|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||Numerical and Experimental Study of Carbothermal Reduction of Silica in a Laboratory Thermal Plasma Reactor
||Yudong Li, Ramana Reddy
|On-Site Speaker (Planned)
Experimental and numerical investigations were carried out on carbothermal reduction of SiO2 using a laboratory thermal plasma reactor. Experiments were conducted at different power input (5kW to 20kW) and different gas flow rate (3SCFM to 6SCFM) with SiO2 feed rate of 4 g/min, molar ratio of SiO2 to methane at 1:2. Samples from different sections of the reactor were collected and characterized using SEM and XRD. Temperature profile and gas flow distribution in the thermal plasma reactor were developed by the computational fluid dynamics (CFD) with ANSYS Fluent. The predicted temperatures are in good agreement with the experimentally measured temperatures in the reactor. Based on the analysis of experimental and numerical results, a mechanism of thermal plasma synthesis of Si from SiO2 is developed.