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| Study on Recovery of Alumina in Two Stage Organic Caustic Process |
| Received:May 23, 2018 Revised:June 02, 2018 |
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| DOI：doi：10.3969/j.issn.1007-7545.2018.09.008 |
| KeyWord:organics; causticizing; leaching; alumina |
| Author | Institution |
| FANG Hui |
龙口东海氧化铝有限公司 |
| ZHAO Yu |
龙口东海氧化铝有限公司 |
| ZHAO Yong-qi |
龙口东海氧化铝有限公司 |
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| Abstract: |
| Principle of two stage organic caustic method was introduced. Alumina was recovered from two-stage organic caustic slag by leaching with sodium carbonate. Effects of sodium carbonate concentration, leaching temperature, leaching time, and ratio of liquid to solid (L/S) on alumina recovery rate were investigated. The results show that alumina recovery rate is 90% above under the optimum conditions including concentration of sodium carbonate of 90 g/L, reaction temperature of 100 ℃, reaction time of 80 min, and L/S of 10. |
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