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刘卓君, 刘欣, 李林艳, 徐盛明, 王学军. 钴白合金的常压浸出工艺研究[J]. 有色金属科学与工程, 2015, 6(1): 24-28, 65. DOI: 10.13264/j.cnki.ysjskx.2015.01.005
引用本文: 刘卓君, 刘欣, 李林艳, 徐盛明, 王学军. 钴白合金的常压浸出工艺研究[J]. 有色金属科学与工程, 2015, 6(1): 24-28, 65. DOI: 10.13264/j.cnki.ysjskx.2015.01.005
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LIU Zhuojun, LIU Xin, LI Linyan, XU Shengming, WANG Xuejun. Atmospheric leaching of Co white alloy[J]. Nonferrous Metals Science and Engineering, 2015, 6(1): 24-28, 65. DOI: 10.13264/j.cnki.ysjskx.2015.01.005
Citation: LIU Zhuojun, LIU Xin, LI Linyan, XU Shengming, WANG Xuejun. Atmospheric leaching of Co white alloy[J]. Nonferrous Metals Science and Engineering, 2015, 6(1): 24-28, 65. DOI: 10.13264/j.cnki.ysjskx.2015.01.005
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钴白合金的常压浸出工艺研究

Atmospheric leaching of Co white alloy

    摘要
  • 摘要: 采用氧化酸浸方法研究了高硅钴白合金的铜钴提取过程, 考查了不同酸浸体系、氧化剂用量、H2SO4/HCl的摩尔比、液固比、浸出温度和浸出时间等因素对铜、钴浸出率的影响.结果表明:以硫酸和盐酸的混合液为浸出剂, 当浸出温度为70 ℃、浸出时间为2 h、n(H2SO4): n(HCl)为8:2、初始酸度为5 mol/L且其过量系数为1.2、以氯酸钠为氧化剂且其过量系数为1.4时, 合金中钴、铁、铜的浸出率均可达99 %以上, 且无氯化亚铜沉淀产生, 无硅胶产生, 浸出浆的过滤性能良好.

     

    Abstract: The oxidative acid leaching process of Co white alloy containing high silicon is studied. The influences of leaching agent, oxidant dosage, molar ratio of H2SO4/HCl, liquid-solid ratio, leaching temperature and time on leaching rate of cobalt and copper are investigated. The results show that more than 99 % of Co, Fe, Cu can be leached under the following conditions: initial acidity 5.0 mol/L, mole ratio of H2SO4/HCl 8:2 as leaching agent, excess coefficient of acidity 1.2, excess coefficient of oxidant (NaClO3) 1.4, leaching temperature 70 ℃ for 2 h. Leaching slurry is easy to be filtrated with no cuprous chloride precipitation and silica gel.

     

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