高强度调浆对微细粒磷灰石浮选效果的影响研究

为了提高微细粒磷灰石的浮选指标，需要对入浮矿浆进行高强度调浆处理。本文以承德某地的斜板浓密溢流为研究对象，展开高强度调浆工艺条件试验。以实验室30L规格的高强度调浆机和工业上2m直径的高强度调浆机为研究手段，对调浆时间、调浆转速等展开条件试验。30L调浆机结果表明最佳的浮选时间为6分钟，最佳的线速度为8.35m/s，和普通改质机叶轮和直桨叶轮相比，新型叶轮的调浆效果更好，并且能耗较低。2m高强度调浆机的工业试验表明，150rpm是最佳的转速。并且和普通调浆机相比，在相同产率（粗选产率为5%~10%）下磷灰石的回收率提高了约10%，可见高强度调浆机能显著改善细粒磷灰石的浮选环境。清水条件高速摄像和浊度测试结果表明，高强度调浆机叶轮和普通搅拌槽叶轮相比，对油滴的分散效果更显著，搅拌后形成的乳浊液体系更为稳定。

Influence of high-intensity conditioning on fine-grained apatite flotation performance

It is necessary to carry out high-intensity conditioning pretreatment to improve fine-grained apatite flotation index. In this paper, the overflow of the inclined plate thickener in Chengde is taken as the research object, and high-intensity conditioning process test is carried out. Using the laboratory 30L high-intensity conditioner and the industrial type with 2m diameter as the research methods, the conditions such as the conditioning time and the speed of rotor are carried out. The results of the 30L test show that the best flotation time is 6 minutes, and the best linear speed is 8.35m/s. Compared with the ordinary reformer impeller and the straight blade impeller, the new impeller has better conditioning effect with low energy consumption. The industrial test of 2m high-intensity conditioner shows that 150 rpm is the best speed of this equipment. And compared with the ordinary conditioner, the apatite recovery increased by about 10% under the same yield (roughing yield is 5%~10%), and it can be seen that the high-intensity conditioner can significantly improve the fine-grained apatite flotation environment. The high-speed photographing and turbidity test results under clean water conditions show that the impeller of the high-intensity conditioner has a more significant dispersion effect on oil droplets than the impeller of the ordinary conditioner, and the emulsion system formed after HIC conditioning is more stable.