Ladle castable

A ladle pouring and microporous technology, which is applied in the field of ladle refractory materials, can solve problems affecting the service life of ladles and general performance, and achieve the effects of increasing thermal shock resistance, high temperature performance, and service life

Active Publication Date: 2015-09-23
徐州国隆电力配件铸造有限公司
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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 ladle castable, the use part is the direct inner lining of the ladle and molten steel, wherein the weight percentage of each component is: the weight percentage of each component is: 15% of sintered microporous aluminum spinel 12-8mm, sintered microporous Aluminum spinel 8-5mm is 14%, sintered microporous aluminum spinel 5-3mm is 15%, sintered microporous aluminum spinel 3-1mm is 13%, sintered microporous aluminum spinel≤1mm is 30% %, chromium dicarbide 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 evenly to obtain the ladle castable.

[0014] Experimental tests were carried out with the ladle castable formula of Example 1: adding water accounting for 3-6 wt% of the above formula, the test performance indicators were as...

Embodiment 2

[0016] A ladle castable, wherein the weight percentage of each component is: the weight percentage of each component is: 14% for sintered microporous aluminum spinel 12-8mm, 15% for sintered microporous aluminum spinel 8-5mm, and 15% for sintered microporous aluminum spinel Microporous aluminum spinel 5-3mm is 15%, sintered microporous aluminum spinel 3-1mm is 12%, sintered microporous aluminum spinel≤1mm is 30%, modified magnesia-calcium sand≤1mm is 2% , chromium dicarbide powder 1%, composite gel powder 5%, hydrated alumina micropowder 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 evenly to obtain the ladle castable.

[0017] Experimental testing was carried out with the ladle castable formula of Example 2: adding water accounting for 3-6 wt% of the above formula, the test performance indic...

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Abstract

The invention relates to ladle castable, particularly to castable for ladle linings or working layers. In order to solve the technical problems, hte invention provides the ladle castable used at the direct lining where a ladle is in direct contact with molten steel; the ladle castable comprises the following components in percentage by weight: 8-20% of sintered microporous aluminum spinel of 12-8mm, 11-15% of sintered microporous aluminum spinel of 8-5mm, 12-15% of sintered microporous aluminum spinel of 5-3mm, 10-15% of sintered microporous aluminum spinel of 3-1mm, 30-35% of sintered microporous aluminum spinel smaller than or equal to 1mm, 0-15% of modified magnesia-calcium clinker smaller than or equal to 1mm, 1% of chromium carbide powder, 3-5% of compound gel powder, 1% of hydrated alumina micropowder, 1% of nacrite powder, 0.5% of bismuth germanate powder, 3-5% of modified pure calcium aluminate cement, 0.1% of C7H10N2O2S, 0.1% of C2H14Na2O6S2, and 0.05% of 4-morpholineethanesulfonic acid. Through the adoption of the ladle castable disclosed by the invention, the reacting degree of the material of the ladle lining and slags can be lowered; the high-temperature performance and the slag corrosion resistance of slag-resistance ladle products are improved; the thermal shock resistance of ladles is greatly improved; the service life of whole casting ladles is effectively prolonged, and compared with conventional ladles of the same type, the service life of ladles using the castable disclosed by the invention is prolonged by 30% and more.

Description

technical field [0001] The invention relates to a steel ladle refractory material, in particular to a steel ladle liner castable. Background technique [0002] The refractory material in direct contact with the molten steel in the ladle is called the working layer of the ladle. 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. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a ladle castable, which can reduce the degree of reaction between the ladle lining material and molten slag, improve its slag resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 张婷
Owner 徐州国隆电力配件铸造有限公司
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