公开(公告)号：US4762684A

公开(公告)日：1988-08-09

申请号：US3046

申请日：1987-01-13

申请人： Eric Chantriaux ,  Henri Grobelny ,  Yves Perret

发明人： Eric Chantriaux ,  Henri Grobelny ,  Yves Perret

IPC分类号： C01F7/14 ,  B01F13/02

CPC分类号： C01F7/144 ,  C01F7/147 ,  C01P2004/50 ,  C01P2004/61

摘要： A method and apparatus for decomposing a sodium aluminate liquor supersaturated with alumina, obtained from alkaline action on bauxite by the Bayer process, is initiated by introduction of alumina trihydrate seed, thereby forming a suspension. The suspension is fed in at the top of a non-agitated reactor described as a "decomposer", and removed from the bottom of the decomposer; the speed at which the suspension moves downwardly is regulated at 1.5 to 10 meters per hour. The apparatus comprises a cylindrical-conical reactor which is fitted with an arrangement for feeding in the suspension at the top, and with an arrangement for taking out the suspension at the bottom. In one embodiment of the apparatus the suspension is taken from the base of the decomposer through an internal tube, with air injected into the bottom of it, is raised to the level of the top of the decomposer and is then sent downstream.

摘要翻译： 通过引入三水合氧化铝种子来引发用于通过拜耳法从碱性作用对铝土矿进行分解的用氧化铝过饱和的铝酸钠液体的方法和装置，从而形成悬浮液。 悬浮液在称为“分解器”的非搅拌反应器的顶部进料，并从分解器的底部除去; 悬架向下移动的速度调节为每小时1.5至10米。 该装置包括圆柱形锥形反应器，该反应器装配有用于供给悬挂在顶部的装置，并具有用于在底部取出悬架的装置。 在装置的一个实施例中，悬浮液通过内管从分解器的底部取出，其中注入空气的底部的空气被升高到分解器的顶部的水平面，然后被送到下游。

公开(公告)号：US4666687A

公开(公告)日：1987-05-19

申请号：US831269

申请日：1986-02-20

申请人： Eric Chantriaux ,  Henri Gobelny ,  Yves Perret

发明人： Eric Chantriaux ,  Henri Gobelny ,  Yves Perret

IPC分类号： C01F7/14 ,  C01F7/06

CPC分类号： C01F7/144 ,  C01F7/147 ,  C01P2004/50 ,  C01P2004/61

摘要： The invention concerns a method and apparatus for decomposing a sodium aluminate liquor supersaturated with alumina, obtained from alkaline action on bauxite by the Bayer process, decomposition being initiated by introduction of alumina trihydrate seed to trigger the decomposition, thereby forming a suspension. In this process the suspension is fed in at the top of a non-agitated reactor described as a "decomposer", and removed from the bottom of the decomposer; the speed at which the suspension moves downwardly is regulated at 1.5 to 10 meters per hour. The apparatus comprises a cylindrical-conical reactor which is fitted with an arrangement for feeding in the suspension at the top, and with an arrangement for taking out the suspension at the bottom. In one embodiment of the apparatus the suspension is taken from the base of the decomposer through an internal tube, with air injected into the bottom of it, is raised to the level of the top of the decomposer and is then sent downstream.

摘要翻译： 本发明涉及一种用于通过拜耳方法分解铝氧化铝过饱和的铝酸盐液体，其由铝土矿碱性作用分解，通过引入三水合氧化铝种子引发分解，从而形成悬浮液。 在该方法中，将悬浮液在称为“分解器”的非搅拌反应器的顶部进料，并从分解器的底部除去; 悬架向下移动的速度调节为每小时1.5至10米。 该装置包括圆柱形锥形反应器，该反应器装配有用于供给悬挂在顶部的装置，并具有用于在底部取出悬架的装置。 在装置的一个实施例中，悬浮液通过内管从分解器的底部取出，其中注入空气的底部的空气被升高到分解器的顶部的水平面，然后被送到下游。