Magnesia spinel brick with long service life and low expansion
By introducing modified silicon carbide whiskers and optimizing the raw material formula and process, the problem of high thermal expansion rate of magnesium spinel bricks was solved, the thermal shock resistance and slag resistance were improved, and the service life was extended.
CN122102660APending Publication Date: 2026-05-29ANGANG VESUVIUS REFRACTORY CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANGANG VESUVIUS REFRACTORY CO LTD
- Filing Date
- 2025-12-24
- Publication Date
- 2026-05-29
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Abstract
The application relates to the technical field of refractory materials, and particularly relates to a homogenized magnesia spinel brick with long service life and low expansion rate, which comprises the following raw materials in percentage by weight: sintered spinel 25-35%, modified silicon carbide whisker 1-3%, composite metal additive 2-6%, main binding agent 2-5% and auxiliary binding agent 0.8-1%, and the rest is microcrystalline magnesia. The modified silicon carbide whisker with a special structure is introduced as an interface modification reinforcing phase, and the raw material formula and the homogenization process are optimized, and the auxiliary binding agent is added, so that the thermal shock resistance stability and the mechanical properties of the material are remarkably improved, the thermal expansion rate is reduced, the molten slag resistance is good, and the service life is greatly prolonged.
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