随着我国科学技术工业的发展,碱在各个工业部门的应用愈来愈广泛,因而在应用上就遇到碱溶液以及碱与其他物质组成的溶液的浓度与其比重的关系问题。例如,在氧化铝生产的工艺过程中,不少指标的控制与自动检测以及物料平衡计算等,都需要应用铝酸钠溶液浓 With the development of science and technology industry in our country, the application of alkali in various industrial sectors is more and more widespread. Therefore, the problem of the relationship between the concentration of alkali solution and the solution of alkali and other substances and their specific gravity has been encountered in the application. For example, in the alumina production process, many indicators of the control and automatic detection and material balance calculation, etc., need to use sodium aluminate solution concentration