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Long-life ladle upper nozzle brick for calcium-treated steel and preparation method thereof
The invention discloses a long-service-life ladle upper nozzle brick for calcium-treated steel and a preparation method of the long-service-life ladle upper nozzle brick, and belongs to the technicalfield of refractory materials for ladles. The upper nozzle brick comprises fine powder, modified graphite fine powder taking intercalated graphite and active metal aluminum-silicon alloy powder as rawmaterials is added into the fine powder, the content of the intercalated graphite in percentage by weight is 25-45%, and the balance is the active metal aluminum-silicon alloy powder. The high-temperature strength and toughness of the upper nozzle brick are improved, and the erosion and scouring resistance of molten steel and steel slag during high-temperature use is improved, meanwhile, the active metal aluminum powder and the active metal silicon powder are uniformly distributed around the upper nozzle brick and the intercalated graphite, and the bonding performance of the active metal aluminum powder and the active metal silicon powder with oxygen is higher than that of the active metal aluminum powder and the active metal silicon powder with carbon and oxygen, so that the oxidation resistance of the upper nozzle brick is improved.
本发明公开了一种钙处理钢用高寿命钢包上水口砖及其制备方法，属于钢包用耐火材料技术领域。该上水口砖包括细粉料，所述细粉料中添加有以插层石墨、活性金属铝硅合金粉为原料的改性石墨细粉，其中插层石墨按重量百分比的含量为25～45％，余下为活性金属铝硅合金粉。提高了上水口砖的高温强度和韧性，提高其高温使用时耐钢水和钢渣的侵蚀冲刷性能；同时，均匀分布在上水口砖及插层石墨周围的活性金属铝粉及活性金属硅粉，由于其与氧的结合性能要高于碳与氧的结合性能，提高上水口砖的抗氧化性能。
Long-life ladle upper nozzle brick for calcium-treated steel and preparation method thereof
The invention discloses a long-service-life ladle upper nozzle brick for calcium-treated steel and a preparation method of the long-service-life ladle upper nozzle brick, and belongs to the technicalfield of refractory materials for ladles. The upper nozzle brick comprises fine powder, modified graphite fine powder taking intercalated graphite and active metal aluminum-silicon alloy powder as rawmaterials is added into the fine powder, the content of the intercalated graphite in percentage by weight is 25-45%, and the balance is the active metal aluminum-silicon alloy powder. The high-temperature strength and toughness of the upper nozzle brick are improved, and the erosion and scouring resistance of molten steel and steel slag during high-temperature use is improved, meanwhile, the active metal aluminum powder and the active metal silicon powder are uniformly distributed around the upper nozzle brick and the intercalated graphite, and the bonding performance of the active metal aluminum powder and the active metal silicon powder with oxygen is higher than that of the active metal aluminum powder and the active metal silicon powder with carbon and oxygen, so that the oxidation resistance of the upper nozzle brick is improved.
本发明公开了一种钙处理钢用高寿命钢包上水口砖及其制备方法，属于钢包用耐火材料技术领域。该上水口砖包括细粉料，所述细粉料中添加有以插层石墨、活性金属铝硅合金粉为原料的改性石墨细粉，其中插层石墨按重量百分比的含量为25～45％，余下为活性金属铝硅合金粉。提高了上水口砖的高温强度和韧性，提高其高温使用时耐钢水和钢渣的侵蚀冲刷性能；同时，均匀分布在上水口砖及插层石墨周围的活性金属铝粉及活性金属硅粉，由于其与氧的结合性能要高于碳与氧的结合性能，提高上水口砖的抗氧化性能。
Long-life ladle upper nozzle brick for calcium-treated steel and preparation method thereof
一种钙处理钢用高寿命钢包上水口砖及其制备方法
ZHOU LIANG (author) / ZHANG YUANHONG (author) / WANG YUJIAO (author) / JI KAI (author) / SONG PUHUA (author) / YU XIPING (author) / ZHAO FENG (author)
2021-03-09
Patent
Electronic Resource
Chinese
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