... silicon, aluminum , calcium and barium .SI-Al-Ba-Ca complex deoxidizer is widely applied in the special steel production, is one ... oxygen agent, desulfurization agent. (2) SI-Al-Ba-Ca complex deoxidizer not only has good deoxidizing capacity,with the deoxidation products ... ductile cast iron production. (4)SI-Al-Ba-Ca complex deoxidizer can replace the aluminum alloy for the final deoxidation. It ...