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首页> 外文会议>Annual Meeting Exhibition of The Minerals, Metals Materials Society >Effect of Sodium Alkali Concentration on Calcification-Carbonization Process
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Effect of Sodium Alkali Concentration on Calcification-Carbonization Process

机译：碱浓度对钙化碳化过程的影响

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The calcification-carbonization method is a recently developed hydrometallurgical treatment process which can effectively realize the scale of Bayer process residue for aluminium and sodium recovery. In order to reduce the water consumption in the process, and increase extraction efficiency of the low alkali concentration solution generated in the process, the effects of varying alkali concentration of the calcification reaction solution and the alkali concentration of the carbonization reaction solution on the calcification carbonization process were investigated. The experimental results showed that at low alkali concentration (Na_2O < 50 g/L), the solution had no significant effect on the calcification-carbonization process, as Al_2O_3 recovery rate fluctuates between 34-37%. As the alkali concentration of the solution increases (Na_2O > 50 g/L), the Al_2O_3 recovery rate decreases to less than 20%.
机译：钙化 - 碳化法是最近开发的液压冶金处理过程，可以有效地实现铝和钠恢复的拜耳工艺残留物的规模。为了降低过程中的水消耗，并提高过程中产生的低碱浓度溶液的提取效率，改变钙化反应溶液的碱浓度和碳化反应溶液的碱浓度对钙化碳化的影响研究了进程。实验结果表明，在低碱浓度（Na_2O <50g / L），溶液对钙化碳化过程没有显着影响，因为Al_2O_3回收率波动在34-37％之间。随着溶液的碱浓度增加（Na_2O> 50g / L），Al_2O_3回收率降低至小于20％。

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