Slag stopping device used in front of blast furnace

Abstract

The utility model provides a slag blocking device used in front of a blast furnace, which comprises a slag blocking plate provided with a gap or a hole, and the slag blocking plate is arranged in a main channel and used for blocking large blocks of slag; and the connecting part is arranged at the top of the slag baffle, and a connecting hole is formed in the connecting part. The slag baffle comprises a middle rib and side ribs, the side ribs are arranged on the outermost side of the slag baffle, the middle rib is arranged in the middle of the side ribs, and gaps are formed between the side ribs and the middle rib. According to the slag stopping device used in front of the blast furnace, large slag blocks are stopped in the main runner through the slag stopping plate so that the large slag blocks can make full contact with molten iron, the large slag blocks have sufficient time to be melted before entering the slag runner so that the size can be reduced, accidents can be reduced, and production can be conducted smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace smelting, in particular to a slag blocking device used in front of a blast furnace. Background Art

[0002] During the blast furnace smelting process, molten iron flows out of the tap hole and flows into the main ditch. Therefore, the main ditch receives the molten iron flowing out of the tap hole.

[0003] Most existing blast furnaces use a double taphole design. That is, a blast furnace is equipped with two tapholes for tapping iron, and each taphole has its own main groove for receiving molten iron. In actual operation, the two tapholes tap iron in turn.

[0004] Since two tapholes tap iron in turn, when one taphole stops tapping iron, the temperature of the slag iron in its main groove drops, causing the slag to solidify and form a crust, which is easy to form large pieces of slag. When the next tapping occurs, the original slag in the main groove, together with the newly generated slag in the molten iron, will float on the surface of the flowing molten iron. After flowing out of the main groove, the slag will enter the slag groove. Large pieces of slag are easy to affect the normal slag flushing due to their large volume.

[0005] The current method of treating slag is to pour it into a granulator and add water to the granulator to make the slag into water slag. However, large pieces of slag may be attached with a certain amount of molten iron, which may cause an explosion when it meets water after entering the granulator, or even blow up the granulator, causing safety accidents and affecting normal production.

[0006] Therefore, in order to solve the problem of large pieces of slag in molten iron in the blast furnace, the utility model attempts to provide a slag blocking device for the front of the blast furnace, so that the large pieces of slag have sufficient time to melt and reduce their volume before entering the slag ditch, thereby reducing the occurrence of accidents and allowing production to proceed smoothly. Utility Model Content

[0007] In order to solve the problem of large pieces of slag in molten iron in blast furnaces, the utility model attempts to provide a slag blocking device for the front of the blast furnace, so that the large pieces of slag have sufficient time to melt and reduce their volume before entering the slag ditch, thereby reducing the occurrence of accidents and allowing production to proceed smoothly.

[0008] The utility model provides a slag blocking device for the front of a blast furnace, comprising: a slag blocking plate, which is provided with gaps or holes, and is arranged in a main groove to block large pieces of slag; and a connecting part, which is arranged on the top of the slag blocking plate and is provided with connecting holes.

[0009] Furthermore, the width of the slag blocking plate is smaller than the width of the main groove, and the height of the slag blocking plate is greater than the height of the main groove.

[0010] Furthermore, the slag blocking device used in front of the blast furnace includes two slag blocking plates, which are arranged at a certain angle to each other in the main groove in an inverted V shape.

[0011] Furthermore, the middle portion of the slag blocking plate protrudes toward the direction in which the molten iron flows.

[0012] Furthermore, the protrusion in the middle of the slag blocking plate is biased toward the lower side.

[0013] Furthermore, the slag blocking plate includes a middle rib and side ribs, the side ribs are arranged at the outermost sides of the slag blocking plate, the middle ribs are arranged in the middle of the side ribs, and a gap is formed between the side ribs and the middle ribs.

[0014] Furthermore, the slag blocking device used in front of the blast furnace is wrapped with refractory material.

[0015] The utility model provides a slag blocking device for the front of a blast furnace. The slag blocking plate blocks large pieces of slag in the main groove so that the large pieces of slag can fully contact with molten iron, and the large pieces of slag have sufficient time to melt before entering the slag groove to reduce the volume, thereby reducing the occurrence of accidents and allowing production to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a front schematic view of a slag blocking device for use in front of a blast furnace according to a first embodiment of the utility model.

[0017] Figure 2 Shown Figure 1 Schematic diagram of the application of the illustrated embodiment.

[0018] Figure 3 Shown is a side schematic view of a slag blocking device for use in front of a blast furnace according to a second embodiment of the utility model.

[0019] Figure 4 Shown is a side schematic view of a slag blocking device for use in front of a blast furnace according to a third embodiment of the utility model.

[0020] Reference numerals:

[0021] 100: Used as slag blocking device in front of blast furnace;

[0022] 1: slag retaining plate; 11: side rib; 12: middle rib; 13: gap; 2: connecting part; 21: connecting hole; 3: main groove. DETAILED DESCRIPTION

[0023] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0024] Figure 1Shown is a front schematic view of a slag blocking device for use in front of a blast furnace according to a first embodiment of the utility model. Figure 2 Shown Figure 1 Schematic diagram of the application of the illustrated embodiment. Figure 3 Shown is a side schematic view of a slag blocking device for use in front of a blast furnace according to a second embodiment of the utility model. Figure 4 Shown is a side schematic view of a slag blocking device for use in front of a blast furnace according to a third embodiment of the utility model.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a slag blocking device 100 for use in front of a blast furnace, comprising: a slag blocking plate 1, on which a gap 13 or a hole is provided, and the slag blocking plate 1 is arranged in a main groove 3 to block large pieces of slag; and a connecting part 2, which is arranged on the top of the slag blocking plate 1 and on which a connecting hole 21 is provided.

[0026] like Figure 2 As shown, the slag stopper 1 is placed in the main groove 3, and the molten iron passes through the gap 13, and the slag stopper 1 blocks large pieces of slag. The connecting portion 2 and the connecting hole 21 are used for hanging or fixing. Further, the width of the slag stopper 1 is smaller than the width of the main groove 3, and the height of the slag stopper 1 is greater than the height of the main groove 3, so that the slag stopper 1 can effectively block large pieces of slag. At the same time, if the lower part of the slag stopper 1 is damaged, the slag stopper 1 only needs to be placed further down.

[0027] Slag generally floats on the surface of molten iron. After the slag baffle 1 blocks the large pieces of slag, the contact time between molten iron and slag increases, and the molten iron will overflow the slag, causing the slag to melt further to reduce its volume, thereby reducing the impact on subsequent slag flushing and granulation, and avoiding the risk of slag flushing blockage and explosion during granulation.

[0028] exist Figure 1 and Figure 2 In the illustrated embodiment, the slag blocking plate 1 includes a middle rib 12 and side ribs 11, the side ribs 11 are arranged at the outermost side of the slag blocking plate 1, the middle rib 12 is arranged between the two side ribs 11, and a gap 13 is formed between the side ribs 11 and the middle rib 12. As mentioned above, the slag blocking plate 1 can be provided with holes as long as the purpose of blocking large pieces of slag can be achieved.

[0029] In order to extend the service life, the slag retaining device used in front of the blast furnace can be wrapped with refractory material or made of refractory material.

[0030] Figure 3 FIG. 2 is a side view of a slag blocking device for a blast furnace according to a second embodiment of the present invention. Figure 3As shown, the slag blocking device used in front of the blast furnace includes two slag blocking plates 1, which are arranged at a certain angle to each other in the main groove 3 in an inverted V shape. The purpose of doing so is that the two slag blocking plates 1 can support each other, so that the slag blocking device can be placed in the main groove 3 in a relatively stable manner, reducing the stress on the connecting portion 2 and the connecting hole 21. At the same time, the two slag blocking plates can further increase the time for the slag to contact and melt with the molten iron, and further enhance the treatment effect of large pieces of slag.

[0031] Figure 4 FIG. 2 is a side view of a slag blocking device for a blast furnace according to a third embodiment of the present invention. Figure 4 As shown, the middle part of the slag retaining plate 1 is raised in the direction of the flow of molten iron. Generally, slag floats on the surface of molten iron. By setting the middle part of the slag retaining plate 1 to be raised in the direction of the flow of molten iron, when the slag is blocked by the slag retaining plate 1, the slag is concentrated toward the raised part, and the molten iron flows through the two sides of the raised part, thereby increasing the contact area between the slag and the molten iron, which is beneficial to the melting of the slag. Figure 4 As shown, the bulge in the middle of the slag retaining plate 1 is on the lower side, that is, the bulge extends obliquely downward; when the slag is blocked by the bulge, it is conducive to the slag to accumulate downward, so as to better contact with the molten iron. Because the slag originally floats on the surface of the molten iron, the slag accumulation downward makes it easier for the molten iron to submerge the slag.

[0032] The utility model provides a slag blocking device for the front of a blast furnace. The slag blocking plate blocks large pieces of slag in the main groove so that the large pieces of slag can fully contact with molten iron, and the large pieces of slag have sufficient time to melt before entering the slag groove to reduce the volume, thereby reducing the occurrence of accidents and allowing production to proceed smoothly.

[0033] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A slag blocking device for a blast furnace, characterized in that: include: A slag blocking plate, wherein the slag blocking plate is provided with gaps or holes, and the slag blocking plate is arranged in the main groove to block large pieces of slag; as well as A connecting portion is arranged on the top of the slag blocking plate, and a connecting hole is arranged on the connecting portion.

2. The slag blocking device for the front of a blast furnace according to claim 1, characterized in that: The width of the slag blocking plate is smaller than the width of the main groove, and the height of the slag blocking plate is greater than the height of the main groove.

3. The slag blocking device for the front of a blast furnace according to claim 1, characterized in that: The utility model comprises two slag retaining plates, which are arranged in the main groove in an inverted V shape at a certain angle to each other.

4. The slag blocking device for the front of a blast furnace according to claim 1, characterized in that: The middle part of the slag blocking plate protrudes toward the direction of molten iron flow.

5. The slag blocking device for the front of a blast furnace according to claim 4, characterized in that: The protrusion in the middle of the slag blocking plate is biased toward the lower side.

6. The slag blocking device for the front of a blast furnace according to claim 1, characterized in that: The slag blocking plate comprises a middle rib and side ribs, wherein the side ribs are arranged at the outermost sides of the slag blocking plate, and the middle ribs are arranged in the middle of the side ribs, and a gap is formed between the side ribs and the middle ribs.

7. The slag blocking device for the front of a blast furnace according to claim 1, characterized in that: The slag blocking device used in front of a blast furnace is wrapped with refractory material.

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