4.The key technology of alumina production in Bayer method is on line composition detection, especially on line composition analysis of aluminous ore and motherliquor.
7.By analyzing the method of removing transformation gas(CO2) in synthesis ammonia production,we put forward a optimum economization energy method that the motherliquor Ⅱ absorbed CO2 directly.
8.The article introduces the relation of current with electric pressure, desalted rate with flow and the measurement method of limit current in the process MSG motherliquor desalted with electrodialysis.
9.In Bayer process, the raw ore slurry burdening control system detects main compositions in ore and motherliquor in time, then the computer calculates optimum liquid solid ratio on burdening mathematical model to realize the optimum production burdening.
10.The research indicated that,the 36°Bè xylose motherliquor was used as material,9.60% catalyst M-16 was added,and after caramelized 180min at 120℃,a caramel of color index of 28,000 EBC units,and the red index above 6.3 was gotten.