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Working lining castable

A castable and working layer technology, applied in the field of refractory castables, can solve the problems of general performance and affect the service life of the ladle, and achieve the effects of improving the service life, reducing the erosion and damage reaction, and reducing the sticky slag

Active Publication Date: 2015-10-07
江苏泽嘉流体控制有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, 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

[0013] 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.

[0014] 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

[0016] 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.

[0017] 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 lining castable, in particular to a castable for a ladle lining or a working lining. The technical problem to be solved by the invention is to provide a castable used on a direct lining, in contact with molten iron, of a ladle, wherein the castable comprises the following components in percentage by weight: 8-20 percent of homogenized alumina with size of 12-18mm, 11-15 percent of sintered microporous alumina spinel with size of 8-5mm, 12-15 percent of sintered microporous alumina spinel with size of 5-3mm, 10-15 percent of sintered microporous alumina spinel with size of 3-1mm, 30-35 percent of sintered microporous alumina spinel with size smaller than or equal to 1mm, 0-5 percent of modified magnesia-calcium clinker with size smaller than or equal to 1mm, 1 percent of trichromium dicarbide powder, 3-5 percent of composite gel powder, 1 percent of hydrated alumina micro-powder, 1 percent of pearl-clay powder, 0.5 percent of bismuth germinate powder, 3-5 percent of modified pure calcium aluminate cement, additionally 0.1 percent of C7H10N2O2S, 0.1 percent of C21H14Na2O6S2 and 0.05 percent of 2-morpholineethanesulfonic acid. The working lining castable has the advantages that the high temperature performance and corrosion resisting performance of ladle products can be improved, the thermal shock resistance of the ladle is improved, the service life of the integrally casted ladle working lining is effectively improved, and the service life is improved by more than 30 percent relative to the conventional ladle working lining of the same type.

Description

technical field [0001] The invention relates to a working layer castable, 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 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 [0003] In order to solve the above technical problems, the present invention provides a castable for the working layer, which can reduce the reaction between the lini...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 张婷
Owner 江苏泽嘉流体控制有限公司
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