Research Of Preparing Ti By Mixing TiO Into TiO₂ Cathode In The FFC Process

As a silver metal,Titanium have superior performance,such as small density, high strength, strong corrosion resistance and fatigue resistance,which has been widely used in the shipbuilding industry, industrial, aerospace, medical and other fields.In hence,titanium become of the most development structure and function materials at present.The traditional preparation of titanium is Koll process,but which was limited by complex process, long production cycle and unable to product continuously.Since2000, a large number of researchers studied the preparation method of Ti and triggered a research upsurge.The electrolytic reduction of TiO₂?FFC method? was considered to be the most promising method.This research based on FFC process,electrolyzed the cathode piece mixed with different proportions of TiO and investigated the variation of TiO₂ cathode microstructure and electrolytic products by sintering at low temperature.Article found the most appropriate electrolysis conditions by analyzed the influence on electrolytic efficiency with different cathode structure and studied how TiO influence on the form of CaTiO₃ after explored the ways of forming CaTiO₃.With different amount of the TiO was mixed,the conductivity,specific surface area, porosity and microstructure was detected,and the best proportion of doping TiO was analyzed by researching the electrolytic reduction degree through doping TiO.The main contents of this disquisition are summarized as following:Appropriate sintering temperature is the key to this experiment,the TiO must be sintered at lower temperature to prevent being oxidized.This research explored the different sintering temperature on the influence of the cathode and determined the oxidized temperature of TiO is about 400?.The sintering temperature would influence on the cathode particle.With the increase of temperature,particle polymerization apparently and conductivity increased gradually,which are beneficial to the electronic transmission.Contrast the electrical conductivity of the cathode and combine with the oxidized temperature of TiO,this article select 300? as the best sintering temperature.For the cathode is of low intensity after sintered at 300?,there must be increase a carrier to support them.Three different cathode carrier?self-made copper basket,molybdenum basket, titanium basket? on the impact of electrolytic products was analyzed,studying founds that the self-made copper basket have stronger ability totransmit electron and have slighter hindering effect on the ion migration.As a result,the self-made copper basket was selected as the cathode carrier.This research analyzed the way of forming CaTiO₃ are mainly comes from the hydrolysis of CaCl2 and the effect of temperature and elect.The forming CaTiO₃ have larger particles and lumpy structure,which made the surface of TiO₂ pellet become pyknotic and O2- was transmitted difficult when migration out of the cathode.As a result,the form of CaTiO₃ hindered the entire electrolysis process.When mixed with TiO,it would combine with CaTiO₃ and forming CaTi2O4,which could shorten the process of the electrochemical reduction and alleviate the blocking effect of CaTiO₃.According to the analyze of conductivity,specific surface area, porosity and microstructure of the cathode after mixed with different amount of TiO,the specific surface area would decrease with the TiO admixing amount add for joining with TiO₂ into larger particles.This studying founds that through enhance the conductivity of the cathode, shorten the electrolytic process and reduce the blocking effect of CaTiO₃,the mixing of TiO are beneficial to the electrolysis.This studying founds that through enhance the conductivity of the cathode, shorten the electrolytic process and reduce the blocking effect of CaTiO₃,the mixing of TiO are beneficial to the electrolysis.However,the specific surface area decrease with the TiO add in,which would slow down the transmission rate of O2-.Based on the analysis of the above parts,there is a optimal mixing amount of TiO to improve the reduction rate.This experiment proved that when the TiO add to approximately 9%,the electrolysis efficiency is best.