Method for producing sodium chloride crystals
    1.
    发明授权
    Method for producing sodium chloride crystals 失效
    生产氯化钠晶体的方法

    公开(公告)号:US06692720B1

    公开(公告)日:2004-02-17

    申请号:US09763638

    申请日:2001-08-27

    IPC分类号: C01D316

    CPC分类号: C01D3/16 B01D53/68 C01F11/46

    摘要: Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolated, the resulting aqueous solution (36) is subjected to evaporation to crystallize sodium chloride (40), which is collected, and the aqueous mother liquor (41) from the crystallization of the sodium chloride is subjected to cooling (42) to crystallize glaserite (45).

    摘要翻译: 由氯化钾和硫酸根离子污染的氯化钠盐水生产氯化钠晶体的方法,根据该方法,将钙化合物(32)加入到盐水(48)中以结晶分离的芒硝(35), 使得到的水溶液(36)蒸发以结晶收集的氯化钠(40),并将来自氯化钠结晶的母液(41)冷却(42)以结晶闪石(45) 。

    Method for making an aqueous sodium chloride solution
    2.
    发明授权
    Method for making an aqueous sodium chloride solution 有权
    制备氯化钠水溶液的方法

    公开(公告)号:US06645458B1

    公开(公告)日:2003-11-11

    申请号:US09830454

    申请日:2001-07-25

    申请人: Cédric Humblot

    发明人: Cédric Humblot

    IPC分类号: C01D300

    摘要: Process for the manufacture of an aqueous sodium chloride solution, according to which a solid material comprising sodium chloride and heavy metals is dispersed in water, the aqueous medium thus obtained is alkalinized so as to precipitate the heavy metals in the form of metal hydroxides, calcium carbonate is coprecipitated with the metal hydroxides in the aqueous medium and the aqueous medium is then subjected to mechanical clarification.

    摘要翻译: 用于制造氯化钠水溶液的方法,根据该方法将包含氯化钠和重金属的固体材料分散在水中,将由此获得的水性介质碱化以使金属氢氧化物,钙的形式的重金属沉淀 碳酸盐与水性介质中的金属氢氧化物共沉淀,然后将水性介质进行机械澄清。