CN201828158U - Water cooling device at bottom of submerged arc furnace - Google Patents

Abstract

A water-cooling device for the bottom of a submerged arc furnace. A water-cooling tube is laid on the aluminum silicate material at the bottom of the furnace. The water-cooling tube is close to the carbonaceous material. Beat the material, build high thermal conductivity graphite blocks on the carbon ramming material, the water cooling pipe outside the furnace wall is connected with the water supply pipeline through the water supply tank, and the other end of the water cooling pipe is connected with the return water pipe. The utility model can make the high temperature of the lining material in the furnace be taken away by the cooling water of the water-cooling pipe through the carbonaceous material with high thermal conductivity, so as to achieve a good cooling effect.

Description

Submerged Arc Furnace Bottom Water Cooling Device

technical field

The utility model belongs to the field of submerged arc furnace smelting, in particular to a bottom water cooling device of a submerged arc furnace.

Background technique

During the smelting process of the submerged arc furnace, the temperature in the furnace is high. In order to ensure the normal use of the refractory materials in the furnace, a cooling method is adopted for the lining material of the furnace bottom, and an air cooling device is installed under the furnace bottom to reduce the temperature of the furnace bottom. purpose, but the cooling effect of this cooling device is not good. When the blast is used for cooling, due to the high pressure of the blast, the hot air is easy to weld at the welded part of the air-cooled pipe and the honeycomb micropores caused by the aging of the pipe. From these places, it enters into the furnace bottom brick lining, causing the furnace bottom carbon brick to be oxidized and damaged. The molten iron still erodes the furnace bottom lining, destroys the organizational structure of the furnace bottom refractory material, and the service life of the submerged arc furnace is short.

Utility model content

The purpose of this utility model is to provide a submerged arc furnace bottom water cooling device, which is used to solve the cooling problem of the submerged arc furnace bottom, enhance the cooling effect of the submerged arc furnace, and increase the service life of the submerged arc furnace lining.

In order to achieve the above purpose, the following technical solutions are adopted: a bottom water cooling device of a submerged arc furnace, a water cooling pipe is laid on the aluminum silicate material at the bottom of the furnace, the water cooling pipe is closely attached to the carbonaceous material, and the high-strength refractory castable is rammed below the center line of the water cooling pipe , Fill carbon ramming material above the center of the water cooling tube, build high thermal conductivity graphite blocks on the carbon ramming material, and connect the water cooling tube outside the furnace wall through the water supply tank and the water supply pipeline, and connect the other end of the water cooling tube to the return water pipe.

The diameter of the water-cooled pipe is a water-cooled pipe with a diameter of Φ80mm.

An adjustable valve is installed on the water supply pipeline above the water supply tank.

A water collecting tank is installed on the outside of the furnace wall.

The utility model can make the high temperature of the lining material in the furnace be taken away by the cooling water of the water-cooling pipe through the high-thermal conductivity carbonaceous material, so as to achieve a good cooling effect; according to the cooling requirement, an adjustable valve is installed at the inlet of the water-cooling pipe for adjustment The flow of water controls the cooling intensity; a sump is also installed outside the furnace wall to keep the water level in the water cooling pipe at the bottom of the furnace always at a higher position. The application of the submerged arc furnace water cooling device and the supporting use of high thermal conductivity carbonaceous materials have greatly improved the cooling strength of the submerged arc furnace bottom, moved the solidification line of the molten iron at the bottom of the furnace, and reduced the chemical erosion of the molten iron and its impurities on the lining material and penetration, which improves the service life of the submerged arc furnace and ensures the safety, high efficiency and long life of the submerged arc furnace.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the distribution diagram of the water cooling tube of the present utility model;

Fig. 3 is the structural representation of the water supply tank of the present utility model;

Fig. 4 is an enlarged view along the M-M direction of Fig. 3 .

Detailed ways

As shown in Figures 1 to 4, a submerged arc furnace bottom water cooling device, laying a water-cooling tube 2 with a diameter of Φ80mm on the aluminum silicate material of the furnace bottom 1, and pounding high-strength refractory castables below the center line of the water-cooling tube. Carbon ramming material is filled above the center of tube 2, and high thermal conductivity graphite block 3 is built on top of the carbon ramming material. The water cooling tube 2 is in close contact with the carbon ramming material and the high thermal conductivity graphite block. The water supply pipeline 5 is connected, and the other end of the water cooling pipe is connected with the return water pipe 6 . According to the cooling needs, an adjustable valve 7 is installed on the water supply pipeline above the water supply tank to adjust the flow of water to control the cooling intensity; a water collection tank 8 is also installed outside the furnace wall, and the water collection tank 8 is connected to the return pipe 6, and the water collection tank The height of the water level in 8 is higher than the height of the return pipe 6, so that the water level in the furnace bottom water cooling pipe 2 is often at a higher position.

Claims (4)

1. A submerged arc furnace bottom water-cooling device is characterized in that: a water-cooling pipe is laid on the aluminum silicate material at the bottom of the furnace, the water-cooling pipe is close to the carbonaceous material, and the high-strength refractory castable is rammed below the center line of the water-cooling pipe. Carbon ramming material is filled above the center of the tube, and high thermal conductivity graphite blocks are built on top of the carbon ramming material. The water cooling pipe is connected to the water supply pipeline through the water supply tank outside the furnace wall, and the other end of the water cooling pipe is connected to the return water pipe. 2. The bottom water cooling device of the submerged arc furnace according to claim 1, characterized in that: the water cooling pipe has a diameter of Φ80mm. 3. The bottom water cooling device of submerged arc furnace according to claim 1, characterized in that: an adjustable valve is installed on the water supply pipeline above the water supply tank. 4. The bottom water cooling device of the submerged arc furnace according to claim 1, characterized in that: a water collection tank is installed outside the furnace wall.

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