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›› 2002, Vol. 2 ›› Issue (1): 0-0.

• 1 •    

细粒嵌布锰银矿浸取中的超声强化作用

袁明亮，邱冠周，王淀佐   

  1. 1. 中南大学矿物工程系，湖南 长沙 410083；2. 北京有色金属研究总院，北京 100088
  • 出版日期:2002-02-20 发布日期:2002-02-20

Physical Modeling of the Vortex Phenomenon in Continuous Casting Mould

LEI Hong, ZHU Miao-yong, HE Ji-cheng   

  1. 1. Central South University , Changsha, Hunan 410083, China;2. Beijing General Institute of Non-Ferrous Metals, Beijing 100088, China
  • Online:2002-02-20 Published:2002-02-20

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摘要： 采用先锰后银两段浸出流程处理高锰银矿取得了较好的效果. 一段浸出以黄铁矿为还原剂浸出分解包裹银的锰矿物，暴露出新鲜的银矿物，锰分解率为96%，相应的工艺条件为：反应温度95℃，反应时间5 h，黄铁矿:锰银矿=0.20:1；当向反应器中输入频率为40 kHz的超声波时，比常规的锰浸出时间减少一半，黄铁矿用量也明显降低. 二段浸锰渣采用氰化法提银，银的浸出率可达95%，大大高于锰银矿直接氰化法的银浸出率28%.

关键词: 锰, 银矿, 浸出, 超声波

Abstract: The two-step leaching technique was used to extract silver from manganese-containing silver ore. In the first step the ore was leached with a binary ore process to resolve manganese oxide and expose the fresh silver ore, using pyrite as reductant. The manganese leaching reached 98% and the leaching conditions are: leaching temperature 95oC, leaching time 5 h, pyrite: manganese ore=0.28. When the ultrasonic wave at the rate of 40 kHz is applied to the reaction system, the leaching time can be reduced by 50% and the pyrite consumption amount is decreased by nearly 20%. Then, the leaching residue was treated to extract silver and the recovery was 95%.

Key words: continuous casting, mould, vortex, physical modeling

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