公开(公告)号：US3989513A

公开(公告)日：1976-11-02

申请号：US557341

申请日：1975-03-11

申请人： Gyorgy Dobos ,  Zoltan Felfoldi ,  Gyula Horvath ,  Gyorgy Kaptay ,  Zoltan Osvald ,  Karoly Solymar

发明人： Gyorgy Dobos ,  Zoltan Felfoldi ,  Gyula Horvath ,  Gyorgy Kaptay ,  Zoltan Osvald ,  Karoly Solymar

IPC分类号： C01F7/06 ,  C01F7/38 ,  C21B3/02 ,  C21B11/00 ,  C22B7/04 ,  C21B5/04

CPC分类号： C22B7/04 ,  C01F7/066 ,  C01F7/38 ,  C21B11/00 ,  C21B3/02 ,  Y02P10/212 ,  Y10S75/958

摘要： Disclosed is a method for the treatment of the red mud byproduct of the Bayer aluminum process, wherein limestone, hydrated lime or other CaO-containing material is added to the red mud in certain molar proportions to the ingredients of the red mud, then the mixture is further mixed with a reducing agent, and the entire mixture is subjected to a reducing heat treatment during the course of which the mix becomes softened or molten. The iron and the slag are separated from each other while the mix is still molten, or after it has been cooled, and then the Na and Al-content of the slag is extracted with a sodium carbonate solution containing a caustic, or with a sodium carbonate solution and a solution of a caustic in two steps.

摘要翻译： 本发明公开了一种处理拜耳铝工艺的红泥副产物的方法，其中将灰泥，熟石灰或其它含CaO材料以红色泥浆的成分以一定摩尔比例加入到红泥中，然后混合 进一步与还原剂混合，并且在混合物变软或熔融的过程中对整个混合物进行还原热处理。 铁和渣彼此分离，同时混合物仍然熔化或冷却后，然后用含有苛性碱的碳酸钠溶液或钠溶液萃取炉渣的Na和Al含量 碳酸盐溶液和苛性碱溶液两步。