| Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences | Host |
| Citation: |
FENG Zhangbiao, YANG Hualing, WANG Changfu. Recovery of Rubidium from a Tungsten Tailings Containing High Calcite by Reverse−positive Flotation Process[J]. Conservation and Utilization of Mineral Resources, 2024, 44(1): 89-94. doi: 10.13779/j.cnki.issn1001-0076.2024.01.012
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Recovery of Rubidium from a Tungsten Tailings Containing High Calcite by Reverse−positive Flotation Process
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Abstract
A tungsten tailings contains 0.098% rubidium, and the gangue minerals are mainly quartz, garnet, fluorite, and calcite. Rubidium is mainly present in muscovite, biotite, and potassium feldspar, and its distribution relationship with the gangue minerals is extremely complex, belonging to the associated high calcium low grade rubidium ore. In order to determine the rubidium recovery process, a reverse flotation decalcification rubidium flotation principle process was adopted. Detailed experiments were conducted on the collector, inhibitor, and selection process of reverse flotation decalcification coarse selection, as well as conditions such as rubidium flotation coarse selection activator, pulp pH, dodecylamine, and selected sodium hexametaphosphate. The results determined that a collector CYP+inhibitor SN−1 reagent system was used for reverse flotation decalcification, and a sulfuric acid+dodecylamine reagent system was used for rubidium positive flotation. Finally, through the closed circuit process of reverse flotation decalcification (two coarse and three fine) − fluorine−free low acid rubidium flotation (one coarse and one sweep and one fine), the Rb2O grade of rubidium concentrate was 0.214%, and the Rb2O recovery rate was 71.04%, effectively achieving the recovery of rubidium resources
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References
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FENG Zhangbiao, YANG Hualing, WANG Changfu. Recovery of Rubidium from a Tungsten Tailings Containing High Calcite by Reverse−positive Flotation Process[J]. Conservation and Utilization of Mineral Resources, 2024, 44(1): 89-94. doi: 10.13779/j.cnki.issn1001-0076.2024.01.012
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Figure 1.
Principle flowsheet of rubidium flotation
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Figure 2.
Closed circuit test flowsheet of reverse flotation decalcification
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Figure 3.
Flosheet of rubidium rough flotation
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Figure 4.
Effect of pH value on rubidium rough flotation
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Figure 5.
Effect of dodecylamine dosage on rubidium rough flotation results
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Figure 6.
Effect of sodium hexametaphosphate dosage on rubidium cleaning flotation
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Figure 7.
Effect of cleaning times on rubidium cleaning results
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Figure 8.
Reverse flotation decalcification − fluorine−free and low acid rubidium full process closed circuit flotation process flow