Study on Foam Performance of Novel Cationic and Anionic Combined Collector in the Flotation of Lepidolite
The foam performance in mineral flotation process directly affects the flotation index and product processing.A new type of high-efficiency lepidolite collector DDA+SY independently developed in the laboratory was introduced into the flo-tation of lepidolite,the effect of adding DDA+SY on foam performance and flotation behavior was systematically studied by comparing with the common cationic and anionic collector(DDA+NaOL).The results showed that under the neutral pulp con-dition(pH=6.9),when the reagent ratio is 1∶1,the foam performance of DDA+SY was the best and significantly better than that of DDA+NaOL,which was consistent with the flotation test results.The results of surface tension analysis showed that,compared with DDA+NaOL,DDA+SY had a more significant effect on reducing the surface tension of the solution,it was more conducive to reducing the average diameter of the bubble SOTER and improving the foam collision probability,and also could effectively reduce the pressure difference between the inside and outside of the liquid foam and improve the foam stability.The study has reference and guiding significance for the research and development of high-efficiency combined collector of lepidolite and the improvement of foam problem in the flotation process of lepidolite.
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