Application of In-Flight Melting Technology by RF Induction Thermal Plasmas to Glass Production

摘要

An innovative in-flight glass melting technology with induced thermal plasmas wasdeveloped for the purpose of energy conservation and environmental protection.Two-dimensionalmodeling was used to simulate the thermofluid fields in the plasma torch.The in-flight meltingbehavior of glass raw material was investigated by various analysis methods.Results showedthat the plasma temperature was up to 10000 K with a maximum velocity over 30 m/s,whichmade it possible to melt the granulated glass raw material within milliseconds.The carbonatesin the raw material decomposed completely and the compounds in the raw material attainted100% vitrification during the in-flight time from the nozzle exit to substrate.The particle meltingprocess is similar to the unreacted-core shrinking model.