The invention relates to ferrous metallurgy compound refining agent. The TL refining agent material weight percentage is as follows: Ca-Si 28-36%, CaF2 20-40%, manganese metal powder 30-45%, and rare earth 0-4%. The TB refining agent is as follows: CaO 20-60%, BaO 16-30%, CaF2 6-20%, MgO 6-18%, NaAIF6 0-6%, NaSiF6 0-16%, and rare earth 0-6%. The refining agent can be gained by smashing, mixing, filtering, and drying, adjust Si/Mn weight percentage to increase deoxidizing effect, replace CaO by BaO to increase dephosphorizing effect, add certain rare earth to improve Ca utilization factor. It can be used in the deoxidizing, degassing, dephosphorizing, desulfurizing for straight carbon steel, low carbon steel, ultra-low micro carbon steel. |