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首页> 外文会议>XXI International Mineral Processing Congress >THE USE OF AN EJECTOR-AERATED BAFFLED COLUMN FOR FINELY DISSEMINATED SULFIDE ORE FLOTATION
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THE USE OF AN EJECTOR-AERATED BAFFLED COLUMN FOR FINELY DISSEMINATED SULFIDE ORE FLOTATION

机译：射流曝气的折流柱在精细弥散的硫化矿浮选中的应用

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摘要

This paper outlines metallurgical results of tests undertaken by using a micropilot scale prototype of an ejector-aerated, bidimensional baffled column for the flotation of a finely disseminated, low-grade gold-bearing pyrite ore. This is now documented with a two-stage, grinding-flotation (pneumomechanical cells) flow sheet. Entrained air holdup was pursued as a function of four independent operating parameters, according to a 2~4 factorial design scheme used for the test planning. Air holdup values up to 49% were secured under a bubbly flowing pattern under stable froth column conditions. The multiple linear regression equation of the air holdup on the running parameters was computed for the design and for optimization of the aerator. The slope angle of the baffle plate and effects of the wash water on the metallurgical results were also studied. Based on the distribution of the mineral values into different product grain-size fractions (concentrates, middlings and tailings), it can be concluded that this system particularly favors the finer fractions' flotation, thus it is suited for the flotation of finely disseminated ores.
机译：本文概述了通过使用喷射器充气的二维折流板的微型试点原型进行浮选的，细分散的，低品位的含金黄铁矿的浮选试验的冶金结果。现在已通过两阶段的研磨浮选（气浮机械）流程图进行了记录。根据用于测试计划的2〜4阶乘设计方案，追求夹带空气滞留率是四个独立运行参数的函数。在稳定的泡沫塔条件下，以气泡流动的方式确保了高达49％的空气滞留率。为了设计和优化曝气机，计算了运行参数上的空气滞留率的多元线性回归方程。还研究了挡板的倾斜角以及洗涤水对冶金结果的影响。根据矿物价值在不同产品粒度级分（精矿，中矿和尾矿）中的分布，可以得出结论，该系统特别有利于较细级分的浮选，因此适用于细分散矿石的浮选。

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