| As new and advanced materials,titanium and titanium alloys possess many good properties,such as low density,high specific strength,nonmagnetic,good corrosion and heat resistance,and hence have been widely applied over 70 years of industrialization.With the progress of titanium processing technology,sponge titatium has developed rapidly in China and its application field has been expanded gradually in recent years.However,there is still a great gap between China and developed countries,e.g.Japan,USA,Russia,regarding the joint production of magnesium and titanium.Without the joint production in most Chinese sponge titatium companies,a great waste of magnesium and chlorine is caused,and severe environmental pollution is generated due to the hydrolysis of magnesium chloride.Therefore,it is an inevitable trend to develop the joint production of magnesium and titanium for sponge titatium industry.With the development of production technology for magnesium electrolysis,the cell type of electrolytic tank has experienced from diaphragm,diaphragmless to multi-polar.Since its successful development in 1980s,the multi-polar magnesium electrolysis has becoming a leading technology because of its advantages in chlorine concentration,DC power consumption,current efficiency,safety and environmental protection.Based on the application conditions of several types of electrolytic tank for the joint production of magnesium and titanium,the designed specifications of different tanks was compared and analyzed in this study.The technical principle and advancement of multi-polar electrolysis was clarified,and the main influencing factors on its technical economy norms were generalized.Taking a magnesium electrolysis project of Fushun Titanium Co.,Ltd.as an example,an overall economic analysis on the multi-polar electrolysis for the joint production of magnesium and titanium was conducted to shed some light on the future development of magnesium electrolysis technology. |
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