발간논문

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Vol.30, No.5, 532 ~ 539, 1992
Title
Utilization of LD - Dust for Desiliconization of Pig Iron
조환종Hwan Jong Cho, 반봉찬Bong Chan Ban, 윤수종Soo Jong Yoon
Abstract
Collected dust from LT system of converter was chosen as desiliconization agent and various tests were performed to find the possibility of the reuse of dust and the optimum conditions for the removal of silicon from pig iron. Also CaO was added to LD dust for the improvement of desiliconization efficiency and for the prevention of slag-foaming respectively. From this experiment, it was concluded that LD dust as dry state could be available for desiliconization and it showed many advantages during the reaction. CaO in the dust prevented slag foaming, the Mn-oxidation and phosphorization of pig iron. The optimum basicity of LD dust for desiliconization was 1.2-1.4. The only disadvantage of dust reuse was the existence of Zn and Pb. Pb was volatilized during the experiment and Zn remained as Zn-ferrite in the slag.
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