CN207376080U - Mineral hot furnace tapping device - Google Patents

Abstract

The utility model provides a kind of mineral hot furnace tapping device, including the tapping hole being arranged on the furnace body of mineral hot furnace；Spout enclosure, one end of spout enclosure and the outer wall of furnace body connect, and the other end tilts down extension towards the direction away from furnace body；The chute that taps a blast furnace being arranged inside spout enclosure, it taps a blast furnace one end of chute and the outer wall of furnace body connects, and the chute that taps a blast furnace is connected with tapping hole, and ramming mass layer is equipped on the slot bottom for the chute that taps a blast furnace, ramming bed of material upper berth is equipped with green mud enhancement layer, can reduce the laying cost of mineral hot furnace tapping device.

Description

Submerged Arc Furnace Tapping Device

technical field

The utility model relates to the technical field of smelting, in particular to an iron tapping device for a submerged arc furnace.

Background technique

At present, the iron trough used as the tapping device of the submerged arc furnace is paved with a single non-baking iron trough ramming material. In the working process of the submerged arc furnace, the molten iron will directly wash the iron ditch. At the same time, because the temperature of the molten iron is around 1500°C and the density is relatively high, the iron ditch is easily corroded at the impact point of the molten iron on the iron ditch. The rear iron ditch is prone to pits, which will cause molten iron to splash, and bring greater safety hazards to the iron operation. In order to ensure safe production, the eroded iron trench must be refurbished. If only the eroded section is refurbished, due to the high density of molten iron, it has strong penetration, and the newly laid iron trench section and the old iron trench section cannot form a whole. Under the action of thermal expansion and contraction, it is easy to form gaps, causing molten iron to penetrate downwards, thus destroying the entire iron trench. In order to ensure smooth production and safety, it is necessary to frequently repair the iron trench, which increases the labor intensity of workers. , prompting the high cost of laying the iron ditch.

It can be seen that due to the structural defects of the tapping device of the submerged arc furnace, the laying cost of the tapping device of the submerged arc furnace is high.

Utility model content

The purpose of the embodiment of the utility model is to provide a tapping device for a submerged arc furnace to solve the problem of high laying cost of the tapping device for a submerged arc furnace.

In order to achieve the above object, the embodiment of the present utility model provides a submerged arc furnace iron tapping device, including a taphole arranged on the furnace body of the submerged arc furnace, the submerged arc furnace iron tapping device also includes:

A chute casing, one end of the chute casing is connected to the outer wall of the furnace body, and the other end extends downwards in a direction away from the furnace body;

The tapping chute is arranged inside the chute shell, one end of the tapping chute is connected with the outer wall of the furnace body, and the tapping chute is connected with the tapping hole, and a layer of ramming material is laid on the bottom of the tapping chute, and the ramming material A reinforced layer of green mud is laid on the layer.

Optionally, the distance between the end of the green mud reinforcement layer close to the furnace body and the position corresponding to the taphole on the ramming material layer is 200 mm.

Optionally, the green mud reinforcing layer has a length of 50 cm to 60 cm, a width of 15 cm to 20 cm, and a thickness of 1 cm to 2 cm.

Optionally, the tapping device of the submerged arc furnace further includes: a chute prefabricated block arranged between the bottom of the tapping chute and the shell of the chute.

Optionally, the outer sleeve of the taphole is provided with a mud sleeve.

Optionally, the cross section of the chute housing is U-shaped.

Optionally, the cross section of the tapping chute is U-shaped.

Said scheme of the utility model has following beneficial effect:

In the embodiment of the present utility model, since the ramming material layer and the green mud reinforcement layer are successively laid on the bottom of the tapping chute, when the molten iron flowing out from the tap hole reaches the tapping device of the submerged arc furnace, it is directly flushed. It is a green mud reinforcement layer, and because of the strong sintering hardness and erosion resistance of the green mud reinforcement layer, the service life of the tapping device of the submerged arc furnace is greatly extended, and the repair frequency of the tapping device of the submerged arc furnace is reduced. The laying cost of the tapping device of the submerged arc furnace is reduced.

Description of drawings

Fig. 1 is one of structural representations of the submerged arc furnace tapping device in the embodiment of the present invention;

Fig. 2 is the second structural schematic diagram of the tapping device of the submerged arc furnace in the embodiment of the utility model.

Explanation of reference signs:

1. Furnace body; 101. Submerged arc furnace refractory brick layer; 102. Furnace shell; 2. Taphole; 3. Chute shell; 4. Tapping chute; 5. Ramping material layer; 6. Green mud reinforcement layer; 7. Prefabricated block for chute; 8. Mud cover; 9. Floor platform.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

As shown in Figures 1 to 2, a specific embodiment of the present invention provides a tapping device for a submerged arc furnace, which includes a taphole 2 arranged on a furnace body 1 of the submerged arc furnace. The device also includes: a chute shell 3, one end of the chute shell 3 is connected to the outer wall of the furnace body 1, and the other end extends downwards in a direction away from the furnace body 1; One end of 4 is connected with the outer wall of the furnace body 1, and the tapping chute 4 is connected with the tapping hole 2. A ramming material layer 5 is laid on the bottom of the tapping chute 4, and a green mud layer is laid on the ramming material layer 5. Strengthen layer 6.

Wherein, in a specific embodiment of the present utility model, the furnace body 1 of the submerged arc furnace includes a submerged arc furnace refractory brick layer 101 and a furnace shell 102, and the taphole 2 communicates with the submerged arc furnace refractory brick layer 101 and the furnace shell 102, To ensure that the molten iron in the submerged arc furnace can flow out from the taphole 2. And here as an example, the above-mentioned furnace shell 102 may be a steel shell to ensure the normal operation of the submerged arc furnace.

Wherein, in the specific embodiment of the utility model, when the molten iron flows out from the tap hole 2, the molten iron directly scours the green mud reinforcing layer 6, and because the sintering hardness and erosion resistance of the green mud reinforcing layer 6 are strong, so that The service life of the tapping device of the submerged arc furnace is extended, thereby reducing the repair frequency of the tapping device of the submerged arc furnace, thereby reducing the laying cost of the tapping device of the submerged arc furnace. At the same time, the above-mentioned green mud reinforcement layer 6 is easy to replace, so when the green mud reinforcement layer 6 needs to be replaced, the replacement of the green mud reinforcement layer 6 can be quickly completed, reducing the labor intensity of the workers, and effectively preventing the occurrence of Potential safety hazards to ensure safe production.

Optionally, in a specific embodiment of the present invention, the distance between the above-mentioned green mud reinforcement layer 6 close to the furnace body 1 and the position corresponding to the taphole 2 on the ramming material layer 5 is 200 mm. Optionally, the green mud reinforcing layer 6 has a length of 50 cm to 60 cm, a width of 15 cm to 20 cm, and a thickness of 1 cm to 2 cm.

Wherein, in a specific embodiment of the utility model, since the green mud reinforcement layer 6 is close to one end of the furnace body 1 and the distance between the position corresponding to the taphole 2 on the ramming material layer 5 is 200 millimeters, and the green mud The mud reinforcement layer 6 has a length of 50 cm to 60 cm, a width of 15 cm to 20 cm, and a thickness of 1 cm to 2 cm, which is equivalent to laying green on the part of the ramming material layer 5 that is directly washed by molten iron. The mud reinforcement layer 6 achieves the effect of prolonging the service life of the tapping device of the submerged arc furnace while reducing the cost. Of course, it can be understood that, in the specific embodiment of the present invention, the laying position of the above-mentioned green mud reinforcement layer 6 on the ramming material layer 5 and the specific size of the green mud reinforcement layer 6 are not limited, but the above-mentioned green mud reinforcement layer 6 The thickness of mud strengthening layer 6 everywhere is uniform to ensure that the service life of the tapping device of the submerged arc furnace can be extended.

Wherein, in a specific embodiment of the present utility model, the above-mentioned ramming material layer 5 can be a baking-free ramming material layer, and when the green mud reinforcing layer 6 is laid on the ramming material layer 5, it can be The smooth and flat tool smoothes the green mud reinforcement layer 6 and bakes it after smoothing and compacting to enhance the hardness of the green mud reinforcement layer 6 . It should be noted that the sintered green mud reinforcement layer 6 has excellent high-temperature erosion resistance hardness, which can greatly improve the service life of the tapping device of the submerged arc furnace. It is worth mentioning that a large number of tests have shown that the above-mentioned green mud reinforcement layer 6 can increase the service life of the tapping device of the submerged arc furnace by 2 to 3 times.

Optionally, in a specific embodiment of the present utility model, the above-mentioned submerged arc furnace tapping device further includes: a chute prefabricated block 7 , which is arranged between the bottom of the tapping chute 4 and the chute shell 3 .

Among them, in a specific embodiment of the present utility model, the above-mentioned chute shell 3 is mainly used to protect the tapping chute 4, avoiding unnecessary damage to the tapping chute 4, and the above-mentioned chute prefabricated block 7 is mainly used to assist in tapping the tapping chute. 4 is arranged in the chute shell 3, and ensures that the tap chute 4 is connected with the taphole 2. And here as an example, the above-mentioned chute casing 3 may be a steel chute casing, so as to protect the tapping chute 4 . In addition, during actual assembly, the above-mentioned chute casing 3 may be located on the floor platform 9 .

Optionally, in a specific embodiment of the present invention, a mud jacket 8 is sheathed on the outside of the above-mentioned taphole 2 . Wherein, the mud jacket 8 is mainly used to ensure that molten iron can flow into the tapping chute 4 during the tapping operation. And as an example, the mud sheath 8 may be a refractory mud sheath to prolong the service life of the mud sheath 8, thereby helping to ensure the entire tapping operation.

Optionally, in a specific embodiment of the present utility model, the cross-section of the above-mentioned chute housing 3 is U-shaped, and correspondingly, the cross-section of the above-mentioned tapping chute 4 is U-shaped, so that during the tapping operation, the molten iron Wash directly on the green mud reinforcing layer 6, so as to prolong the service life of the tapping device of the hot furnace, reduce the repair frequency of the tapping device of the submerged arc furnace, and further reduce the laying cost of the tapping device of the submerged arc furnace.

It can be seen that in the specific embodiment of the present utility model, since the ramming material layer 5 and the green mud reinforcement layer 6 are successively laid on the bottom of the tapping chute 4, the molten iron flowing out from the tapping hole 2 reaches the mine heat. When tapping the furnace tapping device, the green mud reinforcement layer 6 is washed directly, and because the green mud reinforcement layer 6 has strong sintering hardness and erosion resistance, the service life of the tapping device of the submerged arc furnace is greatly extended, and the The repair frequency of the tapping device of the submerged arc furnace reduces the laying cost of the tapping device of the submerged arc furnace.

The foregoing is a preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (7)

1. A kind of 1. mineral hot furnace tapping device, including the tapping hole being arranged on the furnace body of mineral hot furnace, which is characterized in that the ore deposit heat Stove tapping device further includes：

   Spout enclosure, one end of the spout enclosure are connected with the outer wall of the furnace body, the other end towards away from the furnace body side Extend to tilting down；

   The chute that taps a blast furnace being arranged inside the spout enclosure, one end of the chute that taps a blast furnace are connected with the outer wall of the furnace body, And the chute that taps a blast furnace is connected with the tapping hole, and ramming mass layer, the ramming are equipped on the slot bottom of the chute that taps a blast furnace Green mud enhancement layer is equipped on the bed of material.
2. 2. mineral hot furnace tapping device according to claim 1, which is characterized in that the green mud enhancement layer is close to the furnace body One end and the ramming bed of material on the distance between position corresponding with the tapping hole be 200 millimeters.
3. 3. mineral hot furnace tapping device according to claim 2, which is characterized in that the length of the green mud enhancement layer is 50 lis For rice to 60 centimetres, width is 15 centimetres to 20 centimetres, and thickness is 1 centimetre to 2 centimetres.
4. 4. mineral hot furnace tapping device according to claim 1, which is characterized in that the mineral hot furnace tapping device further includes： Chute prefabricated section is arranged between slot bottom and the spout enclosure of the chute that taps a blast furnace.
5. 5. mineral hot furnace tapping device according to claim 1, which is characterized in that the outer cover of the tapping hole is equipped with mud Set.
6. 6. mineral hot furnace tapping device according to claim 1, which is characterized in that the U-shaped profile of the spout enclosure.
7. 7. mineral hot furnace tapping device according to claim 1, which is characterized in that the U-shaped profile of the chute that taps a blast furnace.