Castable for working layer of refining ladle slag line as well as preparation method and application of castable

A technology of castables and slag cladding lines, which is applied in the field of refractory materials to achieve the effects of strong integrity, reduced consumption of refractory materials, and shortened construction time

Active Publication Date: 2015-01-28
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of steelmaking and refining technology, it is the general trend to use secondary refining to produce ultra-clean steel, reduce inclusions in steel, and improve steel variety and quality. However, the use of slag-line magnesia-carbon bricks has become a bottleneck for carburization and heat preservation of molten steel.

Method used

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  • Castable for working layer of refining ladle slag line as well as preparation method and application of castable
  • Castable for working layer of refining ladle slag line as well as preparation method and application of castable
  • Castable for working layer of refining ladle slag line as well as preparation method and application of castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the batching of the castable for the working layer of the refining ladle slag line includes the following components:

[0049]

[0050]

[0051] Among them, the batching of 8.27 parts of nano hydroxide composite sol suspension binder includes 2 parts of nano aluminum hydroxide, 2 parts of nano magnesium hydroxide, 0.15 part of sodium hexametaphosphate, 0.10 part of sodium tripolyphosphate, 0.02 part of citric acid, 4 parts water.

Embodiment 2

[0053] In this example, the ingredients given in Example 1 are used to prepare the castable for the working layer of the refining ladle slag line. The preparation method includes the following steps:

[0054] (1) according to the batching preparation 500kg raw material of the nano-hydroxide composite sol suspension binding agent that provides in embodiment 1, this raw material was stirred in GW750 mixer for 8 hours, made nano-hydroxide sol suspension binding agent; respectively Sealed and packaged for use.

[0055] (2) Aggregate and matrix powder are prepared 1000.8kg of raw materials according to the batching given in Example 1, and the above raw materials are dry-mixed in a GW750 mixer for 3-5 minutes to obtain a mixture; Materials, sealed and packaged separately for use.

[0056] (3) Join the prepared nano hydroxide sol suspension binder in step (1) according to the ratio of embodiment 1 in the mixture obtained in step (2), and continue to wet mix and stir in the GW750 mix...

Embodiment 3-5

[0058] Compared with Example 1, the only difference is that the ingredients of the castable for the working layer of the refining ladle slag line in Examples 3-5 are composed of the following raw materials, as shown in the following table:

[0059]

[0060]

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Abstract

The invention relates to the field of refractory materials and particularly relates to castable for a working layer of a refining ladle slag line as well as a preparation method and an application of the castable. The castable for the working layer of the refining ladle slag line comprises the following components in parts by mass: aggregates, matrix powder as well as a nano hydroxide composite sol suspension liquid. The refractory castable disclosed by the invention has slag penetration resistance and corrosion resistance which are equivalent to those of a magnesia carbon brick, but has relatively high bonding strength between the matrix and the aggregates, relatively strong integrity and relatively excellent impact resistance and thermal rock resistance, is suitable for integrally casting a slag line part to realize all casting of the ladle bottom, the ladle wall and the slag line part of the refining ladle, so that the construction time is greatly shortened, the labor power is saved, integral reinforcing is realized after one-time use, and the consumption of a great deal of refractory materials can be reduced.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a castable for the working layer of a refining ladle slag line, a preparation method and an application thereof. Background technique [0002] In recent years, the main trend in the development of refractory technology is the continuous increase of monolithic or unshaped refractory materials, especially the use of refractory castables, which account for more than half of the total output of refractory materials in many countries. The refractory castable for the working layer of the ladle has the advantages of no carbon addition to the molten steel, no pollution, simple and efficient construction, excellent thermal insulation effect, and the reduction of material consumption and production cost caused by continuous casing pouring, so the refractory castable is used for ladle Integral pouring has become an important direction for the development of refractory technology. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66B22D41/02
Inventor 任林刘丽张盛晁尚奎吴永生茹明明赵伟刘美荣车晓梅赵传亮黄亚东鄢凤明胡玲军王晓东赵冉
Owner 北京利尔高温材料股份有限公司
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