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The invention belongs to the technical field of ladle bricks, and particularly relates to an in-situ spinel ladle brick for high-cleanliness steel smelting and a preparation method of the in-situ spinel ladle brick. The preparation method comprises the following steps: S1, mixing aluminum oxide, magnesium oxide, aluminum powder and a binder to obtain a dry mixture; s2, adding water into the dry mixture, and mixing to obtain a wet mixture; and S3, the wet mixture is subjected to compression molding, heating and drying, and the in-situ spinel ladle brick for high-cleanliness steel smelting is obtained. Aluminum is added into the in-situ spinel refractory material to improve the high-temperature performance of the in-situ spinel refractory material. Under the steelmaking temperature condition, aluminum is in a liquid state and can be filled into gaps among raw material particles and pores in the raw material particles, the apparent porosity of the spinel refractory material is reduced, the spinel refractory material rapidly reacts with magnesia, the final product spinel is an effective component resistant to high-temperature melt erosion, and released magnesium steam is an excellent deoxidizing and desulfurizing agent; impurities in the steel can be removed after entering the molten steel, the molten steel is further cleaned, and the steel quality is improved.
本发明属于钢包砖技术领域，具体涉及一种高洁净钢冶炼用原位尖晶石钢包砖及其制备方法。该制备方法包括如下步骤：S1：将氧化铝、氧化镁、铝粉和粘结剂混合，得到干混料；S2：向所述干混料中加入水，混合，得到湿混料；S3：将所述湿混料压制成型，加热干燥，得到所述高洁净钢冶炼用原位尖晶石钢包砖。本发明提出在原位尖晶石耐火材料中加入铝以提高其高温性能。在炼钢温度条件下铝呈液态，可以充入原料颗粒间空隙以及原料颗粒内孔隙，减少尖晶石耐火材料的表观空隙率并迅速与镁砂发生反应，最终产物尖晶石为抗高温熔体侵蚀的有效成分，释放出的镁蒸气是极佳的脱氧、脱硫剂，进入钢液中可以脱除钢中杂质，进一步洁净钢液提高钢品质。
The invention belongs to the technical field of ladle bricks, and particularly relates to an in-situ spinel ladle brick for high-cleanliness steel smelting and a preparation method of the in-situ spinel ladle brick. The preparation method comprises the following steps: S1, mixing aluminum oxide, magnesium oxide, aluminum powder and a binder to obtain a dry mixture; s2, adding water into the dry mixture, and mixing to obtain a wet mixture; and S3, the wet mixture is subjected to compression molding, heating and drying, and the in-situ spinel ladle brick for high-cleanliness steel smelting is obtained. Aluminum is added into the in-situ spinel refractory material to improve the high-temperature performance of the in-situ spinel refractory material. Under the steelmaking temperature condition, aluminum is in a liquid state and can be filled into gaps among raw material particles and pores in the raw material particles, the apparent porosity of the spinel refractory material is reduced, the spinel refractory material rapidly reacts with magnesia, the final product spinel is an effective component resistant to high-temperature melt erosion, and released magnesium steam is an excellent deoxidizing and desulfurizing agent; impurities in the steel can be removed after entering the molten steel, the molten steel is further cleaned, and the steel quality is improved.
本发明属于钢包砖技术领域，具体涉及一种高洁净钢冶炼用原位尖晶石钢包砖及其制备方法。该制备方法包括如下步骤：S1：将氧化铝、氧化镁、铝粉和粘结剂混合，得到干混料；S2：向所述干混料中加入水，混合，得到湿混料；S3：将所述湿混料压制成型，加热干燥，得到所述高洁净钢冶炼用原位尖晶石钢包砖。本发明提出在原位尖晶石耐火材料中加入铝以提高其高温性能。在炼钢温度条件下铝呈液态，可以充入原料颗粒间空隙以及原料颗粒内孔隙，减少尖晶石耐火材料的表观空隙率并迅速与镁砂发生反应，最终产物尖晶石为抗高温熔体侵蚀的有效成分，释放出的镁蒸气是极佳的脱氧、脱硫剂，进入钢液中可以脱除钢中杂质，进一步洁净钢液提高钢品质。
In-situ spinel ladle brick for smelting high-cleanliness steel and preparation method of in-situ spinel ladle brick
一种高洁净钢冶炼用原位尖晶石钢包砖及其制备方法
HONG LAN (author)
2023-05-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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