本文是关于用碱溶液处理含铝矿物溶出氧化铝时,分离不溶于碱液中的赤泥所用药剂的专利。到目前为止,都用淀粉或聚丙烯酸钠作为分离赤泥的助沉剂。然而,淀粉虽能使含赤泥的铝酸钠溶液获得良好的澄清效果,但对提高赤泥的沉降效果不利,而聚丙烯酸钠对赤泥的沉降效果好,却对铝酸钠溶液的澄清效果不 This article is a patent on the use of redox agents that do not dissolve in lye when alkaline aluminum solutions are used to dissolve alumina. So far, starch or sodium polyacrylate have been used as a settling agent for the separation of red mud. However, although the starch can make the sodium aluminate solution containing red mud obtain a good clarifying effect, it is unfavorable for improving the sedimentation effect of the red mud, while the sodium polyacrylate has a good settling effect on the red mud but has a clear effect on the sodium aluminate solution The effect is not