CuO Solubility in Alkali-Chloride Melts

摘要

Used method of isothermal saturation solubility of copper (Ⅱ) oxide in alkali and alkaline-salt melts has been investigated at temperature range 673 - 873 K. It has been determined that the solubility of CuO in the order of melts LiOH < NaOH < KOH are increased. The effect of temperature on the CuO solubility in alkali melts are described of the equation of the straight line In C = A + B/L, where C is concentration (mole fraction) of the CuO in the melts, and A and B are constants. The salt additions of lithium chloride, sodium chloride and potassium chloride to sodium hydroxide melt decreased the solubility of copper (Ⅱ) oxide.