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采用浮选柱浮选试验的因子设计来了解浮选柱参数的主效应和交互效应。试验中空气流速、冲洗水流速和泡沫深度在两种范围内变化。结果分析表明,提高空气流速对精矿品位有不利影响,增加泡沫高度可提高精矿品位。空气流速和冲洗水之间以及空气流速和泡沫高度之间的交互效应对精矿品位有显著影响。结果表明,原矿品位12.76%P_2O_5的矿石经一段浮选柱浮选可得到P_2O_531%(SiO_210.6%)的精矿,回收率为94%。这样,减少了采用常规浮选槽浮选所需的精选段数。
Factor design of flotation column flotation was used to understand the main effect and interaction effect of flotation column parameters. The air flow rate, rinse water flow rate and foam depth in the experiment varied in two ranges. Analysis of the results shows that increasing the air velocity has an adverse effect on the grade of the concentrate and increasing the height of the foam improves the concentrate grade. The interaction between air flow rate and rinse water, and between air flow rate and foam height has a significant effect on concentrate grade. The results showed that the concentrate with the grade of 12.76% P 2 O 5 at the ore grade of P 2 O 5 53% (SiO 2 10.6%) was recovered by a flotation column with a recovery of 94%. In this way, the number of refinements required for conventional flotation cell flotation is reduced.