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| A NEW SPHEROIDIZATION PROCESS FOR HIGH-SULPHUR MOLTEN IRON |
| ZHU Yuanka; PENG Yujiang; HONG Yanruo; SU Liuji; YU Xuebin (Beijing University of Iron and Steel Technology) (Manuscript received 7 March; 1983; revised manuscript 31 October; 1983) |
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Cite this article:
ZHU Yuanka; PENG Yujiang; HONG Yanruo; SU Liuji; YU Xuebin (Beijing University of Iron and Steel Technology) (Manuscript received 7 March; 1983; revised manuscript 31 October; 1983). A NEW SPHEROIDIZATION PROCESS FOR HIGH-SULPHUR MOLTEN IRON. Acta Metall Sin, 1984, 20(4): 305-312.
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Abstract A new spheroidization process was developed for production of nodular cast iron from high-sulphur (0.1%S) molten iron. The solid slag cake of rare-earth oxide was used as desulphurizer and spheroidizer under the Ar-blowing operation. The results achieved after the experiments under 1380, 1410 or 1450℃. Treatment at 1450℃ for about 45 min attended 90% of success. The carbon equivalent and the content of rare-earth for nodular cast iron produced are about 4.7% and 0.020—0.081% respectively. Thermodynamic analysis on the desulphurization and the reduction of rare-earth oxides has proved available for the experimental conditions. And it was indicated by both thermodynamic calculation and experimental practice that the solid slag cake may be used repeatedly.
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Received: 18 April 1984
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1 朱元凯;彭(忄育)强;洪彦若;李联生;杨广禄,稀土,4(1983) ,12．
2 Strizik, P.; Jeglish, F., Int. Cast Met. J., 1 (1976) , №3, 23．
3 Lux, B., Cast Met. Res. J., 8 (1972) , №2, 49．
4 Vahed, A.; Kay, D. A. R., Metall. Trans., 7B (1976) , 375．
5 魏寿昆,冶金过程热力学,上海科学技术出版社,1980,p.16．T |
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