Test and Analysis of Ca-based Compound Deoxidizer Used as Final Deoxidizer in Steel-making

The deoxidization mechanism of multi-element compound deoxidizer was analyzed.The industrial deoxidizing test using Ca-based compound deoxidizer was carried out.The results show that compared with SiAlFe deoxidizer,Ca-based compound deoxidizer has advantages,such as well-deoxidization effect,purification molten steel,and improving the flowability and castability of liquid steel,the average recovery rate of Si and Mn can be increased by 1.78% and 0.68%,respectively,and the cost of deoxidation be reduced by 1.75 yuan every tons of steel.In the sight of the process effect and economic benefit of the deoxidation,Ca-based compound deoxidizer is suitable for final deoxidizer in converter steel-making.