公开(公告)号：US4353753A

公开(公告)日：1982-10-12

申请号：US212636

申请日：1980-12-03

申请人： Zoltan Osvald ,  Gergely Veres ,  Gyula Odor ,  Gyorgy Lang ,  Janos Steiner

发明人： Zoltan Osvald ,  Gergely Veres ,  Gyula Odor ,  Gyorgy Lang ,  Janos Steiner

IPC分类号： F28G9/00 ,  B08B3/10

CPC分类号： F28G9/00

摘要： The invention relates to plant operations for increasing the cycle times of heat exchangers by the digestion of the aluminium oxide content of a slurry according to the Bayer technology, said slurry consisting of bauxite and sodium aluminate liquor, using an equipment in which the material is heated stepwise and in more parallel material streams, then the material streams are combined and further heated, or combined and kept at the same temperature, or after combination further heated and kept at the same temperature, characterized in that a part of the parallel material streams is slurry, another part of same is aqueous sodium hydroxide solution, preferably sodium aluminate liquor containing sodium hydroxide, or water, and the parallel material streams are exchanged in the heat exchangers in a cyclical manner.

摘要翻译： 本发明涉及通过根据拜耳技术消除浆料的氧化铝含量来增加热交换器的循环时间的设备操作，所述浆料由铝土矿和铝酸钠液体组成，使用其中材料被加热的设备 然后在更平行的材料流中，将物料流组合并进一步加热或组合并保持在相同的温度，或者在进一步加热并保持在相同温度下的组合之后，其特征在于，一部分平行材料流是 浆料的另一部分是氢氧化钠水溶液，优选含有氢氧化钠的铝酸钠溶液或水，并且平行材料流以循环方式在热交换器中交换。

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。