Light steel ladle permanent layer castable

A permanent layer, castable technology, applied in ceramic products, other household appliances, household appliances, etc., can solve the problems of rapid temperature drop of molten steel and rapid heat loss

Inactive Publication Date: 2014-10-29
SHANGHAI BAOMING REFRACTORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the light-weight ladle permanent layer castables used in the past have a bulk dens

Method used

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  • Light steel ladle permanent layer castable
  • Light steel ladle permanent layer castable
  • Light steel ladle permanent layer castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A castable for a light-weight ladle permanent layer, wherein the weight percentages of each component are: 1-25mm corundum 5%, 1-15mm bauxite 50%, 0.001-0.074mm corundum 15%, 0.001-0.074mm bauxite 13%, 0.01-0.5mm plastic foam particles 2%, pure calcium aluminate cement 5%, organic additive 5%, water reducer 5%.

[0012] In this embodiment, the corundum is fused white corundum with an aluminum content ≥ 98.5%; the aluminum content of the alumina is ≥ 70%. The organic additive is polyethylene fiber.

[0013] Since the plastic foam particles are added to the castable material of the permanent layer of the light ladle, after the plastic foam particles are heated and melted at a high temperature, uniformly distributed cavities below 0.5mm are formed in the castable material, which reduces the volume of the castable material of the permanent layer of the ladle. dense, so as to achieve the effect of heat preservation of molten steel, and at the same time, it does not change t...

Embodiment 2

[0014] Example 2, Example 3, Example 4 and Example 5 refer to Table 1, and are similar to the previous examples, except that the organic additive is changed to high molecular polymer powder or polypropylene fiber, and will not be described in detail here. Table 1

[0015]

[0016]

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Abstract

The invention discloses light steel ladle permanent layer castable. The castable comprises the following components in percentage by weight: 5-50% of 1-25mm corundum, 10-50% of 1-15mm alumina, 1-15% of 0.001-0.074mm corundum, 1-15% of 0.001-0.074mm alumina, 0.5-2% of 0.01-0.5mm plastic foam particle, 1-5% of pure calcium aluminate cement, 1-5% of organic additives and 1-5% of a water reducer. The plastic foam particle is added in the light steel ladle permanent layer castable and uniformly-distributed cavities below 0.5mm are formed in the castable after the plastic foam particle is heated and molten at high temperature, so that the body density of the steel ladle permanent layer castable is reduced and the effect of preserving the temperature of molten steel is realized.

Description

Technical field: [0001] The invention relates to an inorganic non-metal refractory material, in particular to a light-weight ladle permanent layer pouring material used in continuous casting steel production. Background technique: [0002] The refractory material layer in direct contact with the molten steel in the light steel ladle is called the working layer of the ladle. Lightweight ladle permanent layer castable is a kind of refractory material used between the ladle shell and the working layer. One of its main functions is to ensure that the temperature of molten steel drops as slowly as possible during transportation and refining. However, most of the light-weight ladle permanent layer castables used in the past have a bulk density of 2.65g / cm 3 Above, the heat loss is faster, and the temperature of molten steel drops faster. Invention content: [0003] The technical problem to be solved by the present invention is to provide a light-weight ladle permanent layer ca...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B38/06
Inventor 唐龙燕余利华曹冲
Owner SHANGHAI BAOMING REFRACTORIES CO LTD
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