Steel ladle bottom masonry structure capable of reducing steel ladle pouring residue

Abstract

The utility model provides a steel ladle bottom masonry structure capable of reducing steel ladle pouring residue, which comprises a permanent layer poured at the bottom and on the side wall of a steel ladle, an air-permeable brick cup located on the left side of the ladle bottom and a nozzle brick cup located on the right side of the ladle bottom, and a plane area is arranged at the bottom of the steel ladle and located on one side of the nozzle brick cup. A slope layer which gradually rises from the edge of the linear brick group to the edge of the steel ladle is arranged in the rest area of the bottom of the steel ladle, and a slope area is formed on the slope layer. According to the steel ladle bottom masonry structure, the plane area is arranged on the nozzle seating brick part, the slope areas are arranged on other areas, and the slope areas are slightly higher than the plane area, so that molten steel can flow out of the nozzle conveniently. And compared with the traditional planar surface bottom, the injection residue of the steel ladle can be reduced by more than 2 tons per ladle under the condition of the same steel ladle injection residue depth, so that the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ladle masonry technical field, especially relates to a kind of ladle bottom masonry structure for reducing ladle surplus. BACKGROUND

[0002] Ladle is the container of molten steel, and also the component of refining equipment, mainly used in steelmaking plant, foundry plant furnace front to accept molten steel, to refine and handle molten steel and pour the link. The bottom masonry method of traditional ladle is as follows: according to the design requirements, along the wall of ladle, paste refractory insulation board, set up mould, cast ladle bottom permanent layer castable and vibrate and compact, thickness meets the construction design requirements, after 2 hours, the surface of permanent layer castable is leveled, after 8 hours, remove the mould, then start to masonry ladle bottom, according to the design requirements, reserve permanent layer pouring distance, install nozzle seat brick and air passage seat brick, masonry ladle bottom refractory brick, then use castable to fill seat brick and ladle bottom refractory brick reserved expansion joint, permanent layer castable is poured and vibrated and compacted. Finally, level the ladle bottom, and according to the design requirements, reserve permanent layer pouring distance, then start to masonry ladle wall magnesia carbon brick. When the masonry of ladle bottom is completed, the ladle bottom is basically horizontal.

[0003] In order to avoid the inclusion of steel slag, control the content of inclusions in steel, high-quality steel such as bearing steel, cord steel and bead wire has higher requirements for the remaining steel of ladle. When the ladle masonry by traditional method produces high-quality steel, the remaining steel amount needs to be more than 6 tons to avoid the inclusion of steel slag, and the remaining steel needs to be returned to the converter for reblowing, which increases the blowing loss of iron and alloy, reduces the production efficiency and increases the production cost. SUMMARY

[0004] The utility model discloses to the technical problem of traditional ladle producing high-quality steel, the remaining steel amount is more, and the production cost is high, and a new type of ladle bottom masonry structure for reducing ladle surplus is provided.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] A kind of ladle bottom masonry structure for reducing ladle surplus, including permanent layer being poured in the bottom and side wall of ladle, and air passage seat brick being located at the left side of ladle bottom and nozzle seat brick being located at the right side of ladle bottom, the bottom of ladle is provided with the planar area formed by the bottom brick of 300mm height in sequence masonry in the side of nozzle seat brick, the area of planar area is provided with the straight line brick group formed by the bottom brick of 350mm height masonry, the rest area of ladle bottom is provided with the inclined layer gradually rising from the edge of straight line brick group to the edge of ladle, the inclined layer is provided with the inclined surface area formed by the bottom brick of 350mm height in sequence masonry, and the side wall of ladle is further provided with ladle wall brick.

[0007] As a preferred, the slope layer inclination angle is 2-5 degrees.

[0008] As a preferred, the slope layer inclination angle is 3 degrees.

[0009] As a preferred, the inclined surface area is twice the area of the plane area.

[0010] As a preferred, the slope layer is cast by semi-dry magnesium filler.

[0011] As a preferred, the gap between the backing bricks and the wall bricks is filled with magnesium self-flowing material.

[0012] As a preferred, the backing bricks of the inclined surface area are increased by 5mm per column in the direction of the ladle edge.

[0013] As a preferred, the air permeable seat brick is provided with two pieces.

[0014] Compared with the prior art, the advantages and positive effects of the utility model lie in that:

[0015] The ladle backing masonry structure of the utility model sets a plane area in the nozzle seat brick part, sets an inclined surface area in other areas, and the inclined surface area is slightly higher than the plane area, so that the molten steel can flow out of the nozzle. Compared with the traditional plane backing, the ladle surplus can be reduced by more than 2 tons per ladle under the same ladle surplus depth, the production efficiency is improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a bottom structure schematic view of the ladle backing masonry structure of the utility model;

[0017] Figure 2 It is an internal structure schematic view of the ladle backing masonry structure of the utility model;

[0018] In the above figures: 1, permanent layer; 2, air permeable seat brick; 3, nozzle seat brick; 4, 300mm high backing brick; 5, 350mm high backing brick; 6, plane area; 7, slope layer; 8, inclined surface area; 9, wall brick; 10, magnesium self-flowing material. DETAILED DESCRIPTION

[0019] In order to better understand the utility model, the following will be specifically described in combination with the drawings and examples.

[0020] Example: as Figure 1 , Figure 2As shown, a ladle bottom lining structure for reducing ladle surplus, the bottom and sidewall of the ladle are formed by permanent layer 1 through castable pouring, two air seat bricks 2 and a nozzle seat brick 3 are installed above the permanent layer 1 of the ladle bottom, and the remaining part is lined with ladle bottom bricks to form a high-temperature-resistant protective layer. In this embodiment, the nozzle seat brick 3 is installed on the right side of the ladle bottom, one air seat brick 2 is located on the left side of the ladle bottom, and the other air seat brick 2 is located on the upper part of the middle, forming a right-angled triangle, and the air seat brick 2 located in the middle is located at the right angle.

[0021] The side of the ladle bottom of the nozzle seat brick 3 is lined with 300mm high ladle bottom bricks 4 (300mm*150mm*100mm) to form a vertical linear brick group, and in this embodiment, 10 columns are lined from the left side of the nozzle seat brick 3 to the right edge of the ladle to form a planar area 6. The planar area 6 covers the nozzle seat brick 3, and when pouring molten steel, it is convenient for the molten steel to flow out from the nozzle. The area connected with the planar area 6 is lined with 350mm high ladle bottom bricks 5 (350mm*150mm*100mm) to form the 11th column of linear brick groups, and when the two ends of this column are less than 220mm from the permanent layer 1, 300mm high ladle bottom bricks 4 are lined to reserve space for lining the slag line bricks. The remaining area of the ladle bottom is provided with a slope layer 7 gradually rising from the edge of the linear brick group to the left edge of the ladle, which is formed by pouring semi-dry magnesium filler, and the inclination angle is set to 2-5 degrees, preferably 3 degrees in this embodiment. Thereafter, 350mm*150mm*100mm ladle bottom bricks are lined to form the 12th column and other linear brick groups, and similarly, when the two ends of each column of linear brick groups are less than 220mm from the permanent layer 1, 300mm*150mm*100mm ladle bottom bricks are lined. The ladle bottom bricks in this area are each raised by 5mm in the direction of the edge of the ladle, forming a beveled area 8. The area of the beveled area 8 is about twice the area of the planar area 6. The gaps between the ladle bottom bricks are filled with castable to form a complete ladle bottom protection structure. Thereafter, the ladle wall bricks 9 are lined, and the magnesium self-flowing material 10 is filled in the gap between the ladle bottom bricks and the ladle wall bricks 9 to form a complete high-temperature-resistant structure.

[0022] In this embodiment, the ladle bottom lining structure is provided with a planar area 6 in the nozzle seat brick 3 part and a beveled area 8 in the other area, and the beveled area 8 is slightly higher than the planar area 6, which is convenient for the molten steel to flow out from the nozzle. Compared with the traditional planar ladle bottom, the ladle surplus can be reduced by more than 2 tons per ladle under the same ladle surplus depth (based on the nozzle pouring area plane), which improves production efficiency and reduces production cost.

[0023] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A ladle lining structure for reducing ladle carryover, characterized by: The ladle bottom is provided with a permanent layer cast on the bottom and side wall of the ladle, a gas permeable base brick on the left side of the ladle bottom and a nozzle base brick on the right side of the ladle bottom, the side of the ladle bottom with the nozzle base brick is provided with a planar area formed by the base bricks with a height of 300 mm, the area connected with the planar area is provided with a straight brick group formed by the base bricks with a height of 350 mm, the remaining area of the ladle bottom is provided with a slope layer gradually rising from the edge of the straight brick group to the edge of the ladle, the slope layer is provided with an inclined area formed by the base bricks with a height of 350 mm, and the ladle side wall is further provided with a wall brick.

2. The ladle bottom lining structure for reducing ladle carryover according to claim 1, characterized by: The slope layer has an inclination angle of 2-5 degrees.

3. The ladle bottom lining structure for reducing ladle carryover according to claim 2, characterized by: The slope layer has an inclination angle of 3 degrees.

4. The ladle bottom lining structure for reducing ladle carryover according to claim 1, characterized by: The inclined area has an area twice that of the planar area.

5. The ladle bottom lining structure for reducing ladle carryover according to claim 1, characterized by: The slope layer is cast by semi-dry magnesium filler.

6. The ladle bottom lining structure for reducing ladle yield according to claim 1, characterized by: The gap between the base bricks and the wall bricks is filled with magnesium self-flowing material.

7. The ladle bottom lining structure for reducing ladle carryover according to claim 1, characterized by: The base bricks of the inclined area are each raised by 5 mm from the straight brick group to the edge of the ladle.

8. The ladle bottom lining structure for reducing ladle yield according to claim 1, characterized by: The gas permeable base brick is provided with two pieces.

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