氧化铝生产领域的研究人员对预先脱除含铝原料中有害杂质(如二氧化硅、硫、碳酸盐和有机物)问题越来越重视,对低质原料提出了各种富集方法,其中一些方法已做了工业和半工业性试验。多年来,乌拉尔工学院铝土矿试验室一直在系统地进行着铝土矿用低苛性比铝酸钠溶液脱硅的研究。根据研究结果制定了铝土矿脱硅和铝酸钠溶液净化除掉有机杂质的工艺流 Researchers in the field of alumina production have paid increasing attention to the problem of prior removal of harmful impurities (such as silica, sulfur, carbonates and organics) from aluminum-containing feedstocks and have proposed various enrichment methods for low quality feedstocks, among which Some methods have been tested industrially and semi-industrially. For many years, the Ural Institute of Bauxite Laboratory has been systematically conducting desilication of bauxite with low caustic to sodium aluminate solution. According to the results of the study developed bauxite desilication and sodium aluminate purification process to remove organic impurities