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单词 causticization
释义
causticization

Chemical Engineering
  • A process used for converting a solution of soda (sodium carbonate) with lime (calcium hydroxide) into sodium hydroxide and calcium carbonate as:

    Na2CO3+Ca(OH)22NaOH+CaCO3

    The process operates at around 90ºC with an excess of lime and the precipitated calcium carbonate separated. Developed in the nineteenth century, the process was used after the Leblanc process and before the Castner–Kellner process.


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