Study on the Utilization of Pyrrhotite Principally Composed of Iron and Sulfur. IV : On the Direct Reduction of Roasting Gases with Cokes

概要

論文の詳細を見る
1. Adopting the method to make the ratio of the contents of sulfur dioxide to those of oxygen in the course of roasting pyrrhotite equal to about same weight, the resulting roasting gases are introduced into the direct reducing furnace with coke, and the relations between the obtained yield of sulfurs and the reaction temperatures were found. 2. Even if the yield of sulfurs attained to only 70% and thereabout in the case of adopting 850℃ as the reaction temperature, the ratio of carbon monoxide to sulfur dioxide in the produced gases became 2 : 1, and it was found that almost the entire amount of residual sulfur dioxide in the above reaction could be reduced to the simple sulfurs by application to those resulting mixed gases of the catalytical reducing method, reported in the previous paper (part 3). 3. Further, adopting 900℃ as the direct reducing temperature described above, the yield of sulfurs in this reaction attained to 90%, but it was found that in this case, the ratio of sulfur dioxide to carbon monoxide became more than 4 : 1, and even in the case of applying the catalytic reduction, reported in part 3 of this paper, to the resulting mixed gases, carbon monoxide was tolerably lost.
東北大学の論文