Anti-erosion aluminum oxide-magnesium oxide refractory material and preparation method thereof
By adding fly ash and glucose to the alumina-magnesium oxide refractory material to form a new crystalline structure, the problem of alumina material being eroded by H2 and CO gases during the hydrogen metallurgy process is solved, and the material's gas erosion resistance and service life are significantly improved.
CN119638376APending Publication Date: 2025-03-18ZHENGZHOU ANNEC IND
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Patent Information
- Application Number
- CN202411974682.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-18
AI Technical Summary
Technical Problem
During the hydrogen metallurgy process, alumina materials are easily eroded by H2 and CO gases, resulting in a shortened service life.
Method used
A erosion-resistant alumina-magnesium oxide refractory material is used to form a new crystalline phase structure by adding cheap fly ash and glucose, which improves the strength of the material and the ability to resist gas erosion.
Benefits of technology
It significantly improves the resistance to H2 and CO gas erosion of refractory materials, extends the service life of hydrogen metallurgy vertical furnaces, and reduces production costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of refractory materials, in particular to an anti-erosion aluminum oxide-magnesium oxide refractory material and a preparation method thereof.The anti-erosion aluminum oxide-magnesium oxide refractory material is prepared from, by weight, 30-45 parts of magnesite clinker with the particle size being 4-1 mm, 10-15 parts of magnesium aluminate spinel with the particle size being 1-0 mm, 10-15 parts of dolomite with the particle size being smaller than 0.088 mm and 20-25 parts of fused mullite with the particle size being smaller than 0.074 mm; 5-10 parts of fly ash with a particle size of less than 6 [mu] m, 1-5 parts of glucose, and 1-10 parts of anhydrous sodium silicate. According to the invention, cheap fly ash and glucose are innovatively added, so that the production cost is reduced, and the refractory material has the advantages of better performance, such as higher strength, good gas erosion resistance, good high-temperature stability, stable chemical property, good thermal conductivity and small volume density, and the weight of the refractory material is reduced, so that the refractory material does not peel off in the use process.
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