论文部分内容阅读
本文对一种外置式接触充气器进行研究 ,并评估它在细粒选矿中的效率。为此 ,需要一台带有外部直通接触充气器的浮选柱。接触器被安装在矿浆循环流动管路上 ,它由一根微孔不锈钢钢管构成 ,钢管周围用不漏气的硬外罩密封。这个装置既是气泡生成器 ,又是气泡 -矿粒相互作用室。研究该装置所涉及的变量有接触器长度、孔的尺寸、捕收管长度、装置安装的位置、浮选柱长度和矿浆流速 (指在微孔管内 )。同时 ,使用布伦克曼 (Brinkmann)粒度分析仪测定结果画出各粒级颗粒的回收率曲线。试验结果表明 ,矿浆速率在细粒浮选回收率起重要作用。而其他参数如捕收管长度、微孔管长度及孔的尺寸 ,也都在不同程度上对细粒浮选回收率起着作用。由此可以得出的结论是 ,对于宽粒级物料的回收率来说 ,传统的内置起泡方式与外置接触方式相结合是最理想的。
This article studies an external contact inflator and assesses its efficiency in fine-grained beneficiation. To do this, a flotation column with an external straight-through contact inflator is needed. Contactor is installed in the slurry circulation flow line, which consists of a porous stainless steel pipe, steel pipe sealed with airtight hard cover. This device is both a bubble generator and a bubble-mine interaction chamber. Variables involved in this device are contactor length, hole size, trap length, device installation location, flotation column length, and slurry flow rate (within the microporous tube). At the same time, the recovery curve of each particle size was plotted using Brinkmann particle size analyzer. The experimental results show that the pulp rate plays an important role in the flotation recovery. Other parameters, such as trapping tube length, microporous tube length and pore size, also play different roles in flotation recovery. From this it can be concluded that for the recovery of wide-range materials, the traditional built-in foaming mode is most suitable for the external contact mode.