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Growth Kinetics of Barium Sulphate in Suspension |
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| Authors: | Dr J Hostomský Dr J Rathouský Jr Prof Dr J Skřivánek |
| Institution: | Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, and Department of Chemical Engineering, Institute of Chemical Technology, Prague, Czechoslovakia
J. Hostomský, Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences 16000 Prague 6 J. Rathouský, Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences 16000 Prague 6 J. Skřivánek, Department of Chemical Engineering, Institute of Chemical Technology 16628 Prague 6, Czechoslovakia |
| Abstract: | The growth rate of barium sulphate seed crystals from stirred solutions was studied conductometrically at 25°C by a stopped-flow technique. The supersaturation ranged from 3 × 10−7 to 3 × 10−8 mol BaSO4/cm3. The seed crystals were grown in the system during the initial (steady-state) period of the experiment. Crystal size distributions were determined by optical microscopy. The growth rate of barium sulphate under the conditions of the experiments can be expressed by a quadratic function of supersaturation. The results, which suggest an interface rate-controlling mechanism, are discussed with respect to published data. |
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