Ultralow-temperature high-manganese steel continuous casting non-reactive casting powder

The invention discloses ultralow-temperature high manganese steel continuous casting non-reactive casting powder, and belongs to the technical field of casting powder. The casting powder disclosed by the invention comprises the following components in percentage by mass: 30%-45% of CaO, 30%-45% of SiO2, 6%-10% of Al2O3 and 1t of Na2O; 3%, 15 to 20% of MnO, and F-lt; 5% of Li2O, less than or equal to 2% of MgO, less than or equal to 1% of Fe2O3, more than or equal to 0.8% and less than or equal to 1.3% of CaO/SiO2, and the balance of impurities. The invention aims to provide the non-reactive continuous casting crystallizer casting powder suitable for the ultralow-temperature high manganese steel plate blank. The slag metal reactivity of the high manganese steel is changed by adding 15%-20% of MnO into the casting powder, so that (SiO2) in the casting powder does not react with [Mn] in the steel in the continuous casting process, and components and performance are kept stable, that is, the casting powder has go