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Processing method for anti-explosion refractory castables used by steel ladle working layers

A processing method and castable technology, which is applied in the direction of metal processing equipment, manufacturing tools, casting melt containers, etc., can solve the problems of poor air permeability, low service life, uneven stirring and vibration of ladle castables, etc., and reduce the number of workers Reduce labor intensity, improve service life, and ensure construction quality

Active Publication Date: 2013-05-15
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

[0004] Explosion-proof castables for the working layer of the ladle solve the problems of peeling, spalling and even bursting caused by poor water discharge during the ladle baking process by solving the shortcomings of the ladle castable itself, such as poor air permeability and low strength at medium and low temperatures question
However, in the construction and baking process of the castable for the current ladle working layer, there are still problems such as excessive water addition, uneven stirring and vibration, long curing and baking time, etc., resulting in slow turnover of the ladle, high baking cost, and low usage. The service life is low and cannot meet the requirements of the current ladle

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0031] A construction and baking process of explosion-proof castables for the ladle working layer, applied to the refining ladle of A steel plant, the steps are: cleaning, positioning, dry mixing, wet mixing, vibration molding, demoulding, curing, baking, wherein :

[0032] 1) clean up

[0033] Evenly remove the residue and reaction layer on the original cladding wall, keep the average thickness of the working layer as 1 / 3 of the original overall thickness, and properly spray pure tap water on the retaining cladding working layer to moisten before construction;

[0034] 2) positioning

[0035] Put the tire into it and use the positioning device to accurately position it to ensure that the thickness between the surrounding tire and the steel shell is uniform, and the steel surface is thickened by 20mm. ;

[0036] 3) dry mix

[0037] Pour the produced explosion-proof castable into the forced mixer and dry mix for 3 minutes;

[0038] 4) wet mix

[0039] During the stirring ...

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PUM

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Abstract

The invention belongs to the technical field of fire resistant materials process in the ferrous metallurgy industry and discloses construction and a baking process of anti-explosion refractory castables used by steel ladle working layers. The processing method for the anti-explosion refractory castables used by the steel ladle working layers is characterized in that the purposes of improving using effect of the materials, improving production efficiency, saving energy sources and protecting environment are achieved by controlling the additive quantity of water of the refractory castables, mode of mixing and vibrating, time of vibrating, mode of demolding, time of demoulding, temperature of natural curing and time of natural curing in the pouring process of whole steel ladles and through a high-efficient rapid three-step baking process in the ladle preparing process.

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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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/02
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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