1957 年 43 巻 12 号 p. 1281-1285
The reaction rates were measured for desulphurization of the molten Fe-S-X and Fe-S-C-X alloys with hydrogen and oxygen gas, where X represented for the elements added such as C, Si, Al, Ni, Cr, Mn.
As the results, the following was found:
The reaction rate increased by addition of carbon, silicon, aluminum and decreased by that of manganese, and were not influenced by that of nickel and chromium.
The effects of the elements added on the rate corresponded to the activity of sulphur in the melt.
The relation between the specific rate constant K and the activity coefflcient of sulphur, f was obtained as follows:
where f(S)S, f(2)S, etc, were the interaction coefflcient of sulphur.
The mechanism of desulphurization by gas was discussed in comparison with slag.