| The solubility of silver in molten CaO-B₂O₃ slag at high temperature was measured to understand the dissolution behaviors of silver into the slags as a fundamental study on the measure of basicity. The B₂O₃ bearing fluxes, which have wide range of liquid at the temperature of interest would be shown the effects of flux composition on the solubility of silver as an indicator of basicity through the whole range of liquid. The solubility of silver in slag has a minimum value as a function of flux composition. and it is suggested that a silver behaves as an amphoteric substance, i.e, it shows a different stability in slag of the different basicity. The solubility of silver decreases with increasing temperature. It was also decreased with the content of basic oxide in the acidic region, and vice versa in the basic region. From the view point of the Ag solubility as a measure of basicity, the relationship between depolimerization of borate network and basicity was discussed by introducing the relative basicity. The relationship between the solubility of silver and nitride capacity as well as theoretical optical basicity was also discussed. |
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