一种耐腐蚀、抗冲刷MgAlON-氧化物复合耐火材料及其制备方法

By using MgAlON-oxide composite refractory materials, and utilizing functional nano-silica and aluminum phosphate sintering aids, along with calcium fluoride and lanthanum oxide functional aids, combined with gradient sintering, the problem of insufficient corrosion resistance and erosion resistance of traditional refractory materials in RH refining furnaces has been solved, achieving high strength and long service life of the material.

CN121292999BActive Publication Date: 2026-07-17JIANGSU NUOMING HIGH TEMPERATURE MATERIALS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU NUOMING HIGH TEMPERATURE MATERIALS CO LTD
Filing Date
2025-10-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional refractory materials in RH refining furnaces cannot simultaneously achieve excellent corrosion resistance and erosion resistance, which leads to easy damage to the surface structure of the material and a shortened service life.

Method used

MgAlON-oxide composite refractory materials are used, with functional nano-silica and aluminum phosphate as sintering aids, and calcium fluoride and lanthanum oxide as functional aids. Combined with a gradient sintering process, a coating layer and a continuous network structure are formed, which improves the density and grain boundary bonding strength of the material.

Benefits of technology

It significantly improves the mechanical properties, high-temperature resistance and chemical stability of the material, enhances its wear resistance and resistance to slag penetration, and extends its service life.

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Abstract

本发明涉及耐火材料技术领域,具体涉及一种耐腐蚀、抗冲刷MgAlON‑氧化物复合耐火材料及其制备方法,包括以下质量份的原料:重烧镁砂65‑75份、刚玉15‑20份、烧结助剂4‑6份、功能助剂2‑3份,包括以下步骤:S1、将所述质量份的重烧镁砂、刚玉、烧结助剂和功能助剂混合,在搅拌机下搅拌15‑25min,得混合料;S2、将混合料压制成坯体,并对坯体进行干燥;S3、将干燥后的坯体进行氮化烧结,制得MgAlON‑氧化物复合耐火材料。制得的复合耐火材料展现出优异的力学性能、耐腐蚀性、抗冲刷性和抗热震性,其应用前景十分广阔。
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