Floatation Extraction of Thinly-Emulsified Tributyl Phosphate Stabilized by Silicic Acid

摘要

We have studied regularities of floatation extraction of fine-emulsion tributyl phosphate stabilized by silicic acid. Most completely the floatation process occurs at pH 5-6. At the concentration of silicic acid 500-550 mg/dm~3 the degree of floatation extraction of tributyl phosphate (a) reaches 70% (floatation time of tributyl phosphate is 10 min). In the presence of HNO_3 (1-5 mol/dm~3) the value a passes through the maximum at C_(HNO_3) = 3 mol/dm~3. A conclusion was made about an important role in the studied floatation process of not only electrical, but also structural-mechanical properties of the surface of the air drops and bubbles.