燐酸溶解法による鐵鑛石特に砂鐵の分析に就て

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概要

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• The sand iron is not decomposed with neither hydrochloric, nitric, sulphuric nor hydrofluoric acid. The author discovered that it may be entirely dissolved with the phosphoric acid, and therefore made an analysis very easily. Ferrous oxide was titrated by kalium permanganate after dissolving the sample with phosphoric acid. Vanadium was determined by the per-sulphuric acid-ammonia method. V=a……(1) Iron was titrated with the kalium permanganate after the phosphoric acid solution was reduced with amalgam and oxidized by air-vibration. Fe+2V=b……(2) Titanium was titrated with kalium permanganate after the reduced solution was oxidized with the iron alum solution. Fe+Ti+3V=c……(3) From (1), (2), (3), the value of V, Fe and Ti may be obtained.

• 社団法人日本鉄鋼協会の論文
• 1944-04-25

著者

• 椿 勇

  通商産業省大阪工業試驗所

• 椿 勇

  日本砂鐵鋼業株式會社大阪研究室

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• 硫酸ヴアナヂルによる鐵及鋼中のマンガンクロム及びヴアナヂンの連續定量法
• 燐酸溶解法による鐵鑛石特に砂鐵の分析に就て

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