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Casting material

A castable and microporous technology, applied in the field of refractory materials, can solve problems such as general performance and affecting the service life of ladles, and achieve the effects of improving high temperature performance, increasing thermal shock resistance and reducing the degree of reaction

Active Publication Date: 2015-09-30
湖南宝峰炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the working layer of the ladle generally uses spinel castables, but the performance of the ladle lining is average at present, so it directly affects the service life of the ladle. How to improve the service life of the ladle and improve the performance of the working layer of the ladle is the most important Therefore, the performance improvement of the ladle lining castable becomes the key to prolonging the service life of the ladle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A castable, the use part is the direct lining where the ladle is in contact with the molten steel, wherein the weight percentage of each component is: the weight percentage of each component is: 15% for subwhite corundum 12-8mm, sintered microporous aluminum spinel 8 -5mm is 14%, sintered microporous aluminum spinel 5-3mm is 15%, sintered microporous aluminum spinel 31mm is 13%, sintered microporous aluminum spinel ≤1mm is 30%, two carbide three Chromium powder 1%, composite gel powder 5%, hydrated alumina micropowder 1%, pearl clay powder 1%, bismuth germanate powder 0.5%, modified pure calcium aluminate cement 4.5%, plus C 7 H 10 N 2 O 2 S0.1%, C 21 H 14 Na 2 O 6 S 2 0.1%, 2-morpholineethanesulfonic acid 0.05%. Mix the above ingredients uniformly to obtain ladle castable.

[0014] An experimental test was carried out with a castable formula of Example 1: With the addition of 5wt% of the weight of the above formula, the test performance indicators are as follows: the bulk...

Embodiment 2

[0016] A castable, wherein the weight percentage of each component is: the weight percentage of each component is: subwhite corundum 12-8mm is 14%, sintered microporous aluminum spinel 8-5mm is 15%, sintered microporous aluminum spinel Stone 5—3mm is 15%, sintered microporous aluminum spinel 31mm is 12%, sintered microporous aluminum spinel ≤1mm is 30%, modified magnesia calcium sand ≤1mm is 2%, and three chromium carbides Powder 1%, composite gel powder 5%, hydrated alumina powder 1%, pearl clay powder 1%, bismuth germanate powder 0.5%, modified pure calcium aluminate cement 3.5%, plus C 7 H 10 N 2 O 2 S0.1%, C 21 H 14 Na 2 O 6 S 2 0.1%, 2-morpholineethanesulfonic acid 0.05%. Mix the above ingredients uniformly to obtain ladle castable.

[0017] The castable formula of Example 2 is used for experimental test: water which accounts for 6wt% of the weight of the above formula is added, and the test performance indicators are as follows: the bulk density is 2.9 / cm 3 The flexural str...

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PUM

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Abstract

The invention relates to a casting material, in particular to a casting material for steel ladle linings or working layers, and aims to solve the technical problem of providing a casting material which is used at linings which directly contact molten steel, of steel ladles. The casting material comprises the following components in percentage by weight: 8-20% of sub-white-corundum of 12-8mm, 11-15% of sintered micropore aluminum micropore of 8-5mm, 12-15% of sintered micropore aluminum micropore of 5-3mmmm, 10-15% of sintered micropore aluminum micropore of 3-1mm, 30-35% of sintered micropore aluminum micropore less than or equal to 1mm, 0-5% of modified magnesium calcium sand less than or equal to 1mm, 1% of tri-chromium dicarbide powder, 3-5% of composite gel powder, 1% of hydrated alumina micro powder, 1% of pearl clay powder, 0.5% of germanic acid bismuth powder, 3-5% of modified pure calcium aluminate cement, 0.1% of C7H10N2O2S, 0.1% of C21H14Na2O6S2 and 0.05% of 2-morpholine ethanesulfonic acid. By adopting the casting material, the reaction degree of a lining material of the steel ladle and slag can be reduced, the slag resistance can be improved, the high temperature resistance and the slag corrosion resistance of a steel ladle product can be improved, the thermal shock resistance of the steel ladle can be greatly improved, the service life of an overall cast steel ladle can be effectively prolonged, and the service life of the steel ladle is prolonged for greater than 30% when being compared with that of an ordinary similar product.

Description

Technical field [0001] The invention relates to a refractory material, in particular to a refractory castable used in the working layer of a ladle. Background technique [0002] The refractory material in the ladle that is in direct contact with the molten steel is called the ladle working layer. In the prior art, the ladle working layer generally adopts spinel castable, but the performance of the current ladle lining is average, so it directly affects the service life of the ladle. How to increase the service life of the ladle and improve the performance of the ladle working layer is the most The key, so the performance improvement of the ladle lining castable becomes the key to prolong the service life of the ladle. Summary of the invention [0003] In order to solve the above technical problems, the present invention provides a castable, which can reduce the degree of reaction between the lining material of the ladle and the slag, improve its slag resistance, and increase the ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/77C04B2235/96
Inventor 张婷
Owner 湖南宝峰炉料有限公司