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Silicon carbide fused mullite wear-resistant castable

A silicon carbide electric and mullite technology, which is applied in the field of silicon carbide electric fused mullite wear-resistant castables, can solve the problems of chemical erosion, large amount of dust, heavy alkaline components, etc., and achieve improved high-temperature performance, The effect of saving resources and saving consumption

Active Publication Date: 2015-09-30
长兴兴鹰新型耐火建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the high temperature, the amount of dust in the medium is large, the scouring effect is strong, and the alkaline content of the dust is heavy. It is easy to cause chemical erosion to the working lining of the refractory material of the cement kiln equipment. The alkaline component reacts with the working lining material at high temperature to form a low-temperature liquid phase, and the liquid phase further penetrates and erodes the deep layer of the working lining material, affecting the performance of the working lining material , shorten the service life of the working lining, resulting in frequent damage to the working lining material, and the rotary kiln has to be shut down frequently for emergency repairs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Silicon carbide fused mullite wear-resistant castable includes the following components and the mass percentage of each component is: aggregate 50%, fine powder 20%, micro powder 12%, composite additive 10%, binder 6%, resistant Hot steel fiber 2%, as a preference, the castable is only composed of aggregate, fine powder, micro powder, composite additives, binder and heat-resistant steel fiber, wherein, one part of aggregate includes electrofused 50% mullite aggregate, 20% silicon carbide aggregate with a particle size of 0.1-3mm, 20% silicon molybdenum brick aggregate, and 10% high alumina bauxite aggregate. 30% of mullite fine powder, 55% of silica molybdenum brick fine powder with particle size ≤ 320 mesh and 15% of silicon carbide fine powder. The fine powder is a combination of fine silica powder and activated alumina fine powder, or the fine powder is A combination of microsilica powder, activated alumina micropowder and modified fused mullite micropowder, the mass...

Embodiment 2

[0046]Silicon carbide fused mullite wear-resistant castable includes the following components and the mass percentage of each component is: aggregate 65%, fine powder 10%, micro powder 18%, composite additive 3%, binder 3%, resistant Hot steel fiber 1%, as a preference, the castable is only composed of aggregate, fine powder, micropowder, composite additives, binder and heat-resistant steel fiber, wherein one part of aggregate includes electrofused 70% mullite aggregate, 10% silicon carbide aggregate with a particle size of 0.1-3mm, 10% silicon molybdenum brick aggregate, and 10% high alumina bauxite aggregate. 55% of mullite fine powder, 30% of silica molybdenum brick powder and 15% of silicon carbide fine powder with particle size ≤ 320 mesh. Obtained by crushing the discarded silica bricks, the micropowder is a combination of silica micropowder and activated alumina micropowder, or the micropowder is silica micropowder, activated alumina micropowder and modified fused mulli...

Embodiment 3

[0048] Silicon carbide fused mullite wear-resistant castable includes the following components and the mass percentage of each component is: aggregate 58%, fine powder 15%, micro powder 15%, composite additive 6%, binder 4%, resistant Hot steel fiber 2%, as a preference, the castable is only composed of aggregate, fine powder, micro powder, composite additives, binder and heat-resistant steel fiber, wherein, one part of aggregate includes electrofused 60% mullite aggregate, 15% silicon carbide aggregate with a particle size of 0.1-3mm, 15% silicon molybdenum brick aggregate, and 10% high alumina bauxite aggregate. 40% of mullite fine powder, 40% of silica molybdenum brick fine powder with particle size ≤ 320 mesh and 20% of silicon carbide fine powder. Obtained by crushing the discarded silica bricks, the micropowder is a combination of silica micropowder and activated alumina micropowder, or the micropowder is silica micropowder, activated alumina micropowder and modified fus...

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Abstract

The invention discloses a silicon carbide mullite wear-resisting casting material which comprises the following components in percentage by mass: 50-65% of aggregate, 10-20% of refined powder, 5-20% of micro powder, 3-10% of a composite additive, 3-6% of a binding agent and 1-2% of thermal resisting fiber steel. As mullite aggregate and silicon carbide aggregate are adopted as the aggregate, the casting material has properties of good temperature resistance, scouring resistance, erosion resistance and thermal shock resistance; as the silicon dioxide micro powder and the activated aluminum oxide micro powder are introduced and the ratio of the silicon dioxide micro powder to the activated aluminum oxide micro powder is adjusted, the high-temperature strength, the wear-resistance and the corrosion resistance of the material are greatly improved; a waste material, namely, silicon-mullite bricks, is utilized, so that the energy is saved, the emission is reduced, the high-temperature application property of the casting material is improved, and through addition of organic and inorganic composite additives, the high-temperature application property of the casting material is improved.

Description

technical field [0001] The invention relates to a silicon carbide fused mullite wear-resistant casting material. Background technique [0002] Due to the high temperature, the amount of dust in the medium is large, the scouring effect is strong, and the alkaline content of the dust is heavy. It is easy to cause chemical erosion to the working lining of the refractory material of the cement kiln equipment. The alkaline component reacts with the working lining material at high temperature to form a low-temperature liquid phase, and the liquid phase further penetrates and erodes the deep layer of the working lining material, affecting the performance of the working lining material , Shorten the service life of the working lining, resulting in frequent damage to the working lining material, and the rotary kiln has to be shut down frequently for emergency repairs. Contents of the invention [0003] The problem to be solved by the present invention is to provide silicon carbide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 王强许高
Owner 长兴兴鹰新型耐火建材有限公司
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