Abstract
In this study, the calciothermic reduction of TiO2 was investigated with using the H2 and CaCl2. The reagent grade of TiO2 powder, Ca granular and CaCl2 anhydrous powder were used, and the ratio of Ca/CaCl2 were varied. The calciothermic reduction was performed under isothermal condition at 1173 K with different reaction time. After reduction, the characteristics of Ti powder were analyzed with XRD and SEM-EDS. Also, the residual oxygen content was analyzed with oxygen determinator. It was found that the use of hydrogen did not affect the decrease of residual oxygen in titanium, while the use of calcium chloride resulted in a further reduction of residual oxygen. The lowest residual oxygen content was 0.2453 wt.%[O] under the following conditions: 1173 K, the molar ratio of Ca:TiO2=4:1, 90.5 mol%CaCl2-Ca, 600 sccm of H2 with 1 h of reaction time.
Original language | English |
---|---|
State | Published - 2020 |
Event | 15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019 - Pyeongchang, Gangwon-do, Korea, Republic of Duration: 13 Oct 2019 → 17 Oct 2019 |
Conference
Conference | 15th International Symposium on East Asian Resources Recycling Technology, EARTH 2019 |
---|---|
Country/Territory | Korea, Republic of |
City | Pyeongchang, Gangwon-do |
Period | 13/10/19 → 17/10/19 |
Keywords
- Calciothermic reduction
- Calcium chloride
- Hydrogen
- Titanium dioxide
- Titanium powder