The Process to Recover Soda Ash from Mining Solution in a Pilot Plant

Abstract:

The process to recover soda ash from mining solution is combined CO₂ stripping with falling film evaporation, and the stripping operation is the key step in the process, the processing installations include a CO₂ stripping tower, falling film evaporators and other accessories. The stripping and combined operation(linking CO₂ stripping with falling film evaporation) are implemented to examine tower operational conditions and ascertain how to efficiently concentrate mining solution, respectively. As a result, after the better design scheme(17-meter height packing) is evidently proposed and the process design is also favorably optimized, such as diminishing equipment sizes in a following industrial scale. Besides, the work also analyzes the solubility of Na₂CO₃ and NaHCO₃ in H₂O and discusses its probable equilibrium in the operation.

• Periodical: Advanced Materials Research (Volume 322)
• Pages: 224-229
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.322.224
• Online since: August 2011
• Authors: Juan Ru Huang, Chang Chun Xu, Yong Li Sun, Zhen Yan Cao, Ji Gang Wang, Ke Jian Yang
• Keywords: Concentrated Solution, Decomposition Liquor, Falling Film Evaporator, Pilot Plant, Stripping Tower

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