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利用一种改良的浮选柱,选择性地分离泡沫带脱落下来的颗粒,并在给料和泡沫带之间采用了二次冲洗水系统,文中对浮选结果做了总结。报道了金、铜、铅-锌和萤石矿的浮选结果。和常规浮选柱相比,分离从泡沫中脱下的物料得到“第三产品”以及二次冲洗水的应用改善了精矿品位。当这种改进的浮选柱被用于“粗选闪速”浮选或铜矿石精选时,可得到铜品位33～40%、铜回收率33%的铜精矿。尾矿浮选中金的回收率达到15%,金品位高于160g/t。在铅-锌矿浮选的精选段,两种硫化矿的回收率都达到92～94%,品位达到80～82%,高于常规浮选柱的70%。对萤石矿的浮选速率高,回收率达到94%,品位为96%CaF_2。由于改进了质量转移的条件,改良浮选柱优于常规浮选柱。最后报道了对槽子设计参数有影响的数据,讨论了这种浮选柱在工业应用中的潜力。
A modified flotation column was used to selectively separate particles from the foam strip and a secondary flushing water system was used between the feedstock and the foam strip. The results of the flotation were summarized. Reported the flotation results of gold, copper and lead-zinc and fluorite ore. The separation of the material removed from the foam to give a “third product” and the use of secondary flushing water improves the concentrate grade as compared to a conventional flotation column. When the improved flotation column is used for the “rough flash” flotation or copper ore selection, copper concentrate with 33-40% copper grade and 33% copper recovery can be obtained. Tailings flotation gold recovery rate of 15%, gold grade higher than 160g / t. In the flotation section of lead-zinc flotation, the recoveries of both sulphide ores ranged from 92 to 94% with grades from 80 to 82% higher than 70% of conventional flotation columns. Fluorite ore flotation rate, the recovery rate of 94%, grade of 96% CaF_2. Improved flotation columns outperform conventional flotation columns due to improved mass transfer conditions. Finally, data on the design parameters of the trough were reported and the potential of this flotation column for industrial applications was discussed.