CaO-CaCl₂-CaF₂系溶融フラックスの炭酸ガス溶解度

抄録

A Thermogravimetric technique was used to achieve accurate measurements of carbon dioxide dissolution in molten CaO-CaCl₂-CaF₂ fluxes. The effects of temperature as well as composition of flux on carbon dioxide dissolution are studied.
Experiments were conducted at a temperature range from 900 to 1500°C. The solubility in fluxes of X_CaOinit. = 0.12 increased from 0.44 to 0.97wt% as replacing CaCl₂ by CaF₂ at 1100°C and it decreased from 2.95wt% to 0.21wt% with increasing temperature at constant X_CaF2init. of 0.6. Results obtained in this study were compared with those appearing in the literature. Carbonate capacities calculated from the solubility data at 1500°C were compared with sulphide capacities, phosphate capacities, phosphide capacities, nitride capacities and cyanide capacities in CaO-CaF₂ system. Linear relations were observed between carbonate capacities and other capacities on log-log plots.