Skimming device

Abstract

The utility model belongs to the technical field of ironmaking, and particularly relates to a skimmer which comprises a lintel, the top of the lintel extends out of a furnace panel, a hanging ring is arranged at the top of the lintel, the top of the lintel is fixed on the furnace panel, a chamfer is arranged at the bottom of the lintel, a rectangular groove is formed in the side face of the lintel, and a baffle is placed in the rectangular groove. The side face of the lintel and the baffle are each provided with a plurality of through holes used for installing connecting ribs. Traditional casting of the skimmer is changed into pre-precast block casting; the angle of the lintel is changed into a chamfer from a right angle, so that the angle of the iron return notch is enlarged, the scouring of molten iron to the skimmer is slowed down, and the service life of the skimmer is prolonged; the iron flux is increased from 18.5 + / -0.5 ten thousand tons to more than 19.5 ten thousand tons at present, so that the service lives of the main channel and the skimmer are prolonged, the use safety of the main channel is ensured, and the use of castable is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ironmaking, and in particular relates to a slag skimmer. Background Art

[0002] With the rapid increase in my country's steel production, the quality improvement of materials required in front of the furnace has become a focus of great concern in the refractory industry. Among them, the slag skimmer is a key equipment for processing slag iron in the blast furnace steelmaking process. The speed of its replacement is directly related to the continuity and stability of blast furnace production.

[0003] At present, the weak links that affect the service life of the main ditch are the iron drop point area and the lintel of the slag skimmer. When the iron passing volume in the main ditch reaches about 100,000 tons, the iron drop point area is repaired by pouring, but the lintel of the slag skimmer cannot be effectively repaired. The erosion of the lintel of the slag skimmer in the later period directly affects the service life of the main ditch. Utility Model Content

[0004] The purpose of the utility model is to provide a skimmer.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a slag skimmer, including a lintel, the top of the lintel extends out of the furnace panel, the top of the lintel is provided with a hanging ring, the top of the lintel is fixed on the furnace panel, the bottom of the lintel is provided with a chamfer, the side of the lintel is provided with a rectangular groove, a baffle is placed in the rectangular groove, and the side of the lintel and the baffle are provided with a plurality of through holes for installing connecting ribs.

[0006] Specifically, the first prefabricated part, the second prefabricated part and the third prefabricated part are installed in the lintel, the bottom of the first prefabricated part is provided with a chamfer matching the bottom of the lintel, and the top of the first prefabricated part is provided with a plurality of evenly distributed concave and convex blocks.

[0007] Specifically, the bottom of the second preform is provided with a plurality of evenly distributed concave and convex blocks, which cooperate with the concave and convex blocks of the first preform, the top of the second preform is provided with a plurality of evenly distributed concave and convex blocks, and the bottom of the third preform is provided with a plurality of evenly distributed concave and convex blocks, which cooperate with the concave and convex blocks at the bottom of the second preform.

[0008] Specifically, the first end of the connecting rib is a pointed end, which is inserted into the first preform, the second preform or the third preform, the second end of the connecting rib is a flat end, and a plurality of barbs are arranged in the middle of the connecting rib.

[0009] The utility model has the following beneficial effects:

[0010] 1) The traditional casting of the skimmer is changed to prefabricated block casting in advance;

[0011] 2) Change the lintel angle from right angle to chamfered, increase the angle of the iron return port, slow down the erosion of the molten iron on the slag skimmer, and extend the service life of the slag skimmer;

[0012] 3) The iron throughput has been increased from 185,000±0.5 million tons to the current 195,000 tons, which has extended the service life of the main ditch and slag skimmer, ensured the safety of the main ditch, and saved the use of castables. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1- lintel; 2- lifting ring; 3- furnace panel; 4- baffle; 5- connecting rib; 6- first prefabricated part; 7- second prefabricated part; 8- third prefabricated part; 9- slag outlet. DETAILED DESCRIPTION

[0015] The utility model will now be further described in detail with reference to the accompanying drawings.

[0016] like Figure 1 As shown, a slag skimmer includes a lintel 1, the top of the lintel 1 extends out of the furnace panel 3, a lifting ring 2 is provided on the top of the lintel 1, the top of the lintel 1 is fixed on the furnace panel 3, a chamfer is provided on the bottom of the lintel 1, a rectangular groove is provided on the side of the lintel 1, a baffle 4 is placed in the rectangular groove, and a plurality of through holes are provided on the side of the lintel 1 and the baffle 4 for installing connecting ribs 5.

[0017] A first prefabricated part 6, a second prefabricated part 7 and a third prefabricated part 8 are installed in the lintel 1. The bottom of the first prefabricated part 6 is provided with a chamfer matching the bottom of the lintel 1, and the top of the first prefabricated part 6 is provided with a plurality of evenly distributed concave and convex blocks.

[0018] The bottom of the second preform 7 is provided with a plurality of evenly distributed concave and convex blocks, which cooperate with the concave and convex blocks of the first preform 6, the top of the second preform 7 is provided with a plurality of evenly distributed concave and convex blocks, and the bottom of the third preform 8 is provided with a plurality of evenly distributed concave and convex blocks, which cooperate with the concave and convex blocks at the bottom of the second preform 7.

[0019] The first end of the connecting rib 5 is a pointed end, which is inserted into the first preform 6, the second preform 7 or the third preform 8. The second end of the connecting rib 5 is a flat end, and a plurality of barbs are provided in the middle of the connecting rib 5.

[0020] The baffle 4 is made of corundum fireclay, which has good compactness and resistance to molten steel impact. The lintel 1 and the furnace panel 3 are fixed by bolt connection or other detachable methods.

[0021] The use method of the utility model is as follows: the lintel 1 is mounted on the furnace panel 3, near the position of the furnace mouth, with a gap at the bottom to allow molten steel to pass through, and the slag floats on the surface of the molten steel and flows out through the slag outlet 9; the first prefabricated part 6, the second prefabricated part 7 and the third prefabricated part 8 are placed in sequence in the lintel 1, a baffle 4 is placed on the side of the lintel 1 and fixed with a connecting rib 5, the first prefabricated part 6, the second prefabricated part 7 and the third prefabricated part 8 are superimposed on each other, the prefabricated parts are divided into three and stacked in sequence, and self-flowing aluminum silicon carbide castable is poured into the gaps on the left and right sides of the prefabricated blocks to seal, and the prefabricated parts can be quickly put into use, thereby improving efficiency. At the same time, only damaged prefabricated parts need to be replaced, saving refractory materials.

[0022] When the first prefabricated part 6, the second prefabricated part 7 and the third prefabricated part 8 need to be replaced, the lintel 1 is lifted by a lifting device to replace the prefabricated parts.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A skimmer, characterized in that: It includes a lintel, the top of which extends out from the furnace panel, a hanging ring is provided on the top of the lintel, the top of the lintel is fixed on the furnace panel, a chamfer is provided on the bottom of the lintel, a rectangular groove is provided on the side of the lintel, a baffle is placed in the rectangular groove, and a plurality of through holes are provided on the side of the lintel and the baffle for installing connecting ribs.

2. A skimmer according to claim 1, characterized in that: The first prefabricated part, the second prefabricated part and the third prefabricated part are installed in the lintel. The bottom of the first prefabricated part is provided with a chamfer matching the bottom of the lintel. The top of the first prefabricated part is provided with a plurality of evenly distributed concave and convex blocks.

3. A skimmer according to claim 2, characterized in that: The bottom of the second preform is provided with a plurality of evenly distributed concave and convex blocks, which match the concave and convex blocks of the first preform, the top of the second preform is provided with a plurality of evenly distributed concave and convex blocks, and the bottom of the third preform is provided with a plurality of evenly distributed concave and convex blocks, which match the concave and convex blocks at the bottom of the second preform.

4. A skimmer according to claim 1, characterized in that: The first end of the connecting rib is a pointed end, which is inserted into the first prefabricated part, the second prefabricated part or the third prefabricated part. The second end of the connecting rib is a flat end, and a plurality of barbs are arranged in the middle of the connecting rib.

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