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| Effect of Complexation Extraction of Rare Earth Concentrates on Silicon Leaching |
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Received:March 28, 2017
Revised:April 01, 2017
Accepted:April 05, 2017
Published Online:August 21, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.09.011 |
| KeyWord:rare earth concentrates; lixivium; cryolite; silicon; leaching |
| Author | Institution |
| zhang xiao wei |
内蒙古科技大学 |
| li mei |
内蒙古科技大学 |
| hu jia li |
内蒙古科技大学 |
| liu zhao gang |
内蒙古科技大学 |
| wang mi tang |
内蒙古科技大学 |
| hu yan hong |
内蒙古科技大学 |
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| Abstract: |
| Effects of reaction conditions on leaching of silicon in cryolite synthesized from leaching waste solution of complexation extraction of rare earth concentrates were investigated. The results show that silicon leaching rate is 35% above under the optimum conditions including hydrochloric acid concentration of 4 mol/L, aluminum chloride concentration of 1.5 mol/L, reaction time of 120 min, L/S=30︰1, stirring speed of 300 r/min, and temperature of 85 ℃. Silicon in cryolite really enters into solution during complexation extraction of rare earth concentrates. |
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