devised to eliminate the drawbacks of the conventional devices mentioned above, and it adjusts the components transported by gas by setting the outer periphery of the vessel that forms the hot metal reservoir or the cover that covers it at a certain angle (variable) toward the hot metal. This is a stirring device in which a plurality of nozzles are arranged in order to generate a stirring swirling flow in the hot metal by blowing gas at a high flow rate together with the agent from the nozzle.

This device does not have any moving parts that are exposed to high heat, so it can be used satisfactorily using a conventional refractory hollow nozzle.

Furthermore, since there are no parts that are in direct contact with high-temperature hot metal, its durability is excellent over a long period of time.

In addition, it is possible to completely seal the nozzle with the vessel after setting the nozzle at a certain angle.

The present invention will be described below based on embodiments shown in the drawings.

As illustrated in FIGS. 1 and 2, the present invention provides a reservoir with an outlet angle 1 for hot metal, and a container (vessel) 2.
It has a plurality of nozzles 3 on the outer periphery.

The nozzle 3 has a certain angle with respect to the radial direction so as to stir the molten metal 4 in the container 2 and generate a swirling flow, and is installed at a certain angle with respect to the surface of the hot metal 4.

On the other hand, the hot metal component adjustment agent is fluidly transported and supplied to the plurality of nozzles 3 through the header 5, and the dynamic pressure of the fluid and the inertial force of the powder cause the hot metal 4 to swirl and the adjustment agent and the hot metal to be stirred. It will be done.

6 is a weir for separating and draining hot metal from the processing agent.

Incidentally, in order to increase the stirring effect, it is also easy to install a baffle plate 7 immersed in the hot metal 4 inside the container 2.

According to the present invention, desiliconization treatment of hot metal can be carried out extremely efficiently.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the structure of the present invention, and FIG. 2 is a plan sectional view. 1... Outlet corner, 2... Container, 3...
... Nozzle, 4 ... Hot metal, 5 ... Header, 6 ... Weir, 7 ... Baffle plate.

Claims (1)

[Scope of utility model registration request] In a device that continuously adjusts the composition by installing a molten metal pool in the middle of the blast furnace hot metal gutter, introducing the hot metal composition adjusting agent and stirring it, the gas is blown onto the hot metal along with the gaseously transported composition adjusting agent, and the hot metal is rotated. A continuous hot metal processing device characterized by having multiple nozzles installed on the cover or the outer periphery of the vessel to generate a stirring flow.