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Converter repairing mass and preparation method thereof

A technology for charging charging and converter, applied in the field of charging charging for converter and its preparation, can solve problems such as overall replacement of furnace shutdown, uneven damage to furnace lining, etc., and achieve high sintering strength, good protection effect, and good high temperature fluidity.

Inactive Publication Date: 2016-07-27
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

However, with the continuous development of iron and steel industry technology, the smelting intensity and frequency continue to increase, and the melting loss and slag erosion of refractory materials continue to increase, especially the erosion and erosion in the slag line area and high temperature area are relatively serious, resulting in uneven damage to the furnace lining. In the end, the furnace must be shut down and replaced as a whole

Method used

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  • Converter repairing mass and preparation method thereof
  • Converter repairing mass and preparation method thereof
  • Converter repairing mass and preparation method thereof

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Embodiment Construction

[0034] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In order to avoid repetition, the raw materials used in this specific embodiment are first described in a unified manner as follows, and the specific examples will not be repeated: in the aggregate of the converter repair charge, the waste magnesia-carbon brick particles contained in the mixture of fused magnesia and waste magnesia-carbon brick particles It is waste magnesia-carbon brick particles after converter use or waste magnesia-carbon brick particles after ladle use, and its MgO content is ≥ 80%, wherein the weight ratio of components with a particle size of 5-3mm to components with a particle size of 3-1mm is 10-20 : 5-30.

[0036] In the aggregate, the fused magnesia contained in the mixture of fused magnesia and waste magnesia-carbon brick particles is 96 fused small-grain magnesia, and its MgO content is ≥ 94%. Among ...

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Abstract

The invention relates to the technical field of unshaped refractory materials in converter steelmaking and particularly relates to a converter repairing mass and a preparation method thereof. The converter repairing mass is prepared from the following raw materials in parts by weight: 70-110 parts of mixture of fused magnesite and waste magnesia carbon brick particles, 10-30 parts of fused magnesite fine powder, 5-8 parts of bonding agent and 2-5 parts of filler, wherein the mixture of fused magnesite and waste magnesia carbon brick particles at least comprises 10-30 parts of fused magnesite fine powder. The preparation method of the converter repairing mass comprises the following steps of: adding 0.5-1.5 weight parts of wetting agent into the raw materials of the converter repairing mass, and mixing and stirring to obtain loose, dry and uniform aggregate. According to the converter repairing mass and preparation method thereof, the waste magnesia carbon brick serves as a raw material, and the converter lining built by the magnesia carbon bricks realizes a better protection effect; the converter repairing mass has the advantages of good high-temperature fluidity, short sintering time, high sintering strength, long service life, environmental protection and the like.

Description

technical field [0001] The invention relates to the technical field of monolithic refractories in converter steelmaking, in particular to a converter repair charge and a preparation method thereof. Background technique [0002] The furnace life of the converter is an important technical and economic indicator in the steelmaking process of the converter. Increasing the furnace life of the converter can not only improve the production efficiency of the converter, reduce the consumption of refractory materials, and ensure the operation rate of the continuous casting machine, but also play a role in blast furnace, steelmaking and steel rolling. comprehensive benefits of the system. [0003] Converter slag splash protection technology is one of the most important technological innovations in the converter steelmaking production process in the past ten years. Before the application of slag splash protection technology, the rapid corrosion of the furnace cap, trunnion and other par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/043
CPCC04B35/66C04B35/043C04B2235/402C04B2235/405C04B2235/5427
Inventor 范玉龙刘丽孙丽刘全超
Owner 北京利尔高温材料股份有限公司
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