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Preparation method of steel ladle carbon-free precast block

A technology of carbon-free prefabrication and prefabrication, which is applied in the field of metallurgy to achieve the effect of ensuring the baking effect, reducing the baking time and saving energy consumption

Active Publication Date: 2014-12-10
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution provided by the invention is only applicable to the production process of carbon-free ladle prefabricated blocks made of recycled materials

Method used

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  • Preparation method of steel ladle carbon-free precast block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The method provided by the invention is used to prepare a steel ladle carbon-free prefabricated block made of ordinary aluminum-magnesium castable material.

[0036] 1. Raw materials

[0037] The raw material of the ordinary aluminum-magnesium castable material steel ladle carbon-free prefabricated block of the present embodiment comprises the following components by parts by mass: 88 parts of high alumina bauxite (0-15mm), 81 parts; 96 parts of sintered magnesia (0-1mm) , 12 parts; 95 silica powder, 2 parts; α-Al 2 o 3Micro powder (1-3μm), 5 parts, sodium hexametaphosphate (water reducer), 0.2 part; organic fiber (anti-explosion agent), 0.15 part.

[0038] 2. Preparation method

[0039] (1) Premixing: According to the ingredients list requirements, first add all the materials with a particle size of <1mm including fibers and additives in the GW750 mixer, start the mixer and mix for 8 minutes; stop the mixer, add all the materials with a size of 15-1mm, start the mix...

Embodiment 2

[0049] The method provided by the invention is used to prepare the regenerated corundum ladle carbon-free prefabricated block.

[0050] 1. Raw materials

[0051] The raw material of the carbon-free prefabricated block of the regenerated corundum ladle of the present embodiment comprises the following components by mass parts: regenerated corundum material (0-15mm), 70 parts; white corundum (200 mesh), 17 parts; aluminate cement , 7 parts; α-Al 2 o 3 Micro powder (1-3μm), 6 parts, FDN3000 (water reducer), 0.2 part; organic fiber (anti-explosion agent), 0.15 part.

[0052] 2. Preparation method

[0053] (1) According to the requirements of the ingredient list, first add all the materials with a particle size of <1mm including fibers and additives in the GW750 mixer, start the mixer and mix for 8 minutes; stop the mixer, add all the materials with a size of 15-1mm, start the mixer and mix for 4 minutes.

[0054] A total of 20 tons of premixed materials will be produced at one...

Embodiment 3

[0063] The corundum spinel steel ladle carbon-free prefabricated block is prepared by using the method provided by the invention.

[0064] 1. Raw materials:

[0065] The raw materials of the corundum spinel ladle carbon-free prefabricated block of the present embodiment, by mass parts, include the following components: platy corundum (0-15mm), 80 parts; α-Al 2 o 3 Micropowder (1-3μm), 12 parts; ρ-Al 2 o 3 Micropowder, 3.5 parts; 98 fused magnesia (200 mesh), 4 parts; 97 silicon micropowder, 0.6 part; AL200 (water reducer), 0.2 part; organic fiber (anti-explosion agent), 0.15 part.

[0066] 2. Preparation method

[0067] (1) According to the requirements of the ingredient list, first add all the materials with a particle size of <1 mm including fibers and additives in the GW750 mixer, start the mixer and mix for 8 minutes; stop the mixer, and mix 15-8, 8-5, 5-3, 3- Add all the 1mm material, start the mixer and mix for 4 minutes.

[0068] A total of 40 tons of premixed mat...

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Abstract

The invention relates to the field of metallurgical industry and particularly relates to a preparation method of a steel ladle carbon-free precast block. The preparation method of the steel ladle carbon-free precast block comprises the following steps of premixing, dry mixing and wet mixing, vibration molding, mold curing, de-molding curing and baking, wherein the process conditions of each step are improved. Compared with the prior art, the optimal control time of each process step is required, the premixing process is added and thus the stability of the product quality is greatly improved; during the molding, by virtue of the improvement and specification of the dry mixing, wet mixing and vibration, the quality and application effect of the product are greatly improved; in the curing and baking processes, on the basis of ensuring the baking effect, the baking time is reduced, the energy consumption is saved and the like.

Description

technical field [0001] The invention relates to the metallurgical industry, in particular to a method for preparing a steel ladle carbon-free prefabricated block. Background technique [0002] With the development of the steel industry and refining technology, producing high-quality steel has become the goal pursued by every steel company, and the setting of molten steel refining is a necessary means to improve the quality of steel. At present, the refining ladle mostly uses carbon-containing products such as magnesia-carbon bricks and aluminum-magnesia-carbon bricks of different grades, and the problem of carbon addition to molten steel has become increasingly prominent. According to the data collected by a steel factory when smelting ultra-low carbon steel, the carbon-containing lining bricks are eroded and washed by molten steel, and the carbon in the bricks diffuses into the molten steel, which increases the carbon content of the molten steel by an average of 6-7×10 -6 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 任林刘丽张盛晁尚奎吴永生茹明明赵伟刘美荣车晓梅刘全超王晓东赵冉胡玲军
Owner 北京利尔高温材料股份有限公司