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Steel ladle and steel ladle building method

A ladle and masonry technology, which is applied in casting molten material containers, metal processing equipment, casting equipment, etc., can solve the problems of serious ladle sticking and slag, achieve less damage, avoid transverse cracks, and improve product quality.

Active Publication Date: 2021-06-18
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]In order to solve the serious technical problem of ladle sticking slag in the existing ladle, the present invention provides a ladle, which effectively solves the problem of ladle sticking by improving the structure and material of the ladle. The serious technical problem of slag avoids the damage problem caused in the process of handling the ladle edge, reduces the safety risk in the production process, and improves the product quality

Method used

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Experimental program
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Effect test

preparation example Construction

[0047] The particle size of the raw materials for the preparation of the aluminum-magnesium spinel castable is as follows:

[0048] Corundum powder: 200 mesh, spinel powder: 200 mesh, magnesia powder: 200 mesh, d-Al 2 o 3 Micropowder: 1200 mesh, SiO 2 Ultrafine powder: 0.1um-0.3um, 97 fused magnesia: 0-1mm, white corundum: 0-3mm, 88 super bauxite: 3-8mm.

[0049]The embodiment of the present invention uses corundum powder, spinel powder, magnesia powder, α-Al 2 o 3 Micropowder and SiO 2 Ultrafine powder is used as the matrix material. When the refractory aggregate and the matrix material are matched, the rigorous and scientific formula design is carried out. At high temperature, the matrix part reacts in situ to form MA spinel phase. The volume expansion at this time improves the thermal shock stability of the castable. At the same time, SiO 2 The liquid phase formed by the ultra-fine powder additive increases the mechanical elasticity of the castable, which can avoid c...

Embodiment 1

[0065] Such as figure 1 , 2 As shown, the embodiment of the present invention is a steel ladle, the middle and lower part of the inner lining of the steel ladle 1 is refractory brick 2, the upper edge of the inner lining of the steel ladle 1 is aluminum-magnesium spinel castable 3, and the refractory brick 2 The special-shaped brick 4 is used to connect with the aluminum-magnesium spinel castable 3, and the special-shaped brick 4 includes a bottom surface 41, a top surface 42 and four side surfaces 43, and the bottom surface 41 and the top surface 42 are both Rectangular surface or trapezoidal surface or fan-shaped surface, the bottom surface 41 is a horizontal surface, the top surface 42 is an inclined surface, and the height of the side 43 near the molten steel side along the vertical direction is greater than that of the side 43 near the steel shell side.

[0066] Further, the aluminum-magnesium spinel castable 3 and the steel shell of the ladle 1 are fixed by anchor hooks...

Embodiment 2

[0069] A ladle masonry method, comprising the steps of:

[0070] (1) Preparation of Al-Mg spinel castable:

[0071] Raw material preparation: corundum powder 200 mesh: 10%, spinel powder 200 mesh: 3.5%, magnesia powder 200 mesh: 5%, α-Al 2 o 3 Micropowder 1200 mesh: 3%, SiO 2 Ultrafine powder 0.1um-0.3um: 2%, other materials 4.5%, 97 fused magnesia 2%, white corundum 23%, 88 super bauxite 47%.

[0072] Among them, corundum powder: 200 mesh, spinel powder: 200 mesh, magnesia powder: 200 mesh, α-Al 2 o 3 Micropowder: 1200 mesh, SiO 2 Ultrafine powder: 0.1um-0.3um, 97 fused magnesia: 0-1mm, white corundum: 0-3mm, 88 super bauxite: 3-8mm.

[0073] Corundum powder, spinel powder, magnesia powder, α-Al 2 o 3 Micropowder and SiO 2 The superfine powder is pre-mixed for 3-5 minutes, and the mixed powder is made into the silo, and the 88 super-grade bauxite, white corundum aggregate, and fused magnesia aggregate are sequentially arranged with the automatic batching line, and th...

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Abstract

The invention provides a steel ladle, and belongs to the technical field of steel ladles. According to the steel ladle, refractory bricks are arranged on the lower middle portion of a steel ladle lining, aluminum-magnesium spinel castable is arranged on the ladle edge of the upper portion of the steel ladle lining, the refractory bricks and the aluminum-magnesium spinel castable are connected through special-shaped bricks, each special-shaped brick comprises a bottom face, a top face and four side faces, the bottom faces and the top faces are both rectangular faces or trapezoid faces or sector faces, the bottom faces are horizontal faces, the top faces are inclined faces, and the height of the side faces close to the molten steel side in the vertical direction is larger than that of the side faces close to the steel shell side. By improving the structure and the material of the steel ladle, the technical problem of serious slag bonding of the steel ladle is effectively solved, the problem of damage generated in the process of treating the edge of the steel ladle is avoided, the safety risk in the production process is reduced, and the product quality is improved. The invention further provides a steel ladle building method.

Description

technical field [0001] The invention belongs to the technical field of steel ladles, and relates to a steel ladle and a ladle masonry method. Background technique [0002] In the steelmaking production process, ladles are generally used as containers for containing molten steel. During the use of the ladle, based on considerations such as heat preservation and removal of inclusions, the molten steel will be covered with a layer of slag. After the ladle is poured, in order to facilitate the next furnace to continue to fill the molten steel, the slag turning operation is generally carried out. Due to the interaction between the steel slag and the interaction between the slag and the ladle, it will lead to serious slag sticking along the side of the ladle when the ladle is turned over, which will lead to a decrease in the cleanliness of the ladle, affect the quality of molten steel, affect the amount of steel tapping, and cause ladle lifting There are a series of problems suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/02
CPCB22D41/02B22D41/023
Inventor 赵丽明贾祥超张宝富黄桂斌安永超刘珍童张延宾孟繁雪
Owner BEIJING SHOUGANG CO LTD
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