公开(公告)号：US3966537A

公开(公告)日：1976-06-29

申请号：US511724

申请日：1974-10-03

申请人： Chosei Sato ,  Yasutoku Yamada ,  Yoshiyuki Takenaka

发明人： Chosei Sato ,  Yasutoku Yamada ,  Yoshiyuki Takenaka

IPC分类号： B01D1/14 ,  C01F7/06 ,  B01D1/28 ,  B01D35/18

CPC分类号： C01F7/06 ,  B01D1/14 ,  C01F7/066 ,  Y02P20/129 ,  Y02P20/57 ,  Y02P70/34 ,  Y10S159/25

摘要： In the manufacture of alumina by the Bayer process, a method comprising the steps of bringing the overflow from a multistage red mud thickener into counterflow contact with the steam generated in consequence of the flashing of bauxite-dissolved slurry so as to effect exchange of heat therebetween, separating and removing sand from the slurry by regulating the rate at which the slurry is discharged from the bottom of the column, and circulating the heated overflow and using it as the wash water in the former stage of the said thickener, all the said operations performed in one and the same column; and a device provided with inlet and outlet pipes for the overflow, an overflow type condenser, inlet and outlet pipes for the slurry, and a pipe for the removal of sand so as to effect the operations of the said method wholly in one and the same column.

摘要翻译： 在通过拜尔法制造氧化铝的方法中，包括以下步骤：使来自多级红泥增稠器的溢流物与由于铝土矿溶解的浆料闪烁而产生的蒸汽逆流接触，从而实现其间的热交换 通过调节浆料从塔底部排出的速度，并将加热的溢流循环并在上述增稠器的前一阶段将其用作洗涤水来分离和除去砂浆，所有这些操作 在同一列执行; 以及设置有用于溢流的入口和出口管的装置，溢流式冷凝器，用于浆料的入口和出口管，以及用于去除砂子的管道，以便完全在同一方面完成所述方法的操作 柱。