Abstract
Ion-absorbed rare-earth ore is an important mineral resource which is widely extracted by in-situ leaching process. And such process generates a significant amount of impurities such as aluminum and iron ions in leaching solution simultaneously. The surface characteristics and interactions by infrared spectroscopy and X-ray diffraction were studied to optimize the leaching conditions. It is found that the environment-friendly depressant LG-01 can react with the impurity ions through the formation of a new complex on the surface of leaching residues. Thus, it reduces significantly the concentration of impurity ions in leaching solution and improves the leaching rate of rare-earth ore. Moreover, a leaching rate of 95.6% and an impurity removal rate of 92% have been achieved under the optimized conditions.
Original language | English |
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Pages (from-to) | 2986-2990 |
Number of pages | 5 |
Journal | Nonferrous Metals Society of China. Transactions |
Volume | 24 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2014 |
Keywords
- inclusions
- iron ores
- leaching
- metal ions
- rare earth metals