Potash Processing with Mechanical Vapor Recompression
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United States of America Patent
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Issued Date -
Feb 12, 2015
app pub date -
Aug 12, 2013
filing date -
Aug 12, 2013
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Abandoned
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Abstract
A potash-extraction system and method for extracting potash from a brine containing potash without the use of water-consuming evaporation ponds or additional chemicals is disclosed. The potash processing system uses a mechanical-vapor recompression (“MVR”) cycle to separate salt and then potash from a sylvinite brine containing salt and potash. In embodiments, the latent heat recovered from condensing vapor may be used to boil the brine to precipitate some salt and remove some water (in the form of water vapor) from the brine. The remaining potash-concentrated brine may then be cooled to precipitate potash from the solution. The precipitated potash may then be further processed for final use.
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