Effect of air profiling and frother concentration on a flotation bank performance

Miguel Maldonado, Ignacio Ramos, Alonso Pinto, Cesar O Gomez
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Abstract

The impact of air distribution on the metallurgical performance of a flotation bank operating with a mineral slurry having a moderate and high frother concentration is assessed. A flotation bank of two and three 5L Denver cells was implemented, and air flow was distributed down the bank as increasing and decreasing profiles. It was observed that when operating the bank configurations with a moderate frother concentration (10 ppm DF 400) the increasing profile provided the highest Cu enrichment ratio at the expense of a slight reduction in Cu recovery. This increase in selectivity was mainly due to a significant reduction in the water recovery and mass-pull in the first cell. When the bank operated with a high frother concentration, i.e., well beyond the CCC, a significant increase in water recovery was observed, producing a significant loss in selectivity that could not be compensated by air profiling.
空气剖面和浮选剂浓度对浮选槽性能的影响
本研究评估了气流分布对使用具有中等和较高泡沫浓度的矿浆的浮选槽的冶金性能的影响。浮选槽组由两个和三个 5L 丹佛槽组成,气流在槽组中的分布呈递增和递减曲线。观察发现,在中等泡沫浓度(10 ppm DF 400)的浮选槽配置中,递增剖面的铜富集率最高,但铜回收率略有下降。选择性的提高主要是由于第一个单元的水回收率和拉力显著降低。当槽在高泡沫浓度(即远远超过 CCC)下运行时,观察到水回收率显著增加,从而导致选择性显著降低,而这是空气剖面无法弥补的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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