Acta Metall Sin  1959, Vol. 4 Issue (2): 95-106    DOI:

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BEHAVIOUR OF FLUORINE IN BLAST-FURNACE SMELTING Ⅳ. MECHANISM OF VOLATILIZATION OF FLUORINE AND ITS MOVEMENT IN A 11M~3 BLAST-FURNACE SMELTING PAO-TOU IRON ORE

INSTITUTE OF METALLURGY AND CERAMICS; ACADEMIA SINICA

INSTITUTE OF METALLURGY AND CERAMICS; ACADEMIA SINICA. BEHAVIOUR OF FLUORINE IN BLAST-FURNACE SMELTING Ⅳ. MECHANISM OF VOLATILIZATION OF FLUORINE AND ITS MOVEMENT IN A 11M~3 BLAST-FURNACE SMELTING PAO-TOU IRON ORE. Acta Metall Sin, 1959, 4(2): 95-106.

Abstract References Related Articles Recommended Metrics Download:  PDF(960KB)  Export:  BibTeX | EndNote (RIS)       Abstract  In a previous paper, data on the movement of fluorine during the smelting of Pao-Tou ironore in a 1 M~3 experimental blast-furnace has been reported. This paper provides further infor-mation on the mechanism of volatilization of fluorine and its movement in a 11 M~3 blast-furnaceduring two campaigns of smelting of the same ore. The conclusion of the previous paper is confirmed by the results of the present investigation inthat the fluorine content of the blast-furnace gas depends primarily on temperature, and approachesequilibrium with lime or limestone in the furnace charge. It has also been found that this state-ment holds true only at those temperatures when a slag phase has not been formed, and that thefluorine content of the furnace, gas decreases rapidly at the appearance of a liquid slag phase. From the analysis of the ore samples taken at different levels of the blast-furnace, it has beenfound that the CaO/F ratio increases as the ore moves downward, and that there is a parallelrelationship between the SiO_2 and the F contents of the ore samples. These facts seem to indicatethat fluorine volatilizes from the ore chiefly as SiF_4, which subsequently reacts with H_2O in thefurnace gas to form HF and SiO_2. The mechanism of volatilization of fluorine from the liquid slag is also briefly discussed. Received:  18 February 1959      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1959/V4/I2/95 [1] 周仁等,氟在高炉冶炼中的行为Ⅲ.氟在1M~3实验高炉冶炼包头铁矿过程中的变化. [2] 氟在高炉冶炼中的行为Ⅴ.11M~3高炉冶炼包头铁矿中成渣过程之研究. [3] F. A. Lenfesty et al., Ind. and Eng. Chem., 44; 1448 (1952) . No related articles found! No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed