Study on the Utilization of Pyrrhotite Principally Composed of Iron and Sulfur. II : On Making Sulfuric Acid from the Roasting Gases of Pyrrhotite
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概要
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Considering the results obtained in the preceding paper, the pyrrhotite, mesh of which is 28''〜32'', was roasted at 700℃ using a baby rotary furnace, and from the roasting gases sulfuric acid was made by the contact process. Finally, the following results may be stated : - 1. As for our contact process for making sulfuric acid, the most favourable conditions are as follows : - (1) The sulfur dioxide concentration is 7〜7.5%. (2) The temperature of catalyser is about 440℃. 2. The pyrrhotite cinders, which are obtained in roasting 75〜120g. of ores (28''〜32'') for 30〜48 hours at 700℃ in a baby rotary furnace, contain residual sulfurs, which amount to 0.2〜0.4%, and are sufficiently available for iron making.
- 東北大学の論文
著者
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Koizumi Koichi
The Research Institute For Iron Steel And Other Metals
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ISHIWARA Torajiro
The Research Institute for Iron, Steel and Other Metals
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NIWA Kichizo
The Research Institute for Iron, Steel and Other Metals
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Ishiwara Torajiro
The Research Institute For Iron Steel And Other Metals
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Niwa Kichizo
The Research Institute For Iron Steel And Other Metals
関連論文
- Study on the Utilization of Pyrrhotite Principally Composed of Iron and Sulfur. II : On Making Sulfuric Acid from the Roasting Gases of Pyrrhotite
- Study on the Utilization of Pyrrhotite Principally Composed of Iron and Sulfur. I : On the Roasting of Pyrrhotite
- Study on the Utilization of Pyrrhotite Principally Composed of Iron and Sulfur. IV : On the Direct Reduction of Roasting Gases with Cokes
- Study on the Utilization of Pyrrhotite Principally Composed of Iron and Sulfur. III : On Sulfur Making by the Catalytic Reduction of Roasting Gases with Blast Furnace Gases