CaC_2 による熔銑の脱流

概要

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The authors studied the process of the desulphurization of molten pig iron with calcium carbide or calcium oxide powder by injection with carrier gas such as nitrogen or air. The results obtained were as follows. (1) The highest desulphurizing efficiency was found in case of using the calcium carbide as desulphurizing agent and carrier gas as nitrogen. (2) At the temperature above 1350℃, the sulphur was removed easily to 20 per cent or less of the initial content, by injection of 1 per cent calcium carbide. (3) Calcium carbide did not affect the other chemical compositions and nitrogen gas was not insoluble in molten iron. (4) As the carrier gas, air was used instead of nitrogen, but the desulphurizing efficiency was more or less lower. (5) Calcium oxide was less effective than calcium carbide. Through the industrial application of this study, the desulphurization of few thousand tons of iron was achieved, and subsequently good castings were produced during the past 6 months.
社団法人日本鉄鋼協会の論文
1955-12-01