Rare earth alloy block for steelmaking refining and manufacturing method thereof

The invention discloses a rare earth alloy block for steelmaking refining and a manufacturing method thereof, and belongs to the technical field of metallurgical materials. The rare earth alloy block for steelmaking refining comprises a double-layer metal shell and granular rare earth materials filled in the double-layer metal shell, the double-layer metal shell is composed of an outer layer and an inner layer, the outer layer is of a shell structure with two smooth faces and uniform thickness, the side, close to the outer layer, of the inner layer is machined into uneven protrusions, and the other side of the inner layer is machined into a smooth face. According to the shell with the double-layer metal shell, rare earth materials are wrapped and sealed under the protection of inert gas, rare earth alloy blocks are manufactured after packaging, the rare earth alloy blocks can rapidly break through a slag layer to reach the specific position of molten steel to be alloyed after being put into the molten steel,