Model for evaluation of the concentration of dissolved phosphorus (relative to the final pH of the leaching solution) during leaching of iron oxide ore in oxalic acid solution has been derived. It was observed that the validity of the model is rooted in the relationship lnP = N/a where both sides of the expression are approximately equal to 4. The model depends on the value of the final pH of the leaching solution which varies with leaching time. In all, the positive or negative deviation of the model-predicted phosphorus concentration from its corresponding value obtained from the experiment was found to be less than 22%, which is quite within the acceptable deviation limit of experimental results hence establishing the validity and precision of the model.
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机译：得出了在草酸溶液中浸出氧化铁矿石过程中溶解的磷浓度（相对于浸出溶液的最终pH）的评估模型。观察到，模型的有效性源于关系lnP = N / a，其中表达式的两边都大约等于4。该模型取决于浸提溶液的最终pH值，该值随浸提时间而变化。总的来说，模型预测的磷浓度与其实验得出的相应值的正偏差或负偏差均小于22％，这完全在实验结果的可接受偏差范围内，从而确定了磷的有效性和准确性。该模型。
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