Working layer castable

A castable and working layer technology, which is applied in the field of refractory castables, can solve problems affecting the service life of ladles and general performance, and achieve the effects of reducing erosion and damage reactions, increasing service life, and increasing thermal shock resistance

Inactive Publication Date: 2017-01-04
张婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, aluminum-silicon castables are generally used for the working layer of the ladle, but at present, the performance of the inner lining of the ladle is average, so it directly affects the service life of the ladle. How to improve the service life of the ladle and improve the ladle The performance of the working layer is the most critical, so 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

[0014] A working layer castable, wherein the weight percentage of each component is: the weight percentage of each component is: 15% of homogenized bauxite 12-8mm, 14% of sintered microporous aluminum spinel 8-5mm, 14% of 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 get the ladle castable.

[0015] Experimental test was carried out with a working layer castable formula of Example 1: adding water accounting for 6wt% of the above formula weight, the test performance indicators were as follows: the bulk density was 2.9 / cm 3 The flexural strength after...

Embodiment 2

[0017] A working layer castable, wherein the weight percentage of each component is: the weight percentage of each component is: 14% of homogenized bauxite 12-8mm, 15% of sintered microporous aluminum spinel 8-5mm, 15% of sintered 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%, two Chromium carbide 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.

[0018] Experimental test was carried out with the castable formula of Example 2: add water accounting for 4wt% of the weight of the above formula, and the test performance indicators are as follows: the bulk densi...

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PUM

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Abstract

The invention relates to a working layer castable, in particular to a castable for a ladle lining or a working layer. According to the castable, the adopted portion is a direct lining, making contact with molten iron, of a ladle. The castable is prepared from, by weight, 8-20% of homogenized alumina 12-8 mm, 11-15% of sintered microhole aluminum spinel 8-5 mm, 12-15% of sintered microhole aluminum spinel 5-3 mm, 10-15% of sintered microhole aluminum spinel 3-1 mm, 30-35% of sintered microhole aluminum spinel smaller than or equal to 1 mm, 0-5% of modified calcium-magnesium clinker smaller than or equal to 1 mm, 1% of tri-chromium dicarbide powder, 3-5% of compound gel, 1% of hydrated alumina micro-powder, 1% of nacrite powder, 0.5% of bismuth germinate powder, 3-5% of modified pure calcium aluminate cement, 0.1% of additional C7H10N2O2S, 0.1% of C21H14Na2O6S2 and 0.05% of 2-morpholineethanesulfonic acid. According to the castable, the high temperature performance and corrosion resistance of the ladle product can be improved, the thermal shock resistance of the ladle is greatly improved, the service life of the integral casting ladle working layer is effectively prolonged, and the service life of the ladle working layer is prolonged by 30% or above compared with conventional ladle working layers of the same kind.

Description

[0001] This application is a divisional application with application number 201510380581.0. technical field [0002] The invention relates to a working layer castable, in particular to a refractory castable used in the working layer of a ladle. Background technique [0003] The refractory material in the ladle that is in direct contact with the molten iron is called the working layer of the ladle. In the prior art, aluminum-silicon castables are generally used for the working layer of the ladle, but at present, the performance of the inner lining of the ladle is average, so it directly affects the service life of the ladle. How to improve the service life of the ladle and improve the ladle The performance of the working layer is the most critical, so the improvement of the performance of the ladle lining castable becomes the key to prolonging the service life of the ladle. Contents of the invention [0004] In order to solve the above technical problems, the present inven...

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 张婷
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