著者

三浦 啓一 望月 大祐 仙波 裕隆 丸田 俊久 橋本 和明 戸田 善朝

出版者

無機マテリアル学会

雑誌

無機マテリアル (ISSN:2185436X)

巻号頁・発行日

vol.6, no.280, pp.213-219, 1999-05-01 (Released:2011-03-07)

参考文献数

9

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The fundamental experiment for the purpose of recovery of vanadium from oil burning ash, which was the valuable resources in Japan, was carried out. The following summarized the results.Sulfuric acid was superior to aqueous ammonia as extraction media in the process of leaching vanadium ion from oil burning ash.Precipitation ratio of vanadium compounds at room temperature was low. For example, the yield of vanadium compounds for 259200 s was no more than 60%. On the contrary, the precipitation rate increased at the higher reaction temperature and the yield reached up to approximately 100% at 80°C.Initial concentration of vanadium ion was the important factor besides pH and reaction temperature. The higher initial concentration of vanadium ion enlarged the appropriate pH range for the precipitation. In the case of 16000 ppm of the initial concentration, the pH range was 2.0 to 2.8. It was wider than that of 4000 ppm or 8000 ppm.The above results suggested that the higher initial concentration of vanadium ion, proper pH and higher reaction temperature were necessary to recover vanadium from oil burning ash efficiently.