CN220560405U

CN220560405U - Ladle

Info

Publication number: CN220560405U
Application number: CN202322106749.1U
Authority: CN
Inventors: 刘诚; 唐龙燕; 龙武斌
Original assignee: SHANGHAI BAOMING REFRACTORY MATERIALS CO Ltd
Current assignee: SHANGHAI BAOMING REFRACTORY MATERIALS CO Ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-03-08
Anticipated expiration: 2033-08-07

Abstract

The utility model discloses a steel ladle, which comprises a steel shell, a permanent pouring material layer positioned above the bottom of the steel shell, a steel ladle bottom refractory prefabricated brick positioned above the permanent pouring material layer and resisting molten steel scouring, and a working pouring material layer positioned above the permanent pouring material layer and surrounding the steel ladle bottom refractory prefabricated brick, and is characterized in that: and a safety warning prefabricated brick layer is further arranged between the steel ladle bottom refractory prefabricated brick and the permanent casting material layer, wherein corundum fire clay layers for bonding and warning are arranged at the masonry joint between each prefabricated brick in the safety warning prefabricated brick layer and the joint between the safety warning prefabricated brick layer and the steel ladle bottom refractory prefabricated brick.

Description

Ladle

Technical Field

The present utility model relates to steelmaking equipment, and more particularly to a ladle.

Background

The steel tapping hole of the converter is provided with a drop height of about 7 meters to the bottom of the steel ladle, the impact area at the bottom of the steel ladle is the part with the most serious molten steel flushing, the impact area is required to bear the impact of molten steel with the temperature of about 1650 ℃ from the converter, and the thickness of refractory materials in the impact area is gradually reduced and the safety risk is also gradually increased along with the increase of the using times of the steel ladle.

At present, a steel ladle generally comprises a steel shell, a permanent pouring material layer positioned above the bottom of the steel shell, a steel ladle bottom refractory prefabricated brick positioned above the permanent pouring material layer and used for resisting molten steel scouring, and a working pouring material layer positioned above the permanent pouring material layer and surrounding the steel ladle bottom refractory prefabricated brick, wherein the steel ladle bottom refractory prefabricated brick is generally a whole refractory prefabricated plate which can be thinner and thinner along with the scouring and melting loss of molten steel, and even causes molten steel seepage and leakage of an impact area part, so that the whole steel ladle is scrapped. Because the integral refractory precast slab is arranged in the impact area at the bottom of the steel ladle, the lower part of the precast slab in the impact area is connected with the permanent layer of the steel ladle, and the precast slab is gradually melted and damaged in the use process of the steel ladle, and the thickness of the refractory is thinned. Because the integral precast slab has no obvious warning sign, ladle judgment personnel cannot accurately judge the residual thickness of the refractory precast bricks in the impact area of the ladle bottom, and the judgment errors are sometimes unavoidable completely by experience, so that molten steel is leaked and leaked at the impact area part in the use process of the ladle, and even the whole ladle is scrapped.

Therefore, how to accurately and timely find the risk of the refractory material thinning caused by scouring and melting loss of the refractory material precast brick in the ladle bottom impact area and how to avoid the seepage and the steel leakage of the ladle bottom impact area are a big problem of ladle steelmaking.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a steel ladle bottom refractory structure, which adopts the following technical scheme: the utility model provides a ladle, it includes the steel shell, is located the permanent pouring layer of steel shell bottom top, is located the ladle bottom refractory prefabricated brick that the molten steel is erodeed in permanent pouring layer top, and is located the work pouring layer that the ladle bottom refractory prefabricated brick of encircleing set up of permanent pouring layer top, its characterized in that: and a safety warning prefabricated brick layer is further arranged between the steel ladle bottom refractory prefabricated brick and the permanent casting material layer, wherein corundum fire clay layers for bonding and warning are arranged at the masonry joint between each prefabricated brick in the safety warning prefabricated brick layer and the joint between the safety warning prefabricated brick layer and the steel ladle bottom refractory prefabricated brick.

The utility model is further characterized in that:

the whole safety warning prefabricated brick layer is rectangular, and the periphery of the safety warning prefabricated brick layer exceeds 50-100mm of the steel ladle bottom refractory prefabricated brick; and the two long sides of the safety warning prefabricated brick layer are in concave-convex staggered design.

Each prefabricated brick in the safety warning prefabricated brick layer is 60-100mm high.

The masonry joint between each prefabricated brick in the safety warning prefabricated brick layer is smaller than 2 mm.

The beneficial effects of the utility model are as follows:

because the safety warning precast brick layer is also arranged between the ladle bottom refractory precast brick and the permanent casting material layer, the joint between each precast brick in the safety warning precast brick layer and the joint between the safety warning precast brick layer and the ladle bottom refractory precast brick are both provided with corundum fire clay layers for bonding and warning. The corundum fireclay layer can send brighter luminance than peripheral refractory materials at high temperature, ladle judgment personnel can judge the situation of ladle bottom refractory material structure more intuitively, conveniently and rapidly, when the ladle bottom refractory material structure melts down to the junction between the prefabricated brick layer of safety warning and the prefabricated brick of ladle bottom refractory material, the ladle is equivalent to pulling up one warning line, when melting down to the prefabricated brick layer of safety warning, the ladle judgment personnel is favorable to pulling up the second warning line, the ladle judgment personnel can judge the situation of ladle bottom refractory material more intuitively, conveniently and rapidly, and safer operation of the ladle can be ensured. The thickness of the prefabricated brick of the lower safety layer is about 60-100mm, so that molten steel is not leaked to the impact area part caused by a vertical horse, ladle judgment personnel can arrange maintenance personnel to maintain the ladle in a line in time, safer operation of the ladle can be ensured, and the service life of the ladle can be effectively prolonged.

Drawings

FIG. 1 is a cross-sectional view of a structure in accordance with one embodiment of the present utility model;

fig. 2 is a top view of the partial structure of fig. 1.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 2, a ladle comprising a steel shell 6, a permanent castable layer 1 above the bottom of the steel shell, a ladle bottom refractory precast brick 2 above the permanent castable layer for resisting molten steel scouring, and a working castable layer 3 above the permanent castable layer and surrounding the ladle bottom refractory precast brick, wherein: a safety warning precast brick layer 4 is further arranged between the ladle bottom refractory precast brick 2 and the permanent casting material layer 1, wherein corundum fire clay layers 5 used for bonding and warning are arranged at the masonry joint between each precast brick in the safety warning precast brick layer 4 and at the joint between the safety warning precast brick layer and the ladle bottom refractory precast brick.

In the embodiment, the whole safety warning prefabricated brick layer 4 is rectangular, and the periphery of the safety warning prefabricated brick layer exceeds 50-100mm of the steel ladle bottom refractory prefabricated brick; and the two long sides of the safety warning prefabricated brick layer are in a concave-convex staggered design, so that when pouring the castable of the steel ladle working layer, the joint surface of the castable and the safety warning prefabricated brick layer is of a canine tooth staggered structure, the combination of the working layer castable layer and the safety layer is facilitated, and straight slits and cold steel infiltration are avoided.

In addition, in the embodiment, the height of each prefabricated brick in the safety warning prefabricated brick layer 4 is 60-100mm; the masonry joint between each prefabricated brick in the safety warning prefabricated brick layer 4 is smaller than 2 mm.

Because the safety warning precast brick layer 4 is also arranged between the ladle bottom refractory precast brick 2 and the permanent casting material layer 1, the joint between each precast brick in the safety warning precast brick layer 4 and the joint between the safety warning precast brick layer and the ladle bottom refractory precast brick are both provided with the corundum fire clay layer 5 for bonding and warning. The corundum fireclay layer 5 can send brighter luminance than peripheral refractory materials at high temperature, ladle judgment personnel can more intuitively, conveniently and rapidly judge the condition of the ladle bottom refractory material structure, when the ladle bottom refractory material structure is fused to the joint between the safety warning prefabricated brick layer 4 and the ladle bottom refractory material prefabricated brick 2, the fused ladle is equivalent to pulling up one warning line, and when the fused ladle is fused to the safety warning prefabricated brick layer 4, the fused ladle is equivalent to pulling up a second warning line, thereby being beneficial to the ladle judgment personnel to judge the condition of the ladle bottom refractory material more intuitively, conveniently and rapidly and ensuring safer operation of the ladle. Because the precast bricks in the lower safety warning precast brick layer 4 have the thickness of about 60-100mm, molten steel leakage at the impact area part caused by standing horses is avoided, ladle judgment staff can arrange maintenance staff to maintain the ladle offline in time, safer operation of the ladle can be ensured, and the service life of the ladle can be effectively prolonged.

While the technical content and features of the present utility model have been disclosed above, it will be understood that various changes and modifications to the above-described structure, including combinations of technical features individually disclosed or claimed herein, and other combinations of these features as apparent to those skilled in the art may be made under the inventive concept of the present utility model. Such variations and/or combinations fall within the technical field to which the utility model relates and fall within the scope of the claims of the utility model.

Claims

1. The utility model provides a ladle, it includes the steel shell, is located the permanent pouring layer of steel shell bottom top, is located the ladle bottom refractory prefabricated brick that the molten steel is erodeed in permanent pouring layer top, and is located the work pouring layer that the ladle bottom refractory prefabricated brick of encircleing set up of permanent pouring layer top, its characterized in that: and a safety warning prefabricated brick layer is further arranged between the steel ladle bottom refractory prefabricated brick and the permanent casting material layer, wherein corundum fire clay layers for bonding and warning are arranged at the masonry joint between each prefabricated brick in the safety warning prefabricated brick layer and the joint between the safety warning prefabricated brick layer and the steel ladle bottom refractory prefabricated brick.

2. The ladle as recited in claim 1, wherein: the whole safety warning prefabricated brick layer is rectangular, and the periphery of the safety warning prefabricated brick layer exceeds 50-100mm of the steel ladle bottom refractory prefabricated brick; and the two long sides of the safety warning prefabricated brick layer are in concave-convex staggered design.

3. The ladle as claimed in claim 1 or claim 2, wherein: each prefabricated brick in the safety warning prefabricated brick layer is 60-100mm high.

4. A ladle as claimed in claim 3, wherein: the masonry joint between each prefabricated brick in the safety warning prefabricated brick layer is smaller than 2 mm.