2007•Precious MetalsRequires access
Study on Leaching of Silver Chloride in Sodium Sulfite Solution Containing Chloride Ions
Zuojuan Du
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Abstract
The influences of pH value,concentrations of sodium sulfite and chloride ion on leaching of silver chloride by sodium sulfite were studied based on coordination equilibrium.The results show that sulfite ion increases with pH value and concentration of sodium sulfite,which results in the increase of solubility of silver chloride.In the circular leaching solution,the solubility of silver chloride becomes lower with the increase of concentration of chloride ion.In industrial production,the solution can circularly leach silver chloride 11 times when the concentration of sodium sulfite is 2mol/L and the concentration of silver ion is 30g/L after every leaching process.