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A kind of magnesia-iron-aluminum spinel castable for kiln mouth

A technology of magnesium-iron-aluminum spinel and iron-aluminum spinel, which is applied in the field of magnesium-iron-aluminum spinel kiln mouth castables, can solve problems such as uneven distribution of pores, and achieve enhanced competitiveness, high temperature resistance, and Alkaline good effect

Active Publication Date: 2018-02-16
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

[0003] The purpose of the present invention is to solve the above problems and provide a magnesium-iron-aluminum spinel castable for kiln mouth, which can not only reduce the problems of many pores and uneven distribution of pores, but also prolong the service life of the kiln mouth

Method used

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  • A kind of magnesia-iron-aluminum spinel castable for kiln mouth

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A magnesium-iron-aluminum spinel castable for kiln mouth, which includes the following raw materials and parts by weight: 60 parts of fused magnesia-aluminum spinel, 50 parts of fused iron-aluminum spinel, 5 parts of zirconium carbonate, carbonized 5 parts of silicon, 3 parts of silicon micropowder, 8 parts of alumina micropowder, 1 part of sodium tripolyphosphate.

[0033] Fused magnesia-aluminum spinel includes the following particle grades and parts by weight: 5-8mm, 25 parts, 3-5mm, 15 parts, 1-3mm, 10 parts, 0-1mm, 10 parts.

[0034]The fused iron-aluminum spinel includes the following particle grades and parts by weight: 5-8mm, 20 parts, 3-5mm, 15 parts, 1-3mm, 5 parts, 0-1mm, 10 parts.

Embodiment 2

[0036] A magnesium-iron-aluminum spinel castable for kiln mouth, which includes the following raw materials and parts by weight: 30 parts of fused magnesia-aluminum spinel, 25 parts of fused iron-aluminum spinel, 3 parts of zirconium carbonate, carbonized 3 parts of silicon, 2 parts of silicon micropowder, 2 parts of alumina micropowder, 0.1 part of sodium tripolyphosphate.

[0037] The fused magnesia-aluminum spinel includes the following particle grades and weight parts: 5-8mm, 15 parts, 3-5mm, 5 parts, 1-3mm, 5 parts, 0-1mm, 5 parts.

[0038] The fused iron-aluminum spinel includes the following particle grades and weight parts: 5-8mm, 10 parts, 3-5mm, 5 parts, 1-3mm, 5 parts, 0-1mm, 5 parts.

Embodiment 3

[0040] A magnesium-iron-aluminum spinel castable for kiln mouth, which includes the following raw materials and parts by weight: 70 parts of fused magnesia-aluminum spinel, 30 parts of fused iron-aluminum spinel, 4 parts of zirconium carbonate, carbonized 4 parts of silicon, 2.5 parts of silicon micropowder, 6 parts of alumina micropowder, 0.4 part of sodium tripolyphosphate.

[0041] Fused magnesia-aluminum spinel includes the following particle grades and parts by weight: 5-8mm, 20 parts, 3-5mm, 20 parts, 1-3mm, 15 parts, 0-1mm, 15 parts.

[0042] The fused iron-aluminum spinel includes the following particle grades and weight parts: 5-8mm, 10 parts, 3-5mm, 5 parts, 1-3mm, 10 parts, 0-1mm, 5 parts.

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Abstract

The invention discloses a magnesium-iron-aluminum spinel kiln pouring material, which comprises the following raw materials and parts by weight: 30-70 parts of fused magnesia-aluminum spinel, 25-50 parts of fused iron-aluminum spinel 3-5 parts of zirconium carbonate, 3-5 parts of silicon carbide, 2-3 parts of silicon micropowder, 2-8 parts of alumina micropowder, and 0.1-1 part of sodium tripolyphosphate. The present invention adds high-grade raw materials such as magnesia-aluminum spinel and iron-aluminum spinel to the formula, so that the product has strong corrosion resistance to alkaline gases such as potassium oxide and sodium oxide, and a certain amount of cement clinker can be attached to the kiln mouth To protect the kiln mouth, it has strong wear resistance, and its thermal shock resistance is much better than the original aluminum-silicon refractory castable.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a magnesium-iron-aluminum spinel kiln mouth castable. Background technique [0002] As we all know, cement raw materials and clinker are alkaline compounds, and the firing temperature of the cement firing system is above 1300°C. One of the places with the highest temperature in the firing system is the kiln mouth, and the kiln mouth pouring material has been washed by high-temperature clinker for a long time , the refractory castable here is required to have good wear resistance. In addition, due to the complexity of the firing thermal system, the temperature at the kiln mouth often changes, and the requirements for the thermal shock stability of the refractory castable are also high. The original cement kiln system usually uses aluminum-silicon refractory castables at the kiln mouth. This product is a slightly acidic material, which is easy to chemically react with alkaline c...

Claims

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Application Information

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