Method for prolonging service life of steel ladle

The invention relates to the technical field of metallurgy, in particular to a method for prolonging the service life of a steel ladle, which comprises the following steps: manufacturing a steel ladle tire film, preparing a castable, adding the prepared castable into a stirrer for dry mixing, then adding water, and continuously stirring until the mixture is uniformly stirred to form a casting material; according to the method, the pouring material is placed into the steel ladle tire film, overall ramming is conducted, the durable steel ladle structure is manufactured, the steps are simple, operation is easy and convenient, the durable steel ladle structure is manufactured through cooperation with the pouring material and overall ramming, the conditions of dead corners and cavities can be effectively avoided, and the service life of the steel ladle structure is effectively prolonged; the formula of the castable is optimized and adjusted: Al2O3 + MgO is greater than or equal to 83%, so that the compressive stre