Aluminum-manganese-calcium-barium-magnesium-iron alloy for steelmaking and preparation method thereof

The invention discloses an aluminum-manganese-calcium-barium-magnesium-iron alloy for steelmaking and a preparation method thereof. The aluminum-manganese-calcium-barium-magnesium-iron alloy is prepared from the following chemical components in percentage by weight: 15%-60% of Al, 1%-15% of Ca, 1%-50% of Ba, 1%-10% of Mg, 1%-35% of Mn and the balance of Fe and trace impurities. According to the preparation method, an aluminothermic method is adopted for production, metal aluminum is used for directly reducing oxides of elements contained in the alloy to prepare the alloy, and the metal aluminum is a reducing agent and a source of aluminum in a product. The aluminum-manganese-calcium-barium-magnesium-iron alloy is high in purity, high in alkaline earth metal content, large in density and complete in function. Deep deoxidization and deep desulfuration can be achieved. Meanwhile, inclusion can be subjected to denaturation treatment, the grain size of the steel can be refined, the effect of improving the performa