Abstract
The sulphuric acid-calcium hydroxide-water system similar to those which occur in batch neutralization processes in industry, has been studied. The rate of precipitation of calcium sulphate dihydrate during batch neutralization of sulphuric acid solutions with lime, in the temperature range of 10 to 60°C and acid concentrations from 0.03M to 0.125M, was studied. On the basis of the theoretical correlation between the individual parameters and the experimental data, a mathematical-statistical model has been developed. With the aid of this model it is possible to observe and predict changes in the supersaturation/concentration of calcium sulphate with time.
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