含鈦炭陽極直接電解制備低鈦鋁合金

含鈦炭陽極直接電解制備低鈦鋁合金Preparation of low titanium aluminum alloy by direct reduction of TiO2-containing carbon anode

采用含TiO2炭陽極直接熔鹽電解制備低鈦鋁合金。對含TiO2炭陽極在CO2/空氣中的殘余率分別進行測試，用XRD對含鈦瀝青焦進行分析，運用SEM和EDS手段對炭陽極、原鋁和電解鋁的形貌和組成進行表征。結(jié)果表明：TiO2的添加可顯著改善炭陽極在CO2和空氣中的殘余率，當TiO2添加量(質(zhì)量分數(shù))為1%時，炭陽極在CO2中的殘余率由76.3%急劇增加到93.5%，在空氣中的殘余率從51.87%增加到65.92%； TiO2在炭陽極制備過程中其化學成分未發(fā)生變化，含TiO2炭陽極在電解過程中運行穩(wěn)定；隨著炭陽極的消耗，TiO2溶入電解質(zhì)中，可實現(xiàn)低鈦鋁合金的制備。

The low titanium aluminum alloy was prepared by molten salt electrolysis process using TiO2-containing carbon anode. The residual rates of TiO2-containing carbon anode in CO2 and in air atmosphere were tested, respectively, the TiO2-containing pitch cokes were tested by XRD, the morphology and composition of TiO2-containing carbon anode, initial aluminum and after electrolytic aluminum were analyzed by scanning electron microscope (SEM) and energy spectrum (EDS). The results show that the rate of residual of TiO2-containing carbon anode can also be significantly improved with increasing Ti content. When adding amount of TiO2 is 1%, the residual rate in CO2 sharply increases from 76.3% to 93.5%, and the residual rate in air increases from 51.87% to 65.92%. The TiO2 phase is unchanged during the process of preparing carbon anode. The TiO2-containing carbon anode can run stably in the electrolysis process. The TiO2 dissolves into electrolyte when the carbon anode is consumed, and the low titanium aluminum alloy is prepared.

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