鹽基性平爐に於ける硫黄の擧動に就いて (III) : S バランス, 脱硫に關する諸因子の統計的考察及び總括

概要

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Out of the results obtained from report I and II (Tetsu-to-Hagane, Vol.39, June 1953, 582-587 ; July 1953, 677∿682, ) a sulphur balance chart was made for each heat. The average of these charts are shown in table 1. The whole amount of slag was calculated by using the amount of lime in slag as the base of calculation. From sulphur balance charts the relation between the amount of sulphur brought into the furnace atmosphere by the fuel and the sulphur pickup of the molten phase from the furnace atmosphere was studied, and it became clear that in the present working conditions sulphur in oil becomes to influence the amount of sulphur in steel bath when it exceeds about 1%. The whole amount of slag must be more than 20t, that is, about 10.0% of the molten steel so far as desulphurization was concerned. Correlation coefficients between [S] scr. (assuming value of the amount of sulphur in scraps just before molten pig is charged) and several factors that seemed to influence this value and those between (S)/[S] and the basisty of slag, (FeO) and the fluidity of slag were calculated. From the results of three reports the authors summarized the conditions and precautions to obtain good desulphurization in the basic open hearth furnace fired with oil and coke oven gas.
社団法人日本鉄鋼協会の論文
1953-09-25