Abstract：Integrated production indicators such as concentrate grade,concentrate output and metal recovery rate,are often difficult to measure online,so they are usually decomposed to corresponding technic indexes according to production experience and technological process. Because technic indexes can't be adjusted in real time according to the actual production,and the best integrated production indices can't be ensured,optimal compensation method for decomposition of integrated production indices was proposed. To solve the lack of Apriori algorithm that setting support artificially can't meet the demand of users,optimal compensation method was proposed for decomposition of integrated production indices in separation of iron ore based on improved Apriori algorithm. It was successfully applied to the beneficiation process of a steel plant. The result showed that the efficiency and accuracy improved obviously.

Keyword：separation of iron ore;decomposition of integrated production indices;compensation;association rule mining;Apriori algorithm;