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Tundish covering agent

A covering agent and tundish technology, applied in the field of environment-friendly granular tundish covering agent, can solve problems such as inability to meet, and achieve the effects of improving service life, reducing slagging at the mouth of the package, and reducing heat loss.

Inactive Publication Date: 2011-05-18
杨忠鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the tundish covering agent given by the above technical scheme has different components, it can have certain thermal insulation performance and prevent the secondary oxidation of molten steel, but it cannot meet the needs of the market. With the development of science and technology, Newer and better tundish covering agents are expected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Get 45 kilograms of CaO by the chemical composition of the tundish covering agent that the present invention provides, SiO 2 34.5 kg, MgO 4 kg, AL 2 o 3 16 kg, Fe 2 o 3 0.5 kg is mixed and stirred into 100 kg of ladle covering agent. After forming → drying → packaging, it is a finished product. When used, it is covered on the surface of molten steel, so that the surface of molten steel does not leak red, and the slag layer does not crust, which plays the role of heat insulation. .

Embodiment 2

[0021] Get 36 kilograms of CaO, SiO by the chemical composition of the tundish covering agent that the present invention provides 2 40 kg, MgO 3 kg, AL 2 o 3 15 kg, Fe 2 o 3 0.2 kg, C 5.8 kg, mixed and stirred to form 100 kg of ladle covering agent, after forming→drying→packaging, it will be a finished product. To the role of thermal insulation.

Embodiment 3

[0023] Get 37 kilograms of CaO, SiO by the chemical composition of the tundish covering agent that the present invention provides 2 28 kg, MgO 6 kg, AL 2 o 3 15 kg, Fe 2 o 3 1 kg, 13 kg of C, mixed and stirred to form 100 kg of ladle covering agent, after molding→drying→packaging, it will be a finished product. To the role of thermal insulation.

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PUM

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Abstract

The invention relates to a tundish covering agent, which is characterized by comprising the following chemical components in percentage by weight: 35 to 46 percent of CaO, 28 to 62 percent of SiO2, 3 to 6 percent of MgO, 9 to 21 percent of Al2O3, 0.3 to 1 percent of Fe2O3 and 0 to 18 percent of C. The tundish covering agent has the characteristics of high spreadability, heat insulation and preservation, high slag absorbing property, easy turning and the like, is quickly molten on the surface of molten steel to make the surface of the molten steel not leak red and slag blankets not crusted, can reduce heat loss and temperature reduction of liquid steel in a steel ladle, also has high capability of dissolving and absorbing impurities in the liquid steel, improves the purity of the liquid steel, reduces ladle opening slagging and is favorable for deslagging and improving the service life of the steel ladle.

Description

technical field [0001] The invention relates to a tundish covering agent, in particular to an environment-friendly granular tundish covering agent, which is an improvement on the composition of the existing tundish covering agent, and belongs to the technical field of B22D11 / 111 in the international patent classification. Background technique [0002] Molten steel protection is one of the important links in the modern steelmaking industry, and plays an important role in improving the quality of steel and producing special steel. The tundish for storing and transporting molten steel is the main equipment in the smelting process, so the protection of molten steel in the tundish is an important part of the whole process of molten steel, which is directly related to avoiding secondary oxidation of molten steel, reducing temperature drop and improving the purity of molten steel . [0003] The early protection of molten steel in the tundish mainly refers to the addition of a sing...

Claims

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Application Information

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IPC IPC(8): B22D11/111
Inventor 杨忠鑫
Owner 杨忠鑫