一种二次铝灰基硅铝系耐火泥浆及其制备方法
By using calcined secondary alumina ash and secondary alumina ash as the core aluminum source, combined with silica powder and modified water glass binder, the reaction products are controlled to be mainly mullite phase, generating a microporous structure. This solves the limitation of heavy metals and alkali metal oxides in secondary alumina ash on the performance of refractory slurry, and improves the high temperature stability and thermal insulation performance of refractory slurry.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU REFUTA NEW MATERIALS CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-07-17
AI Technical Summary
Secondary aluminum ash contains heavy metal elements and impurities such as AlN, which affects its application scenarios. Furthermore, after calcination, it contains alkali metal oxides such as K2O and Na2O, which limit the performance of refractory slurry.
Using calcined secondary aluminum ash and secondary aluminum ash as the core aluminum source, combined with silicon micro powder and modified water glass binder, the reaction products are controlled to be mainly mullite phase through a reasonable silicon-aluminum ratio to generate a microporous structure. Potassium feldspar powder and alkali metal oxides are used as low-temperature sintering agents to improve the material's high temperature resistance, thermal shock resistance, and thermal insulation performance.
It improves the high temperature resistance, thermal shock resistance, and thermal insulation performance of refractory mortar, enhances the thermal insulation performance and interfacial bonding strength of the material, and reduces the sintering temperature.
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Figure BDA0005413186010000071