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| Effect of impurities on the equilibrium concentration of sodium oxalate in bayer sodium aluminate solution |
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Received:November 28, 2019
Revised:December 01, 2019
Accepted:December 02, 2019
Published Online:December 24, 2019
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| DOI： |
| KeyWord:sodium aluminate solution; Sodium oxalate; Impurities; Equilibrium concentration |
| Author | Institution |
| Yang Guili |
Zhengzhou Non-ferrous metals Research Institute CO. Ltd of CHALCO |
| Zheng Jie |
Zhengzhou Non-ferrous metals Research Institute CO. Ltd of CHALCO |
| Lu Peiqian |
Zhengzhou Non-ferrous metals Research Institute CO. Ltd of CHALCO |
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| Abstract: |
| Through the experimental study on the influence of the main impurities in sodium aluminate solution on the equilibrium concentration of sodium oxalate, the results show that: with the increase of the concentration of sodium carbonate, sodium sulfate, sodium chloride and sodium acetate, the equilibrium concentration of sodium oxalate in solution decreases, which is conducive to promoting the crystallization of sodium oxalate. Sodium formate had little effect on the equilibrium concentration of sodium oxalate. When the concentration of collector in the positive flotation of bauxite in solution is higher than 5mg/L, the equilibrium solubility of sodium oxalate increases significantly with the increase of collector concentration in the solution, thus inhibiting the crystallization of sodium oxalate. |
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