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本文介绍一种半工业性充气式水力旋流器的结构和研制情况以及利用此种设备精选590微米(-28目),灰分为24％,硫分为1.6％的粉煤所得到的初步结果。分选原理已在另外一篇文章中讨论过。充气式水力旋流器的工作原理,是使疏水性颗粒在流体所产生的离心力场内浮选。152毫米(6英寸)充气式水力旋流器的额定处理能力为0.9吨/时,试验结果说明该设备的分选效果比水介质旋流器优越得多。此外,与普通的浮选机相比,分选效率也相近。例如,典型的结果说明,精煤灰分为15％时,产率为75％,尾煤产品灰分约为50％。鉴于试验所获得的结果以及充气式水力旋流器所具有的高处理能力(就浮选时间而言,一般浮选过程为2分钟,而充气式水力旋流器只需2秒钟),因此可以说在选煤工艺上,而且在一般粉煤浮选方面都是一个重大的突破。
This paper presents the structure and development of a semi-industrial aerated hydrocyclone and the preliminary results of using pulverized coal of 590 micron (-28 mesh), ash content of 24% and sulfur content of 1.6% result. Sorting principle has been discussed in another article. The working principle of an inflatable hydrocyclone is to cause hydrophobic particles to float within the centrifugal force field generated by the fluid. The rated capacity of the 152 mm (6 inch) inflatable hydrocyclone is 0.9 tonne per hour. The test results show that the equipment is much better than the hydrocyclone. In addition, compared with the ordinary flotation machine, sorting efficiency is also similar. For example, typical results show that 75% yield is achieved with 15% ash and about 50% ash is used as the tailings product. In view of the experimental results and the high processing capacity of inflatable hydrocyclones (typically 2 minutes for flotation versus 2 seconds for an inflatable hydrocyclone) Can be said that in the coal preparation process, but also in the general aspects of pulverized coal flotation is a major breakthrough.