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A kind of low carbon immersion nozzle lining and preparation method thereof

An immersion and nozzle technology, applied in the field of refractory materials, can solve the problems of insufficient thermal shock stability and strength, and achieve the effects of good mechanical strength, increased loss, and good heat insulation performance

Active Publication Date: 2022-04-29
日照利尔高温新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-carbon submerged nozzle lining and its preparation method, by improving and increasing the raw material composition and its proportion to solve the existing thermal shock stability of the submerged nozzle lining in the prior art and Insufficient strength and other issues

Method used

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  • A kind of low carbon immersion nozzle lining and preparation method thereof

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Embodiment 1

[0031] The invention provides a low-carbon submerged nozzle lining, the raw material components and specific weight parts of which are as follows:

[0032] Zircon mullite particle size is 0.59-0.21mm 20 parts

[0033] Zircon mullite particle size is 0.21-0mm 10 parts

[0034] ZrO 2 Base porous insulation material 0.21-0mm 20 parts

[0035] ZrO 2 Base porous insulation material 200 mesh 10 parts

[0036] White corundum 80 mesh 10 parts

[0037] White corundum 200 mesh 10 parts

[0038] White corundum 320 mesh 10 parts

[0039] Silicon metal 1 part

[0040] boron glass 1 part

[0041] Composite graphitized carbon black 1 part

[0042] Boron nitride 1 part

[0043] 2 parts liquid phenolic resin

[0044] Wherein, composite graphitized carbon black includes graphitized carbon black and tungsten carbide.

[0045] The steps of the preparation method of the low-carbon submerged nozzle lining provided by the invention are as follows:

[0046] (1) Zircon mullite, ZrO 2 Base ...

Embodiment 2

[0052] The invention provides a low-carbon submerged nozzle lining, the raw material components and specific weight parts of which are as follows:

[0053] Zircon mullite particle size is 0.59-0.21mm 20 parts

[0054] Zircon mullite particle size is 0.21-0mm 10 parts

[0055] ZrO 2 Base porous insulation material 0.21-0mm 15 parts

[0056] ZrO 2 Base porous heat insulation material 200 mesh 15 parts

[0057] White corundum 80 mesh 10 parts

[0058] White corundum 200 mesh 10 parts

[0059] White corundum 320 mesh 10 parts

[0060] Silicon metal 1 part

[0061] boron glass 1 part

[0062] Composite graphitized carbon black 1 part

[0063] Boron nitride 1 part

[0064] 3 parts liquid phenolic resin

[0065] Wherein, composite graphitized carbon black includes graphitized carbon black and tungsten carbide.

[0066] The steps of the preparation method of the low-carbon submerged nozzle lining provided by the invention are as follows:

[0067] (1) Zircon mullite, ZrO ...

Embodiment 3

[0073] The invention provides a low-carbon submerged nozzle lining, the raw material components and specific weight parts of which are as follows:

[0074] Zircon mullite particle size is 0.59-0.21mm 20 parts

[0075] Zircon mullite particle size is 0.21-0mm 15 parts

[0076] ZrO 2 Base porous insulation material 0.21-0mm 20 parts

[0077] ZrO 2 Base porous insulation material 200 mesh 10 parts

[0078] White corundum 80 mesh 10 parts

[0079] White corundum 200 mesh 10 parts

[0080] White corundum 320 mesh 10 parts

[0081] Metal silicon 1.5 parts

[0082] Boron glass 1.5 parts

[0083] Composite graphitized carbon black 1 part

[0084] Boron nitride 1 part

[0085] 3 parts liquid phenolic resin

[0086] Wherein, composite graphitized carbon black includes graphitized carbon black and titanium carbide.

[0087] The steps of the preparation method of the low-carbon submerged nozzle lining provided by the invention are as follows:

[0088] (1) Zircon mullite, ZrO ...

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Abstract

The invention relates to the technical field of refractory materials, in particular to a low-carbon submerged nozzle lining and a preparation method thereof, which comprises: 30 to 50 parts of zirconium-mullite and 15 parts of ZrO2-based porous heat-insulating material, calculated in parts by mass ~35 parts, white corundum 25~40 parts, antioxidant 0.5~2 parts, sintering aid 0.5~2 parts, additive 0.5~2 parts, composite graphitized carbon black 1~3 parts, binder 2 Parts to 10 parts, the present invention also includes a preparation method of a low-carbon submerged nozzle lining, including mixing and co-grinding, preparing granulated material, first molding material, and second molding material, drying, firing and drying to obtain The low-carbon submerged nozzle lining solves the problems of insufficient thermal shock stability and strength of the submerged nozzle lining in the prior art by improving and increasing the composition and proportion of raw materials.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a low-carbon submerged nozzle lining and a preparation method thereof. Background technique [0002] The submerged nozzle (SEN) is a pouring refractory sleeve installed at the bottom of the tundish in the continuous casting process and inserted below the molten steel surface of the mold. The slag is involved in the molten steel, improving the flow state and heat flow distribution of the injection in the mold, thereby promoting the uniform growth of the billet shell in the mold, facilitating the discharge of gas and inclusions in the steel, and determining the liquid level of the mold. Affect the quality of continuous casting slab. In recent years, the demand for clean steel such as low carbon steel and ultra-low carbon steel has been increasing worldwide. In order to meet this requirement, it is also necessary to reduce the carbon content as much as possible during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/482C04B35/106C04B35/103C04B35/185C04B35/66
CPCC04B35/482C04B35/481C04B35/106C04B35/103C04B35/185C04B35/66C04B2235/424C04B2235/428C04B2235/36C04B2235/386C04B2235/3817C04B2235/3843C04B2235/3847C04B2235/77C04B2235/96
Inventor 郭钰龙张晗鄢凤明徐业兴赵志勇
Owner 日照利尔高温新材料有限公司