公开(公告)号：US4335082A

公开(公告)日：1982-06-15

申请号：US201722

申请日：1980-10-29

申请人： Jozsef Matyasi ,  Ferenc Toth ,  Laszlo Revesz ,  Benjaminne Toth ,  Miklos Schlegel ,  Jozsef Zoldi ,  Janosne Losonczi ,  Lajos Szoke ,  Maria Orban nee Kelemen

发明人： Jozsef Matyasi ,  Ferenc Toth ,  Laszlo Revesz ,  Benjaminne Toth ,  Miklos Schlegel ,  Jozsef Zoldi ,  Janosne Losonczi ,  Lajos Szoke ,  Maria Orban nee Kelemen

IPC分类号： C01F7/47 ,  C01F7/06 ,  C01F7/46

CPC分类号： C01F7/473

摘要： The invention relates to a new method of reducing the organic substance content of alum earth production cycle performed according to the Bayer technology. By the method of the invention the majority of the organic substances present in the circulating lye can be removed easily and with only slight losses in sodium content.According to the invention one proceeds so that soda present in the hydrate wash and/or in the soda salt solution is caustified with lime, the solution is evaporated to reach a total sodium oxide concentration of 200 to 400 g/l, the precipitated solid is separated and removed from the system, and the liquid is recycled.

摘要翻译： 本发明涉及一种降低根据拜耳技术进行的矾土生产循环有机物含量的新方法。 通过本发明的方法，存在于循环碱液中的大部分有机物质可以容易地除去，并且仅钠含量的轻微损失。 根据本发明，进行水合物洗涤和/或苏打盐溶液中存在的苏打碱用石灰去除，蒸发溶液达到200-400g / l的总氧化钠浓度，沉淀的固体为 从系统中分离并除去，液体被回收。