Corundum ladle seat brick casting material

A castable, corundum-based technology, applied in the field of brick castables, can solve the problems of affecting the density of products, poor exhaust, environmental pollution, etc., and achieve the effects of being beneficial to environmental protection, preventing bursting, and improving product density

Inactive Publication Date: 2008-04-09
郑州荣达工矿集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ladle seat bricks used are mainly formed products. They are made of corundum, chrome corundum, magnesia carbon, magnesia aluminum carbon and other materials according to their materials. They are usually made into semi-finished products by a single vibration forming method. , due to poor exhaust, it affects the compactness of the product, and most of them are non-burning products
In addition, due to the use of more chromium oxide materials in the ladle block, it will cause certain pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The castable of corundum quality ladle seat brick according to the present invention, its composition is (percentage by weight): 24% of dense fused corundum 6-3mm, 26% of 3-1mm, 20% of 1mm or less, corundum Powder (≤0.044mm) 5%, α-alumina powder 5%, fused spinel powder (≤0.044mm) 12%, chromium oxide green 3%, silica micropowder 0.5% and alumina cement 4.5%, the above composition is mixed Homogenize the mixture, then add the following additives (the amount is the percentage of the weight of the mixture): 0.1% sodium tripolyphosphate, 0.5% sodium hexametaphosphate, 0.05% metal aluminum powder, 0.05% organic fiber.

[0016] The products are produced in the factory, and the amount of water added during construction and stirring is 5.6% of the weight percentage of the total material. A steel mold is used, and a vibrating rod is inserted into the vibrating pouring first, and then vibrated on a vibrating table.

Embodiment 2

[0018] The corundum quality ladle block castable of the present invention, its composition is (percentage by weight): dense fused corundum: 22% of 6-3mm, 26% of 3-1mm, 21% of 1mm or less, corundum powder (≤ 0.044mm) 5%, α-alumina powder 6%, fused spinel powder (alumina base, ≤0.044mm) 10%, chromium oxide green powder 3%, silicon micropowder 2%, alumina cement 5%, above The composition is mixed into a mixture, and then the following additives are added (the amount is the percentage of the weight of the mixture): 0.1% sodium tripolyphosphate, 0.1% sodium hexametaphosphate, 0.05% metal aluminum powder, and 0.05% organic fiber.

[0019] On-site construction, the amount of water added during construction and stirring is 6-7% of the weight of the total material, and the plug-in vibrating holder is used to vibrate and pour.

Embodiment 3

[0021] The corundum quality ladle block castable of the present invention, its composition is (percentage by weight): dense fused corundum: 23% of 6-3mm, 25% of 3-1mm, 21% of 1mm or less, corundum powder (≤ 0.044mm) 8%, α-alumina powder 7%, fused spinel powder (alumina base, ≤0.044mm) 10%, chromium oxide green powder 2%, silicon micropowder 4%, the above composition is mixed into a mixture , and then add the following additives (the amount added is the percentage of the weight of the mixture): sodium tripolyphosphate 0.1%, sodium hexametaphosphate 0.5%, metal aluminum powder 0.05%, organic fiber 0.05%.

[0022] To make sintered products, the amount of water added during stirring is 5.6% of the weight of the total material. In a steel mold, a vibrating rod is inserted to vibrate first, then vibrated on a vibrating table, then dried, and then sintered into a product.

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Abstract

The invention relates to corundum ladle brick cup casting material which can effectively deal with the problems of poor product consistency and environmental pollution. The invention has the technical proposal to take compact electro-melting corundum as the main skeletal material; corundum powder, Alpha-alumina powder, electrofusion spinel powder, oxidized chrome green powder and silicon fine powder as the substrate material; and alumina cement as the wedding agent. All materials are mixed evenly and then added with the additives. The ingredients have the proportions by weight: the compact electro-melting corundum of 60-70 percent, the corundum powder of 5-10 percent, the Alpha-alumina powder of 5-10 percent, the electrofusion spinel powder of 5-15 percent, the oxidized chrome green powder of 0.01-3percent, the silicon fine powder of 0.01-5 percent and the alumina cement of 0.01-5 percent. The above ingredients with a sum of 100 percent are mixed into the admixture and then added with 0.1-1.0 percent by weight of the metal powder and the organic fiber, and the added amount equals to 0.01-0.5 percent by weight of the admixture. The water capacity in the construction agitation is 4-7 percent of the total weight of the materials. The construction can be done on spot, thereby being flexile, swift and environment-friendly, and the service life is quite long.

Description

1. Technical field [0001] The invention relates to a pouring material for a seat brick of a steel-making ladle, in particular to a castable material for a corundum ladle seat brick. 2. Background technology [0002] The ladle block is a key part of the steelmaking ladle, which is constantly working under the impact of high temperature molten steel. Therefore, it is required to have the performance of anti-steel erosion, corrosion resistance and long service life. At present, the ladle seat bricks used are mainly formed products. They are made of corundum, chrome corundum, magnesia carbon, magnesia aluminum carbon and other materials according to their materials. They are usually made into semi-finished products by a single vibration forming method. , due to poor exhaust, which affects the compactness of the product, and most of them are non-burning products. In addition, due to the use of more chromium oxide materials in the ladle block, it will cause certain pollution to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B7/32C04B14/30C04B14/06
Inventor 雷发祥
Owner 郑州荣达工矿集团有限公司
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