Based on the practices and improvement of A-type flotator in aeration rate control by inns of pulp cycling, a new PF-type flotator and its sortal products are designed and put into production.

经过多年的浮选实践，对A型浮选机进行了改造，发现用矿浆回流的方法可以有效地控制浮选机的充气量。在此基础上设计出PF型浮选机，并已向系列化产品迈进。

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