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Magnesian current stabilizer for tundish and preparation method of magnesian current stabilizer

The technology of flow stabilizer and tundish is applied in the field of refractory materials, which can solve the problems of low cost and short cycle, and achieve the effects of short drying cycle, low drying temperature, and improvement of corrosion resistance and erosion resistance of molten steel.

Active Publication Date: 2021-03-09
WUGANG REFRACTORY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above problems, the object of the present invention is to provide a method for preparing a magnesium flow stabilizer for tundish. The prepared magnesium flow stabilizer is not only less prone to cracking, but also has better strength and resistance to molten steel erosion , and the preparation method has the characteristics of low cost and short cycle

Method used

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  • Magnesian current stabilizer for tundish and preparation method of magnesian current stabilizer
  • Magnesian current stabilizer for tundish and preparation method of magnesian current stabilizer
  • Magnesian current stabilizer for tundish and preparation method of magnesian current stabilizer

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Embodiment 1～11

[0031] A preparation method for a magnesium current stabilizer for a tundish, comprising the steps of:

[0032] S1: Accurately weigh each component according to the formulas in Table 1 and Table 2 below;

[0033] S2: Mix the components and stir them evenly; the specific mixing order is, first mix the regenerated magnesium raw material and forsterite, and stir evenly, then add the binder and dispersant and stir evenly to form a mixture, and then add it to the mixture Add fused magnesia fine powder, activated alumina micro-powder, explosion-proof agent, stainless steel fiber, stir evenly, and finally add water and stir evenly.

[0034] S3: Pouring vibration molding in the mold;

[0035] S4: Preservation with mold: combined with Table 3, demold after 10-12 hours of preservation with mold at 20-50°C;

[0036] S5: Drying: Combined with Table 3, after demoulding, without natural health preservation, it is immediately dried in an electric drying kiln. The maximum drying temperature...

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Abstract

The invention relates to the field of refractory materials, in particular to a magnesian current stabilizer for a tundish and a preparation method of the magnesian current stabilizer. The designed magnesian current stabilizer for the tundish is characterized by being prepared from the following main raw materials in percentage by weight: 10-60% of regenerated magnesian material, 15-45% of forsterite particles, 10-40% of fused magnesia fine powder, 3-8% of activated aluminum oxide micro powder and 1-5% of a binding agent, in percentage by weight, the dispersing agent accounts for 0.1-0.5% of the main raw material, the anti-explosion agent accounts for 0.1-0.5% of the main raw material, the stainless steel fiber accounts for 0.5-1.5% of the main raw material, and the water accounts for 4-5.5% of the main raw material. The magnesian current stabilizer prepared by the preparation method disclosed by the invention is not easy to crack, and has better strength and molten steel scouring resistance, and in addition, the preparation method has the characteristics of low cost and short period.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a magnesium current stabilizer for a tundish and a preparation method thereof. Background technique [0002] As an important part of the tundish receiving molten steel, the flow stabilizer can not only effectively reduce the erosion and erosion of the refractory material in the impact zone of the tundish by the molten steel, but also effectively improve the flow of the molten steel and reduce the temperature difference in the area near the water outlet , prolong the residence time of molten steel in the tundish, promote the full floating and removal of non-metallic inclusions in steel, and effectively improve the quality of molten steel. [0003] Current stabilizers can be divided into high-alumina, magnesium-carbon, and magnesium-based according to their materials. In actual use, high-alumina and magnesium-carbon current stabilizers have problems such as not being resistant t...

Claims

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Application Information

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IPC IPC(8): C04B35/043B22D41/02B22D41/00C04B35/66
CPCC04B35/043B22D41/00B22D41/02C04B2235/3217C04B2235/447C04B2235/5212C04B2235/5216
Inventor 周芬高永生郑吉红王艳龙晏强
Owner WUGANG REFRACTORY CO LTD
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