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A platform for research: civil engineering, architecture and urbanism
Low-carbon composite converter tapping hole brick and preparation method thereof
The invention discloses a low-carbon composite converter tapping hole brick and a preparation method thereof, and belongs to the field of refractory materials. The tapping hole is made of a composite material and comprises an outer-layer high-carbon part and an inner-layer low-carbon part from outside to inside in the radial direction, the carbon content of the outer-layer high-carbon part is 10%-20%, and the carbon content of the inner-layer low-carbon part is 3%-6%; the preparation method comprises the following steps: respectively mixing at a high speed to prepare raw materials of the outer-layer high-carbon part and the inner-layer low-carbon part, forming the outer-layer high-carbon part and the inner-layer low-carbon part by high-pressure forming after die filling, and then sequentially performing drying, oil immersion, dry distillation and sand removal processing to obtain a finished product. Through optimized combination of the formula, composite improvement of the process and reduction of the usage amount of graphite, the tapping hole is further low-carbonized, the structure is densified, the problem that graphite in bricks is oxidized by high-oxidizability slag is avoided, and the service life of the tapping hole is greatly prolonged.
本发明公开了一种低碳复合转炉出钢口砖及其制备方法，属于耐火材料领域。该出钢口由复合材质组成，径向由外至内包括外层高碳部和内层低碳部，其中外层高碳部的碳含量为10％～20％，内层低碳部的碳含量为3～6％；制备方法步骤为：分别经高速混炼后配制成外层高碳部和内层低碳部的原料，装模后高压成型形成外层高碳部和内层低碳部，再依次进行干燥、浸油、干馏、清砂加工后制得成品。本发明通过配方优化组合，工艺复合改进，减少石墨使用量，进一步使出钢口低碳化，组织致密化，避免高氧化性炉渣对砖中石墨氧化的问题，使得出钢口服役寿命大幅提高。
Low-carbon composite converter tapping hole brick and preparation method thereof
The invention discloses a low-carbon composite converter tapping hole brick and a preparation method thereof, and belongs to the field of refractory materials. The tapping hole is made of a composite material and comprises an outer-layer high-carbon part and an inner-layer low-carbon part from outside to inside in the radial direction, the carbon content of the outer-layer high-carbon part is 10%-20%, and the carbon content of the inner-layer low-carbon part is 3%-6%; the preparation method comprises the following steps: respectively mixing at a high speed to prepare raw materials of the outer-layer high-carbon part and the inner-layer low-carbon part, forming the outer-layer high-carbon part and the inner-layer low-carbon part by high-pressure forming after die filling, and then sequentially performing drying, oil immersion, dry distillation and sand removal processing to obtain a finished product. Through optimized combination of the formula, composite improvement of the process and reduction of the usage amount of graphite, the tapping hole is further low-carbonized, the structure is densified, the problem that graphite in bricks is oxidized by high-oxidizability slag is avoided, and the service life of the tapping hole is greatly prolonged.
本发明公开了一种低碳复合转炉出钢口砖及其制备方法，属于耐火材料领域。该出钢口由复合材质组成，径向由外至内包括外层高碳部和内层低碳部，其中外层高碳部的碳含量为10％～20％，内层低碳部的碳含量为3～6％；制备方法步骤为：分别经高速混炼后配制成外层高碳部和内层低碳部的原料，装模后高压成型形成外层高碳部和内层低碳部，再依次进行干燥、浸油、干馏、清砂加工后制得成品。本发明通过配方优化组合，工艺复合改进，减少石墨使用量，进一步使出钢口低碳化，组织致密化，避免高氧化性炉渣对砖中石墨氧化的问题，使得出钢口服役寿命大幅提高。
Low-carbon composite converter tapping hole brick and preparation method thereof
一种低碳复合转炉出钢口砖及其制备方法
XU KUNBO (author) / YUAN HUI (author) / ZHANG YUANHONG (author) / YU XIPING (author) / ZHAO FENG (author) / ZHOU LIANG (author) / FANG YANZHEN (author) / ZHANG GUOSHENG (author)
2023-06-23
Patent
Electronic Resource
Chinese
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