一、绪言以铝土矿生产氧化铝时,用碱液溶出氧化铝后的残渣,谓之赤泥。赤泥处理从未有过有效的方法,尚存在着许多未解决的问题。为此,作者研究了处理赤泥的新方法。二、铝土矿的湿法磁化还原 1.湿法磁化 1) 碱液中的磁化还原为避免用沉降槽进行固液分离的困难,不仅做了铝土矿磁化还原,同时还做了从溶出液中磁化分离赤泥的实验。使用的是东南亚产的铝土矿,其风干试样成分列于表1。 2) 采用镍触媒的实验 First, the introduction to bauxite production of alumina, with lye residue after the dissolution of alumina, that the red mud. Red mud has never been an effective treatment, there are still many unsolved problems. To this end, the authors studied a new method of treating red mud. Second, the wet magnetization reduction of bauxite 1. Wet Magnetization 1) magnetization reduction in lye In order to avoid the difficulty of solid-liquid separation with a settling tank, not only did magnetization reduction of bauxite, but also made from dissolution Experimental study on separation of red mud by magnetization in liquid. Using bauxite produced in Southeast Asia, the air-dried sample components are listed in Table 1. 2) experiments using nickel catalyst