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Explosion proofing castable for steel ladle working layer

A technology of castables and working layers, which is applied in the field of refractory materials for ladles, and can solve problems such as poor air permeability, bursting, and low strength at medium and low temperatures

Active Publication Date: 2013-05-08
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, by solving the problems of poor air permeability and low medium and low temperature strength of the ladle castable itself, and then solving the problems of peeling, peeling or even bursting caused by poor water drainage during the ladle baking process, in order to reduce the baking of the ladle castable cycle, reduce baking cost, and speed up ladle turnover, which has practical significance

Method used

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  • Explosion proofing castable for steel ladle working layer
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Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment one: the explosion-proof castable for the ladle working layer is configured with the following raw material components: high alumina bauxite (Al 2 o 3 : 88.1%, Fe 2 o 3 : 1.1%, CaO: 0.7%, bulk density: 3.22g / cm 3 ): 30%, fused white corundum (Al 2 o 3 : 99.5%, bulk density: 3.53g / cm 3 ): 58%, 97 fused magnesia (MgO: 97.2%, SiO 2 : 1.8%, CaO: 0.5%, bulk density: 3.19g / cm 3 ): 4.5%, 95 silica powder (SiO 2 : 95.6%, Al 2 o 3 : 0.6%): 1.1%, α-alumina fine powder (Al 2 o 3 : 99.7%, Fe 2 o 3 : 0.1%): 6%, composite explosion-proof agent (metal aluminum powder, 0.03%; low melting point explosion-proof fiber, 0.1%, aluminum lactate powder, 0.05%): 0.18%, organic-inorganic composite water reducer (ADW1, 0.1%, ADS1, 0.1%, sodium tripolyphosphate, 0.1%): 0.3%, respectively fully and evenly mix the raw materials according to the proportion. The actual amount of water added on site is 4.5-5.0%.

[0025] The explosion-proof castable for the working layer of ...

Embodiment 2

[0026] Embodiment two: the explosion-proof castable for the ladle working layer is configured with the following raw material components: the explosion-proof castable for the ladle working layer is configured with the following raw material components (WL%): 88 high alumina bauxite (Al 2 o 3 : 88.1%, Fe 2 o 3 : 1.1%, CaO: 0.7%, bulk density: 3.22g / cm 3 ): 66%, fused white corundum (Al 2 o 3 : 99.5%, bulk density: 3.53g / cm 3 ): 18.5%, 96 fused magnesia (MgO: 96.4%, SiO 2 : 2.1%, CaO: 0.6%, bulk density: 3.14g / cm 3 ): 9.5%, 92 silica powder (SiO 2 : 93.3%, Al 2 o 3 : 0.9%): 2%, α-alumina fine powder (Al 2 o 3 : 99.7%, Fe 2 o 3 : 0.1%): 4%, composite explosion-proof agent (metal aluminum powder, 0.03%; low melting point explosion-proof fiber, 0.1%, aluminum lactate powder, 0.05%): 0.18%, organic-inorganic composite water reducer (ADW1, 0.1%, ADS1, 0.1%, sodium tripolyphosphate, 0.1%): 0.3%, respectively fully and evenly mix the raw materials according to the proport...

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Abstract

The invention belongs to the technical field of a refractory material technology for steel ladles in the ferrous metallurgy industry, and discloses an explosion proofing castable for a steel ladle working layer. The explosion proofing castable is characterized in that a composite explosion-proof agent and a composite water reducing agent are introduced in the castable, and the composition and the mixing ratio of the castable are adjusted, so that the inner structure of a material is improved, the air permeability and the strength at an intermediate temperature of the material are improved, the problem that the castable is peeled, separated and then cracked during being baked can be effectively avoided, the resulting loss of a user can be avoided, and simultaneously, the baking time is reduced, the energy is saved, and the pollution is reduced.

Description

technical field [0001] The invention belongs to the technological field of refractory materials for ladles in the iron and steel metallurgy industry, and in particular relates to an explosion-proof castable for ladle working layers. Background technique [0002] With the large-scale, high-efficiency, continuous casting of steelmaking technology equipment and the continuous development of labor saving, energy saving and consumption reduction, higher requirements are put forward for refractory materials for ladles. How to use materials and construction technology freely , constantly seeking to improve the package life, and greatly reduce the unit consumption. [0003] At present, the promotion and use of low-cement, ultra-low-cement, and cement-free series castables for the ladle working layer, on the one hand, overcomes the shortage of traditional aluminum-magnesium-carbon bricks in increasing the carbon content of molten steel, and ensures the production of low-carbon steel....

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 任林刘丽曹仁锋赵伟张晓波刘靖轩车晓梅胡玲军赵冉张艳凤于久利焉凤明樊浩勇黄建
Owner 北京利尔高温材料股份有限公司
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