| 综合利用锂云母分解副产物硫酸钠制备碳酸氢钠的工艺探究 |
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| 引用本文： | 祝宏帅,贾贵斌.综合利用锂云母分解副产物硫酸钠制备碳酸氢钠的工艺探究[J].矿冶工程,2018,38(1):102-103. |
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| 作者姓名： | 祝宏帅 贾贵斌 |
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| 作者单位： | 江西旭锂矿业有限公司,江西 宜春 336000 |
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| 摘 要： | 以硫酸(盐)法处理锂云母生产锂盐过程中的副产品硫酸钠为原料,利用结晶法制备高价值的碳酸氢钠,纯度高达90.77%;采用蒸发-冷却-再蒸发的方法回收副产物硫酸铵,每500 mL卤水可回收118.7 g固体,其中硫酸铵占39.6%。实现了变废为宝以及资源综合利用的目标。
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| 关 键 词： | 锂云母 碳酸锂 硫酸钠 碳酸氢钠 硫酸铵 |
| 收稿时间： | 2017-08-11 |
Preparation of NaHCO3 Using a By-product of Na2SO4 from Decomposition of Lithium Mica |
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| ZHU Hong-shuai,JIA Gui-bin.Preparation of NaHCO3 Using a By-product of Na2SO4 from Decomposition of Lithium Mica[J].Mining and Metallurgical Engineering,2018,38(1):102-103. |
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| Authors: | ZHU Hong-shuai JIA Gui-bin |
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| Affiliation: | Jiangxi Xuli Mining Co Ltd, Yichun 336000, Jiangxi, China |
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| Abstract: | Na2SO4, a by-product in the production process of lithium salt produced from lithium mica by sulfuric acid method, was taken as a raw material to prepare the valuable material of NaHCO3 by crystallization, yielding the product with purity up to 90.77%. The by-product of (NH4)2SO4 was then recovered by the process of evaporation-cooling-re-evaporation. It is found that 118.7 g solid product with 39.6% (NH4)2SO4 can be recovered from 500 mL brine, achieving the goal of comprehensive utilization of resources by turning waste into valuables. |
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| Keywords: | lithium mica lithium carbonate Na2SO4 NaHCO3 (NH4)2SO4 |
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