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投稿时间：2021-10-29 修订日期：2021-11-02 录用日期：2021-11-08 网络发布日期：2022-01-18
投稿时间：2021-10-29 修订日期：2021-11-02 录用日期：2021-11-08 网络发布日期：2022-01-18
中文摘要: 以电解锰生产过程中的菱锰矿为研究对象，开展了常规和超声波浸出Mn的对比研究，探讨了超声波功率、液固比、酸矿质量比、温度、时间对Mn浸出率的影响。结果表明，在超声波功率60 W、液固比5 L/g、酸矿质量比0.58、浸出温度50 ℃、浸出时间2.5 h的条件下，Mn的浸出率为94.09%，比相同条件下常规浸出提高约7个百分点。超声波在浸出过程中细化了CaSO4?2H2O钝化层，降低固液传质阻力，打开了矿物包裹体，促进新生反应界面的形成，提升了Mn的浸出效率，为菱锰矿强化浸出提供了新途径。
中文关键词: 锰 超声波 浸出 CaSO4•2H2O 界面传质
Abstract:A comparative study of conventional leaching and ultrasonic-assisted leaching of manganese from rhodochroite was conducted applying rhodochrosite as raw materials. Effects of ultrasonic power, L/S, mass ratio of acid to ore, temperature, and time on Mn leaching efficiency were discussed. The results show that leaching efficiency of Mn is up to 94.09% under the optimum conditions including ultrasonic power of 60 W, L/S of 5 L/g, mass ratio acid to ore of 0.58, temperature of 50 ℃, and time of 2.5 h, which is about 7 percent points higher than that of conventional leaching under the same conditions. The passivation layer of CaSO4?2H2O is refined by ultrasonic during leaching, and solid-liquid mass transfer resistance is reduced. Moreover, the mineral inclusion is opened and formation of new reaction interface is promoted, so the leaching efficiency of Mn is improved. These results provide a new way for Mn leaching from rhodochroite.
keywords: manganese ultrasonic leaching CaSO4•2H2O mass transfer
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基金项目:国家重点研发计划项目：（2018YFC1903500）；国家自然科学基金资助项目（52174386）
引用文本：
曾祥菲,舒建成,王继钦,曹文星,张玉改,陈梦君,张清东.超声波强化菱锰矿中锰的浸出[J].有色金属（冶炼部分）,2022(2):8-15.
ZENG Xiang-fei,SHU Jian-cheng,WANG Ji-qin,CAO Wen-xin,ZHANG Yu-gai,CHEN Meng-jun,ZHANG Qing-dong.Ultrasonic-assisted Leaching of Manganese from Rhodochrosite[J].Nonferrous Metals (Extractive Metallurgy),2022(2):8-15.
曾祥菲,舒建成,王继钦,曹文星,张玉改,陈梦君,张清东.超声波强化菱锰矿中锰的浸出[J].有色金属（冶炼部分）,2022(2):8-15.
ZENG Xiang-fei,SHU Jian-cheng,WANG Ji-qin,CAO Wen-xin,ZHANG Yu-gai,CHEN Meng-jun,ZHANG Qing-dong.Ultrasonic-assisted Leaching of Manganese from Rhodochrosite[J].Nonferrous Metals (Extractive Metallurgy),2022(2):8-15.
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