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Preparation method of multi-morphology coexisting MgAlON refractory material for RH (Ruhrstahl Heraeus) refining furnace
The invention relates to a refractory product in the field of refractory materials, in particular to a preparation method of a multi-morphology coexisting MgAlON refractory material for an RH (Ruhrstahl Heraeus) refining furnace, which comprises the following steps: by taking magnesia particles as aggregates and taking a mixture of activated alumina powder, metal aluminum powder and magnesia fine powder as a matrix, adding a binding agent, uniformly mixing, mixing, performing dry-pressing molding, and drying, thereby obtaining the multi-morphology coexisting MgAlON refractory material for the RH refining furnace. The dried green brick is put into a high-temperature furnace in a nitrogen atmosphere, heat preservation is carried out, when the furnace temperature is naturally cooled to the normal temperature, a multi-morphology coexisting magnesia-AlON refractory material product is obtained, granular, shell-shaped, sheet-shaped and fiber-shaped magnesia-AlON spinel reduces the pore diameter of pores and is distributed in a matrix in a crossed mode, permeation of steel slag is facilitated, the thermal shock resistance of the material can be improved, and the thermal shock resistance of the material is improved. The erosion resistance, the penetration resistance and the thermal shock resistance of the prepared multi-morphology coexisting magnesia-AlON refractory material are improved through the combined action of the two, the magnesia-AlON refractory material can replace a magnesite-chrome brick refractory material to be used in a key part in an RH refining furnace, and the service life of the RH refining furnace is prolonged.
本发明涉及耐火材料领域的耐火制品，具体涉及一种RH精炼炉用多形貌共存的镁阿隆耐火材料制备方法，以镁砂颗粒为骨料，以活性氧化铝粉、金属铝粉和镁砂细粉的混合料为基质，加入结合剂混合均匀后混炼干压成型，然后烘干处理，将烘干后的砖坯放入氮气气氛的高温炉中，保温，待炉温自然冷却至常温就得到多形貌共存的镁阿隆耐火材料制品，粒状、壳状、片状和纤维状镁阿隆尖晶石缩小气孔孔径，交叉分布在基质中，有利于钢渣的渗透，还能提高材料的热震稳定性，两者共同作用使制备得到的多形貌共存的镁阿隆耐火材料的抗侵蚀性能、抗渗透性能和热震稳定性得以提升，可以代替镁铬砖质耐火材料用在RH精炼炉中的关键部位，提高RH精炼炉寿命。
Preparation method of multi-morphology coexisting MgAlON refractory material for RH (Ruhrstahl Heraeus) refining furnace
The invention relates to a refractory product in the field of refractory materials, in particular to a preparation method of a multi-morphology coexisting MgAlON refractory material for an RH (Ruhrstahl Heraeus) refining furnace, which comprises the following steps: by taking magnesia particles as aggregates and taking a mixture of activated alumina powder, metal aluminum powder and magnesia fine powder as a matrix, adding a binding agent, uniformly mixing, mixing, performing dry-pressing molding, and drying, thereby obtaining the multi-morphology coexisting MgAlON refractory material for the RH refining furnace. The dried green brick is put into a high-temperature furnace in a nitrogen atmosphere, heat preservation is carried out, when the furnace temperature is naturally cooled to the normal temperature, a multi-morphology coexisting magnesia-AlON refractory material product is obtained, granular, shell-shaped, sheet-shaped and fiber-shaped magnesia-AlON spinel reduces the pore diameter of pores and is distributed in a matrix in a crossed mode, permeation of steel slag is facilitated, the thermal shock resistance of the material can be improved, and the thermal shock resistance of the material is improved. The erosion resistance, the penetration resistance and the thermal shock resistance of the prepared multi-morphology coexisting magnesia-AlON refractory material are improved through the combined action of the two, the magnesia-AlON refractory material can replace a magnesite-chrome brick refractory material to be used in a key part in an RH refining furnace, and the service life of the RH refining furnace is prolonged.
本发明涉及耐火材料领域的耐火制品，具体涉及一种RH精炼炉用多形貌共存的镁阿隆耐火材料制备方法，以镁砂颗粒为骨料，以活性氧化铝粉、金属铝粉和镁砂细粉的混合料为基质，加入结合剂混合均匀后混炼干压成型，然后烘干处理，将烘干后的砖坯放入氮气气氛的高温炉中，保温，待炉温自然冷却至常温就得到多形貌共存的镁阿隆耐火材料制品，粒状、壳状、片状和纤维状镁阿隆尖晶石缩小气孔孔径，交叉分布在基质中，有利于钢渣的渗透，还能提高材料的热震稳定性，两者共同作用使制备得到的多形貌共存的镁阿隆耐火材料的抗侵蚀性能、抗渗透性能和热震稳定性得以提升，可以代替镁铬砖质耐火材料用在RH精炼炉中的关键部位，提高RH精炼炉寿命。
Preparation method of multi-morphology coexisting MgAlON refractory material for RH (Ruhrstahl Heraeus) refining furnace
一种RH精炼炉用多形貌共存的镁阿隆耐火材料制备方法
TONG SHANGHAO (author) / ZHAO JIZENG (author) / SHAO JING (author) / HOU YAOZHONG (author) / LIU LEI (author) / LI YONG (author)
2022-05-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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