摘要：【中文】本发明涉及耐火材料技术领域。本发明提供了一种钢包用尖晶石微粉浇注料和由该浇注料制备预制件的方法，所述钢包用尖晶石微粉浇注料包含如下质量份的组分：板状刚玉颗粒25~40份、白刚玉颗粒15~25份、电熔镁铝尖晶石颗粒15~20份、白刚玉细粉8~12份、α‑Al₂O₃微粉6~10份、烧结尖晶石微粉3~5份、水泥6~7份、钢纤维1~2份、外加剂1~3份。本发明的烧结尖晶石微粉使浇注料更加致密，孔隙率降低，孔径减小，同时促进六铝酸钙（CA₆）的生成，使基质结构得到优化。该浇注料具有较高的常温强度、高温强度，具有优异的高温抗折强度、抗渣侵蚀性和抗热震性，有效提高了钢包材料的使用寿命。 【EN】The invention relates to the technical field of refractory materials, and provides a spinel micro powder castable for a ladle and a method for preparing a prefabricated member by using the same, wherein the spinel micro powder castable for the ladle comprises, by mass, 25-40 parts of plate-shaped corundum particles, 15-25 parts of white corundum particles, 15-20 parts of fused magnesia-alumina spinel particles, 8-12 parts of white corundum fine powder, and α -Al₂O₃6-10 parts of micro powder, 3-5 parts of sintered spinel micro powder, 6-7 parts of cement, 1-2 parts of steel fiber and 1-3 parts of additive. The sintered spinel micropowder of the invention ensures that the castable is more compact, the porosity is reduced, the aperture is reduced, and simultaneously the calcium hexaluminate (CA) is promoted₆) The matrix structure is optimized. The castable has high normal temperature strength and high temperature strength, excellent high temperature rupture strength, slag erosion resistance and thermal shock resistance, and effectively prolongs the service life of the ladle material.