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A platform for research: civil engineering, architecture and urbanism
Fiber-reinforced magnesian dry material for tundish for smelting variety steel
The invention discloses a fiber-reinforced magnesium dry material for a tundish for smelting variety steel. The material belongs to refractory materials for smelting variety steel; comprising magnesite, granulated magnesite, forsterite, active basic phosphate powder and fibers. The high-purity refractory raw materials are adopted, and it is guaranteed that the lining material has high refractoriness and use temperature; an environment-friendly dry lining material is prepared from the low-temperature binding agent, so that the binding strength is improved, and the protection of the surrounding environment and the health and safety of operators are facilitated; besides, the magnesia powder is indirectly introduced into the dry material in a magnesia granulation mode, so that the opportunity that the magnesia powder is in direct contact with moisture in air is avoided, and the hydrogen increasing influence of a magnesia hydration reaction on molten steel is reduced; a fibrous substance with a high softening point is also introduced, and a scattered liquid phase is formed at a high temperature, so that the microstructure uniformity and compactness of the material are facilitated, and the strength, erosion resistance and thermal shock resistance of the material are improved; and the sinterability of the material at the cold surface is not increased, and ladle turning after use is not influenced.
本发明公开了一种品种钢冶炼用中间包用纤维增强镁质干式料。属于品种钢冶炼用耐火材料；包括镁砂、造粒镁砂、镁橄榄石、活性碱式磷酸盐粉和纤维；本发明采用高纯耐火原料，保障衬料具有较高的耐火度和使用温度；其作为低温结合剂制备了一种环保型干式衬料，不仅提供结合强度，还有利于周围环境的保护和作业人员的健康安全；另外，其以造粒镁砂方式在干式料中间接引入镁砂粉，避免了镁砂粉与空气中水份直接接触的机会，降低镁砂水化反应对钢液的增氢影响；还引入高软化点的纤维物质，高温下形成零星分散的液相，利于材料微观结构均匀性和致密性，提高材料的强度、抗侵蚀性能和抗热震性能；且不会增加冷面处材料的烧结性，影响用后翻包。
Fiber-reinforced magnesian dry material for tundish for smelting variety steel
The invention discloses a fiber-reinforced magnesium dry material for a tundish for smelting variety steel. The material belongs to refractory materials for smelting variety steel; comprising magnesite, granulated magnesite, forsterite, active basic phosphate powder and fibers. The high-purity refractory raw materials are adopted, and it is guaranteed that the lining material has high refractoriness and use temperature; an environment-friendly dry lining material is prepared from the low-temperature binding agent, so that the binding strength is improved, and the protection of the surrounding environment and the health and safety of operators are facilitated; besides, the magnesia powder is indirectly introduced into the dry material in a magnesia granulation mode, so that the opportunity that the magnesia powder is in direct contact with moisture in air is avoided, and the hydrogen increasing influence of a magnesia hydration reaction on molten steel is reduced; a fibrous substance with a high softening point is also introduced, and a scattered liquid phase is formed at a high temperature, so that the microstructure uniformity and compactness of the material are facilitated, and the strength, erosion resistance and thermal shock resistance of the material are improved; and the sinterability of the material at the cold surface is not increased, and ladle turning after use is not influenced.
本发明公开了一种品种钢冶炼用中间包用纤维增强镁质干式料。属于品种钢冶炼用耐火材料；包括镁砂、造粒镁砂、镁橄榄石、活性碱式磷酸盐粉和纤维；本发明采用高纯耐火原料，保障衬料具有较高的耐火度和使用温度；其作为低温结合剂制备了一种环保型干式衬料，不仅提供结合强度，还有利于周围环境的保护和作业人员的健康安全；另外，其以造粒镁砂方式在干式料中间接引入镁砂粉，避免了镁砂粉与空气中水份直接接触的机会，降低镁砂水化反应对钢液的增氢影响；还引入高软化点的纤维物质，高温下形成零星分散的液相，利于材料微观结构均匀性和致密性，提高材料的强度、抗侵蚀性能和抗热震性能；且不会增加冷面处材料的烧结性，影响用后翻包。
Fiber-reinforced magnesian dry material for tundish for smelting variety steel
一种品种钢冶炼用中间包用纤维增强镁质干式料
LIN PENGCHENG (author) / LIU JUN (author) / LI QUANHUI (author) / FENG HAIXIA (author) / TAO BIAO (author) / WANG GANG (author)
2023-04-28
Patent
Electronic Resource
Chinese
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