Extended Arc Furnace
A new development in plasma furnace technology in which by relatively simple modifications a more or less conventional arc furnace can be made to produce a long stable plasma flame is described. A very promising application of this technique is in the steel melting as well as in direct reduction of fine iron ore, waste oxides, flotation concentrates, blast furnace dust, fly ash, mill scale, etc.
An analytical approach to plasma torch chemistry
Available thermodynamic and kinetic data were applied to predict quantitatively the over-all results that are obtained when hot hydrogen from the plasma torch is mixed with methane and the mixture is subsequently quenched. The results of the analytical treatment were compared to experimental data and the agreement was very good. A better understanding of the critical variables in this high temperature process was obtained from the analysis.
PLASMA JET CHEMISTRY.
Abstract : Two types of plasma jets were built and used: a dc high intensity plasma jet and a radiofrequency plasma jet. A detailed description of the devices, their operating conditions and characteristics are presented. Detailed descriptions are given of the preparation of several gaseous endothermic compounds with the plasma jet, such as (CN)2, HCN, acetylene, and the oxides of N. Various methods of preparation of these compounds are reported. The use of the plasma jet as a reducing device for oxides was tested with Al2O3. Although the investigations were not completed, the results of the first experiments are included.