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Preparation method of composite intermediate wall for continuous casting tundish

A continuous casting tundish and slag retaining wall technology, applied in foundry equipment, manufacturing tools, metal processing equipment, etc., can solve the waste of slag retaining wall and other problems, to avoid waste, prolong service life, and have excellent slag erosion resistance. Effect

Inactive Publication Date: 2017-01-25
LUOYANG LIER REFRACTORY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This continuous casting tundish slag retaining wall has obvious disadvantages: during the use of the slag retaining wall, since the slag line area is directly contacted by steel slag, the slag line area is eroded by molten steel and slag much faster than the slag retaining wall In the non-slag line area, after the use of the slag retaining wall, the slag line part is severely eroded, while the non-slag line part is in good condition
Therefore, the use of a single material structure for the slag retaining wall is a waste to a certain extent

Method used

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  • Preparation method of composite intermediate wall for continuous casting tundish

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preparation example Construction

[0020] A method for preparing a composite slag retaining wall for a continuous casting tundish, comprising the following steps:

[0021] Step 1. Prepare magnesia castables and olivine castables respectively, wherein the magnesia castables are composed of the following components according to mass percentage: MgO content ≥ 90%, SiO 2 Content ≤ 5%, the balance is water; olivine castables are composed of the following components according to mass percentage: MgO content is about 39%, SiO 2 The content is about 55%, and the balance is water;

[0022] Step 2. Select the mold, lay the mold flat and fix it on the vibrating table, and insert it vertically into the mold with an iron sheet to separate the mold into a slag line area and a non-slag line area, and set aside;

[0023] Step 3: Turn on the vibrating table, add the magnesia castable prepared in step 1 to the slag line area, and add the olivine castable to the non-slag line area under the vibration condition of the vibration f...

Embodiment 1

[0030] A method for preparing a composite slag retaining wall for a continuous casting tundish, comprising the following steps:

[0031] Step 1. Prepare magnesia castables and olivine castables respectively, wherein the magnesia castables are composed of the following components according to mass percentage: MgO content ≥ 90%, SiO 2 Content ≤ 5%, the balance is water; olivine castables are composed of the following components according to mass percentage: MgO content is about 39%, SiO 2 The content is about 55%, the balance is water, and the MgO and SiO in the magnesia castable and olivine castable 2 The particle size of the particles is less than or equal to 15mm. ;

[0032] Step 2. Select the mold, lay the mold flat and fix it on the vibrating table, insert a 3mm thick iron sheet vertically into the mold to separate the mold into a slag line area and a non-slag line area, and set aside;

[0033] Step 3: Turn on the vibrating table, add the magnesia castable prepared in st...

Embodiment 2

[0037] A method for preparing a composite slag retaining wall for a continuous casting tundish, comprising the following steps:

[0038] Step 1. Prepare magnesia castables and olivine castables respectively, wherein the magnesia castables are composed of the following components according to mass percentage: MgO content ≥ 90%, SiO 2 Content ≤ 5%, the balance is water; olivine castables are composed of the following components according to mass percentage: MgO content is about 39%, SiO 2 The content is about 55%, the balance is water, and the MgO and SiO in the magnesia castable and olivine castable 2 The particle size of the particles is less than or equal to 15mm. ;

[0039] Step 2. Select the mold, lay the mold flat and fix it on the vibrating table, insert a 3mm thick iron sheet vertically into the mold to separate the mold into a slag line area and a non-slag line area, and set aside;

[0040] Step 3: Turn on the vibrating table, add the magnesia castable prepared in st...

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Abstract

A preparation method of a composite intermediate wall for a continuous casting tundish comprises the following steps: (1) respectively preparing magnesite castables and olivine castables; (2) selecting a mold, flatly fixing the mold on a vibrating table, and vertically inserting an iron sheet in the mold to separate the mold into a slag-line region and a non-slag-line region; (3) starting the vibrating table, and adding the magnesite castables into the slag-line region and adding the olivine castables in the non-slag-line region under the condition of vibration until the mold is filled with the castables, drawing out the iron sheet, continuing vibrating until the surface of the castables is flat, and stopping vibrating; and (4) taking down the mold, and curing, demolding and baking to obtain the product. The slag-line region and the non-slag-line region respectively use a high-end material forming method and a low-end material forming method, on the promise of guaranteeing the service life of the composite intermediate wall, unnecessary waste is avoided, the cost of the intermediate wall is reduced, and the competitiveness of the product is increased.

Description

technical field [0001] The invention relates to a slag retaining wall for a composite structure tundish, in particular to a method for preparing a composite structure slag retaining wall using high-grade raw materials and low-grade raw materials for the slag line and non-slag line parts respectively. Background technique [0002] The slag retaining wall is a prefabricated part made of refractory castable, which spans the entire width of the tundish, extends from the upper part of the tundish to a certain distance from the bottom of the tundish, and the molten steel can flow under it. The slag retaining wall is an important part of the continuous casting tundish. It can change the flow state of the molten steel in the tundish, prolong the residence time of the molten steel in the tundish, and promote the floating and discharge of the slag inclusions in the molten steel. When in use, molten steel flows from the ladle into the tundish, flows through the flow stabilizer to both ...

Claims

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Application Information

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IPC IPC(8): B22D41/00B28B1/087B28B11/24
CPCB22D41/00B28B1/0873B28B11/24
Inventor 冯隆
Owner LUOYANG LIER REFRACTORY MATERIAL