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A kind of anti-collapse tundish dry vibrating material and preparation method thereof

A vibrating material and anti-slump technology, applied in the field of refractory materials, can solve the problems of non-adherent production, collapse, local peeling, etc., and achieve the effects of improving toughness and air permeability, relieving stress and reducing shrinkage.

Active Publication Date: 2021-05-18
北京利尔高温材料股份有限公司 +1
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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 an anti-collapse tundish dry material and its preparation method, through the design of the anti-collapse tundish dry material to solve the existing technology of the tundish dry material working lining with phenolic resin as a combination agent, in the case of an imperfect baking system, it is prone to large-scale collapse and partial peeling, resulting in production failure

Method used

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  • A kind of anti-collapse tundish dry vibrating material and preparation method thereof
  • A kind of anti-collapse tundish dry vibrating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of control sample 1: Pour 93 parts of fused magnesia into the sand mixer and mix for 2 minutes, add 3 parts of additives, stir, and then pour 5 parts of phenolic resin binder (phenolic resin is the raw material produced by our factory, the other The market sales model is D012), after stirring evenly, obtain the control sample 1; wherein, the additives are soft clay, bentonite and boric acid; soft clay, bentonite and boric acid are mixed according to the weight ratio of 1:1:1; phenolic resin The market sales model for our self-produced raw materials is D012; fused magnesia MgO≥95%, SiO 2 3.2g / cm 3 ; Fused magnesia is 23 parts of fused magnesia with particle size ≤ 0.75; 20 parts of fused magnesia with particle size ≤ 1mm; 30 parts with 1< particle size ≤ 3mm; 20 parts of fused magnesia with a diameter ≤ 5mm. The fused magnesia in the following samples is the same as that of the control sample 1, and will not be repeated here.

[0038] Preparation of control...

Embodiment 2

[0050] Preparation of sample 2: Pour 93 parts of fused magnesia into the sand mixer and mix for 2 minutes, add 4 parts of additives, stir, then pour 6 parts of glucose, stir well, add 0.5 parts of organic fiber and 0.5 parts of glass Fiber, after stirring evenly, sample 2 is obtained; wherein, the additives are soft clay, bentonite, boric acid, metal silicon powder and silicon carbide micropowder, and the weight ratio of soft clay, bentonite, boric acid, metal silicon powder and silicon carbide micropowder is 1 :1:1:0.5:0.5 mixed; the organic fiber is polypropylene fiber, the length is 3mm, the diameter is 20-40μm, and the melting point is 160-170℃; the glass fiber is alkali-free borosilicate glass, the length is 3 -5mm, diameter 30-50μm, melting point 500-750℃.

[0051] Sample 2 was made into two cuboid samples of 40mm×40mm×160mm, which were demoulded after being kept at 200°C for 3 hours. After ×3h heat treatment, measure its flexural strength at room temperature, compressi...

Embodiment 3

[0054] Preparation of sample 3: Pour 93 parts of fused magnesia into the sand mixer and mix for 2 minutes, add 4 parts of additives, stir, then pour 6 parts of glucose, after stirring evenly, add 0.25 parts of organic fiber and 0.5 parts of plant Fiber and 0.25 parts of glass fiber, after stirring evenly, sample 3 is obtained; wherein, the additives are soft clay, bentonite, boric acid, metal silicon powder and silicon carbide micropowder, soft clay, bentonite, boric acid, metal silicon powder and silicon carbide The fine powder is mixed according to the weight ratio of 1:1:1:0.5:0.5; the organic fiber is polypropylene fiber, the length is 3mm, the diameter is 20-40μm, and the melting point is 160°C-170°C; the plant fiber is paper fiber, the length 2mm, diameter 10-20μm, melting point 300-500℃; glass fiber is alkali-free borosilicate glass, length 3-5mm, diameter 30-50μm, melting point 500-750℃.

[0055] Sample 3 was made into two cuboid samples of 40mm×40mm×160mm, which were ...

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Abstract

The invention relates to the technical field of refractory materials, in particular to an anti-collapse tundish dry vibrating material and a preparation method thereof; comprising 90-93 parts of fused magnesia, 5-8 parts of binder, 2-4 parts of additives, compound Fiber 0.1-1 part; Wherein, binding agent is carbohydrate binding agent; Through the design of the tundish dry type material of anti-collapse bag to solve the tundish dry type material working liner that exists in the prior art with phenolic resin as binding agent, in drying In the case of an imperfect baking system, large-scale collapse and partial peeling are prone to occur, resulting in unsmooth production.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to an anti-collapse tundish dry vibrating material and a preparation method thereof. Background technique [0002] The working layer of the tundish is the basis for protecting the normal use of the tundish; the development of the working layer of the continuous casting tundish can be divided into four stages: the stage without working layer, the stage of insulation board, the stage of smearing or spraying paint and the stage of dry material. [0003] Compared with the smearing material, the dry working lining of the tundish has the advantages of convenient construction, high thermal efficiency, fast turnover of the tundish, long service life, good disassembly of the residual lining and low energy consumption, etc., and is widely used in the metallurgical industry of continuous casting tundish . Magnesium materials have good corrosion resistance of high-iron and high-al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/043C04B35/82C04B35/622C04B38/06B22D41/02
CPCB22D41/02C04B35/043C04B35/622C04B35/82C04B38/0675C04B2235/3409C04B2235/349C04B2235/3826C04B2235/428C04B2235/5212C04B2235/5427C04B2235/77C04B2235/96C04B2235/9615C04B38/067
Inventor 于九利周胜强刘丽胡玲军任林颜浩崔志强周珂赵现华刘靖轩
Owner 北京利尔高温材料股份有限公司
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