前言在拜耳法溶液中的碳酸盐含量一般用石灰苛化来控制。氧化铝生产则采用下述两种工艺之一。第一种工艺最初是由拜耳在大约1900年时研究出的“内部苛化”,即在溶出前,把熟石灰或干石灰添加到铝土矿浆中。苛化既在溶出系统也在赤泥洗涤系统中进行。然而,由于在原 Preface The carbonate content in the Bayer process solution is generally controlled by lime causticization. Alumina production uses one of the two processes described below. The first process was originally “internal causticization” developed by Bayer around 1900, ie adding slaked lime or dry lime to the bauxite slurry prior to dissolution. Causticization is performed both in the dissolution system and in the red mud washing system. However, due to the original