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A kind of repair material for ladle lining and preparation method thereof

A technology for repairing material and ladle lining, which is applied in the field of repairing material for ladle lining and its preparation, can solve the problems of weak bonding performance, poor smearing performance, poor slag corrosion resistance, etc., so as to improve construction performance and ensure flow characteristics. , Improve the effect of repair performance

Active Publication Date: 2016-11-30
河南海格迩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, at present, the repair materials for carbon-free ladle working linings of large domestic steel plants have always had the defects of weak bonding performance, poor smearing performance, and poor slag erosion resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A repairing material for ladle lining, consisting of dry material and added water. The dry material is calculated by weight percentage and consists of the following components: 38% corundum, 45% sintered magnesia, 4% sintering aid, 4% binder, Clay 5% and subunit cellulose 2%. After weighing the above-mentioned ingredients in proportion, put them into a mixer and mix them evenly, then add 2% sodium tripolyphosphate to the mixed mixture and mix them evenly again. When using, add water accounting for 12% of its weight to the dry material, stir for 3 minutes and put it into use.

Embodiment 2

[0021] A repair material for ladle lining, composed of dry material and added water, the dry material is calculated by weight percentage, and consists of the following components: 76% corundum, 12% sintered magnesia, 4% sintering aid, 4% binder, Clay 1%, subunit cellulose 2%, after weighing the above ingredients in proportion, put them into a mixer and mix them evenly, then add 1% sodium tripolyphosphate to the mixed mixture and mix them evenly again, discharge, pack When the bag is used, add 16% water to the dry material, stir for 4 minutes and put it into use.

Embodiment 3

[0023] A repairing material for ladle lining, consisting of dry material and added water. The dry material is calculated by weight percentage and consists of the following components: 56% corundum, 27% sintered magnesia, 12% sintering aid, 2% binder, 1% clay, 1% subunit cellulose, after weighing the above ingredients in proportion, put them into a mixer and mix them evenly, then add 1% sodium tripolyphosphate to the mixed mixture and mix evenly again, discharge, pack When the bag is used, add 14% water to the dry material, stir for 5 minutes and put it into use.

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PUM

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Abstract

A repairing material for ladle lining and a preparation method thereof, comprising dry material and added water, the dry material is composed of the following components by weight percentage: 38-76% corundum, 12-45% sintered magnesia, sintering aid 4~12%, binder 2~4%, clay 1~5%, sodium tripolyphosphate 1~4%, subunit cellulose 1~2%, the amount of water added is 12~16% of the weight of dry material, Put corundum, sintered magnesia, sintering aid, binder, clay and subunit cellulose into the mixer according to the above ratio and mix evenly, then add sodium tripolyphosphate into the mixture and mix evenly to make dry material and package; The plasticizer and bonding agent in the invention make the repair material have good adhesion performance, and react with the old lining at the same time at high temperature, increasing the bonding strength, prolonging the service life of the ladle and reducing investment.

Description

technical field [0001] The invention relates to the field of unshaped refractory materials, in particular to a repairing material for ladle lining and a preparation method thereof. Background technique [0002] With the continuous improvement of users' requirements for steel quality. During the smelting process, steelworks must further control the cleanliness of molten steel, especially for low-carbon and ultra-low-carbon steels, and at the same time avoid carbon increase in the production process to the greatest extent, which puts forward more stringent requirements for steel containers for smelting . At present, many large steel mills in China have begun to use carbon-free ladle working lining, that is, using carbon-free prefabricated blocks of steel ladle as ladle lining, and its average service life is more than 200 times. [0003] Ladle carbon-free prefabricated blocks are generally made of corundum spinel. During use, due to their poor thermal shock resistance and ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 彭小品邵淑英郜桥刚张伟杨爱华
Owner 河南海格迩新材料有限公司
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